Lime is a key soil fixing in the kitchen cultivate in light of the fact that it influences the ripeness of the dirt in a few ways. Lime is itself a wellspring of calcium, a fundamental significant component for solid plant development, and is likewise imperative to the creation of a decent soil structure.
THE EFFECTS OF LIME The nearness of lime administers the causticity of the dirt: the more lime present, the less acidic the dirt. This influences the microorganisms that separate natural matter, which generally can't get by in a dirt that is extremely acidic. Soil acridity is additionally vital in the take-up of supplements, since some of them, for example, potassium mixes, wind up noticeably inaccessible to plants in soils that are exceptionally corrosive, while others may aggregate to fixations that are lethal to plants . The occurrence of a few illnesses is affected by soil causticity; clubroot in cabbages blossoms with corrosive soils and scab in potatoes on basic ones. Lime has a significant advantageous impact on the structure of mud soils, since its nearness starts a substance procedure that totals soil particles into stable morsels, which are bunches of mineral and natural matter. A decent piece structure is vital both for appropriate air circulation of the dirt and for compelling water and supplement maintenance. The level of lime additionally impacts the living occupants of soil. The action of worms and the microorganisms, particularly microbes, that diminish massive natural matter to a constituent of humus, diminishes as the corrosiveness of the dirt increments.
KNOWING YOUR SOIL pH To pick up the most extreme advantages of lime in soil and maintain a strategic distance from the issues coming about because of its nonattendance or abundance, it is important to see first how to quantify the causticity of the dirt, and second how to alter the level. The level of corrosiveness of a substance is measured on a graduated framework known as the pH scale. At the center of this scale, pH 7 speaks to the unbiased condition: values lower than this, down to pH 0, show expanding corrosiveness, and
values above it, up to pH 14, show expanding alkalinity. Cultivate soils as a rule have a pH of in the vicinity of 4.5 and 7.5, and a large portion of the harvests to be developed in a foods grown from the ground garden will do best on soils of around pH 6.5; this standard stays consistent, and is the level for which you ought to point in treating your dirt; the pH level straightforwardly or by implication influences everything else that you do. There are available and reasonable means for the nursery worker to decide the level of soil causticity and the requirement for lime. Basic pH estimation packs are accessible from great garden focuses and mail-arrange retailers; their outcomes are anything but difficult to peruse and adequately solid. Utilize a unit in the principal phases of arranging, and redress any awkwardness before planting. It is likewise prudent to utilize them for checking each few seasons, as levels will change, and it might be important to make conformities. On an expansive site, take little examples from over the region, then blend them before testing a little amount as a delegate test. Then again, play out a few tests at different focuses.
Extraordinary pH PROBLEMS The acridity of the dirt influences the accessibility of supplements , and adjusting soil causticity by applying lime is a powerful methods for impacting supplement accessibility. Some liming items can likewise be wellsprings of the principle supplements; for instance, ammonium nitrate defined with lime contributes nitrogen, and dolomitic limestone additionally contains magnesium. A dirt with an exorbitantly high lime substance is similarly as unsuitable for foods grown from the ground developing as a dirt with too little. In exceptionally basic conditions, the greater part of the fundamental supplements that are required in just little amounts—follow components, for example, iron, manganese, and copper—can't be promptly consumed by the plant . On excessively limerich soil, apples and pears regularly indicate stamped yellowing (chlorosis) between the leaf veins, because of iron or manganese having turned out to be inaccessible, and comparative chlorosis is found in a few vegetables, for instance, beets.
APPLYING LIME It is substantially less demanding to diminish soil sharpness than to raise it, so take mind in choosing how to apply lime. Three types of lime are for the most part accessible: quicklime, which is burning and perilous; hydrated lime, which is speedier acting however can harm foliage; and pulverized chalk or ground limestone, the slightest unsafe and as a rule the minimum costly type of lime for garden utilize. Rates of utilization to convey an acidic soil to pH 6.5 change as indicated by the current pH esteem as well as to the dirt sort: the science of a mud soil makes it much more impervious to the impacts of liming than a sandy soil. A general manual for application rates is appeared in the table. The pH of extremely acidic soil can be raised as it were
bit by bit, so customary pH checking is required in the early improvement of the garden. Dressing necessities of more than 12oz for each sq yd (400g for every sq m) should be connected more than a few seasons. Whatever the amount, best impacts will be acquired where the application is made well before planting, in a perfect world on at least two events in the fall and winter; this will permit the lime to start changes in the dirt slowly and all the more successfully. Apply lime in the wake of joining creature fertilizers, yet at the very least three or after four weeks, to maintain a strategic distance from compound responses that will discharge alkali and permit nitrogen to get away, and plan to work in the dressing to a profundity of 6in (15cm).
Diminishing ALKALINITY Rainfall, constant development, and trimming will continuously build soil causticity. Use of blooms of sulfur additionally has an impact, yet this is moderate, and reliant on generally warm soil for bacterial movement. For general direction, apply 8oz for each sq yd (270g for every sq m) on dirt soils and a large portion of this amount on sandy soils. Rehash pH testing and application as essential; the procedure is just worth considering in outrageous conditions.
Monday, 3 April 2017
Essential nutrients when growing fruit and vegetables
All products of the soil crops require a consistent satisfactory supply of supplements to manage development and yield a beneficial gather. Great sustenance is guaranteed by consideration at the season of setting up the garden and afterward nonstop upkeep. Soil supplements originate from a few sources—weathering of minerals, the breakdown of natural matter, compound response in the dirt, and assimilation from the environment. The plant specialist can likewise impact supplement levels by applying extra manures and natural matter.
MAJOR AND MINOR NUTRIENTS The basic plant supplements required in the best amount are nitrogen, phosphorus, and potassium. Nitrogen is caught up in amount by plants to advance development; verdant vegetables utilize an incredible arrangement, as do dark currants, plums, and pears among the natural product crops. Phosphorus is important for compound responses inside the plant and is essential for cell division and subsequently the improvement of shoots and roots. Potassium is fundamental in plant digestion, giving toughness, enduring development, illness resistance, and shading and flavor in vegetables and natural product. Magnesium, calcium, and sulfur likewise have basic parts, however are required in littler sums. Magnesium is a constituent of chlorophyll, expected to change over light into vitality for development, and has a part in the vehicle of phosphorus inside plants. Calcium encourages development. Sulfur is a focal constituent of the protein in living cells, and is more often than not hard to find. There are likewise fundamental follow components or micronutrients, required in considerably littler amounts. The most critical of these are press, manganese, copper, molybdenum, boron, chlorine, and zinc.
Deciding NUTRIENT LEVELS Total nonattendance of a supplement from the dirt is uncommon; low supplement levels therefore of draining by precipitation or flooding, or through exhaustion by progressive products after some time are more typical. Another huge reason for lack is saves in the dirt getting to be plainly inaccessible due to
the impacts of sharpness over the top measures of another supplement, or poor root development therefore of water logging (see confronting page) or infection. Measuring levels of supplements, for example, nitrogen, phosphorus, and potassium in a garden soil is difficult—particularly nitrogen due to its versatility. Exclusive units are accessible, at the same time, for exactness, lab testing and expert investigation are ideal; this is definitely less clear, and costly. When beginning testing of the kitchen cultivate soil has occurred, yearly testing from there on is a bit much, gave the dirt is all around kept up.
LEVELS OF THE MAJOR NUTRIENTS Nitrogen is utilized as a part of amount and is likewise very inclined to washing out in rain. Make customary supplementary dressings, yet keep away from extreme sums, which can prompt rank development and unfruitfulness; and furthermore prompt the contamination of water courses. Take after bearings on exclusive composts. Phosphorus is held great, and adequate levels are available in many soils, a special case being old, touched fields changed over to plant. Supplements are most likely required just every a few years in a very much looked after garden. Potassium is generally held in mud soils by a compound response, yet is effectively lost to filtering on sandy, free-depleting, and
acidic soils. Dressings of potassium are required yearly in the kitchen cultivate; it ought to dependably be incorporated into dressings that are connected preceding planting, so as to adjust the impacts of nitrogen.
LEVELS OF MICRONUTRIENTS Because plant development requires low levels of micronutrients, genuine inadequacy indications are once in a while observed. The impacts of deficiencies most every now and again happen on antacid soils , particularly light soils influenced by dry season. Plants on such soils as often as possible show side effects of iron inadequacy, for example, serious yellowing of the developing tips, with the develop leaves likewise yellowed aside from around the little veins. Regularly found in natural product edits, this is known as lime-incited chlorosis. Manganese lack additionally happens on soluble soils, bringing on yellowing of the more seasoned leaves, beginning at the edges; on corrosive soils, levels of manganese dangerous to plants can happen. Boron lack may emerge on light soils after substantial liming and is regularly found in empty stems in brassicas; zinc insufficiency can happen in comparable conditions, hindering shoots and clears out. Molybdenum can be made inaccessible on corrosive soils, bringing about harmed developing focuses and whiptail in cauliflowers, in which the leaf edge does not create. Controlling the pH of the dirt will keep these issues
MAJOR AND MINOR NUTRIENTS The basic plant supplements required in the best amount are nitrogen, phosphorus, and potassium. Nitrogen is caught up in amount by plants to advance development; verdant vegetables utilize an incredible arrangement, as do dark currants, plums, and pears among the natural product crops. Phosphorus is important for compound responses inside the plant and is essential for cell division and subsequently the improvement of shoots and roots. Potassium is fundamental in plant digestion, giving toughness, enduring development, illness resistance, and shading and flavor in vegetables and natural product. Magnesium, calcium, and sulfur likewise have basic parts, however are required in littler sums. Magnesium is a constituent of chlorophyll, expected to change over light into vitality for development, and has a part in the vehicle of phosphorus inside plants. Calcium encourages development. Sulfur is a focal constituent of the protein in living cells, and is more often than not hard to find. There are likewise fundamental follow components or micronutrients, required in considerably littler amounts. The most critical of these are press, manganese, copper, molybdenum, boron, chlorine, and zinc.
Deciding NUTRIENT LEVELS Total nonattendance of a supplement from the dirt is uncommon; low supplement levels therefore of draining by precipitation or flooding, or through exhaustion by progressive products after some time are more typical. Another huge reason for lack is saves in the dirt getting to be plainly inaccessible due to
the impacts of sharpness over the top measures of another supplement, or poor root development therefore of water logging (see confronting page) or infection. Measuring levels of supplements, for example, nitrogen, phosphorus, and potassium in a garden soil is difficult—particularly nitrogen due to its versatility. Exclusive units are accessible, at the same time, for exactness, lab testing and expert investigation are ideal; this is definitely less clear, and costly. When beginning testing of the kitchen cultivate soil has occurred, yearly testing from there on is a bit much, gave the dirt is all around kept up.
LEVELS OF THE MAJOR NUTRIENTS Nitrogen is utilized as a part of amount and is likewise very inclined to washing out in rain. Make customary supplementary dressings, yet keep away from extreme sums, which can prompt rank development and unfruitfulness; and furthermore prompt the contamination of water courses. Take after bearings on exclusive composts. Phosphorus is held great, and adequate levels are available in many soils, a special case being old, touched fields changed over to plant. Supplements are most likely required just every a few years in a very much looked after garden. Potassium is generally held in mud soils by a compound response, yet is effectively lost to filtering on sandy, free-depleting, and
acidic soils. Dressings of potassium are required yearly in the kitchen cultivate; it ought to dependably be incorporated into dressings that are connected preceding planting, so as to adjust the impacts of nitrogen.
LEVELS OF MICRONUTRIENTS Because plant development requires low levels of micronutrients, genuine inadequacy indications are once in a while observed. The impacts of deficiencies most every now and again happen on antacid soils , particularly light soils influenced by dry season. Plants on such soils as often as possible show side effects of iron inadequacy, for example, serious yellowing of the developing tips, with the develop leaves likewise yellowed aside from around the little veins. Regularly found in natural product edits, this is known as lime-incited chlorosis. Manganese lack additionally happens on soluble soils, bringing on yellowing of the more seasoned leaves, beginning at the edges; on corrosive soils, levels of manganese dangerous to plants can happen. Boron lack may emerge on light soils after substantial liming and is regularly found in empty stems in brassicas; zinc insufficiency can happen in comparable conditions, hindering shoots and clears out. Molybdenum can be made inaccessible on corrosive soils, bringing about harmed developing focuses and whiptail in cauliflowers, in which the leaf edge does not create. Controlling the pH of the dirt will keep these issues
Soil: Structure and Soil Types
Similarly as we can't modify elements, for example, climatic conditions and perspective, so we need to acknowledge the dirt that accompanies a garden plot. You might be sufficiently blessed to have a garden site with soil normally very appropriate for creating astounding products, or one that has been made so through a background marked by watchful development; the perfect soil would be a rich, all around depleted topsoil 18in (45cm) profound. Frequently, in any case, we need to battle with cool, overwhelming, inadequately depleted dirt soil or light, sandy soil inclined to quick drying and loss of fruitfulness. Fortunately, these not as much as perfect soils can quite often be enhanced; even where this is impossible, in any event some foods grown from the ground can be developed in brought beds or up in holders
Soil underpins and supports plants, giving jetty and a wellspring of supplements and water. It is very factor as indicated by area, even between locales in closeness. Soils vary in their physical qualities, their levels of natural matter, and their profundity and condition. All dirts are a blend of weathered shake and decayed plant and creature remains or waste, actually supporting horde life forms, whose lifecycles make the dirt into a living medium. It is natural matter and this dirt fauna that give the surface layers their scope of dark colored shading.
SOIL TEXTURE The normal nursery worker does not have to learn or comprehend soil science top to bottom, yet it is important to be
ready to distinguish the basic sort of the dirt on which a kitchen garden is to be built up. This is on the grounds that the distinctive soil sorts have diverse qualities, which influence plant development and call for various methods for developing and keeping up the site. With a couple of particular inclinations, most products of the soil will become sensibly well on an extensive variety of soils. Soil surface is extensively arranged into five principle sorts: earth, residue, sand, chalk, and peat (see outline beneath left). The term topsoil is generally used to propose richness and a dirt of all around brilliance for developing, as in the suggestion to pick "a great medium topsoil." The term truly needs capability, for there is earth topsoil, sediment topsoil, or sandy soil, contingent upon the fundamental soil sort; mud, residue, and sand depict soil surfaces in view of the extents of differentsized mineral particles found in them. In spite of the fact that the fundamental mineral substance of soil is settled by its inception, the basic nature is influenced by the event of stones or rock and furthermore by the expansion of lime and natural matter
SOIL FERTILITY AND STRUCTURE The natural matter and fauna in the dirt give it both its fruitfulness and its structure; these two are firmly connected. One basic part of a ripe soil is humus. The term is typically taken to allude to the genuine natural substance of soil, yet this is a rearrangements. Humus is an unpredictable blend of intensifies that get from the rot of that natural matter to shape a dull hued, sticky substance. It affects the maintenance and arrival of supplements, the development of good soil structure, and the dirt's capacity to hold water. Likewise basic to soil ripeness are the extensive variety of living creatures that populate it, which we regularly underestimate. These incorporate valuable microorganisms and organisms, and a scope of minuscule worms and bugs, other than the noticeable centipedes, night crawlers, and scarabs. All depend on natural matter, differently consolidated and connected every year in mulches, which they separate into humus.
A dirt must have great structure if plants are to flourish. Soil structure is measured by its inclination to frame morsels of mineral particles and natural matter held together by humus. All around organized soil is anything but difficult to develop and has equally appropriated air spaces. This air circulation permits plant roots to stretch out through the dirt effortlessly and encourages development of water and supplements. It likewise has the impact of warming the dirt thus advancing plant development. Soil structure is affected by the exercises of soil life forms in making humus and by
the levels of natural matter present. Likewise essential are the supplements that the living beings need to shape humus, and lime which is crucial to piece development. Different elements helping the improvement of good soil structure incorporate the activity of ice and rotating wet and dry conditions. Guarantee that the dirt structure is not harmed by being developed in wet conditions or by unnecessary activity over the burrowed surface. Strolling or moving wheeled actualizes over the surface can smaller soil whenever, however
particularly in wet conditions. Air circulation can even be harmed by consistent winter rain. This harm can be decreased by leaving a covering of natural matter at first glance amid winter, which can be dove into keep up soil fruitfulness, or by planting an overwintering green excrement or harvest cover
SOIL PROFILE The even groups that can be seen when delving down into a dirt make up the profile. The most effectively identifiable profile in greenhouses is topsoil, subsoil, and the parent shake material beneath them. Topsoil is the layer of most movement, since this contains natural matter and life forms that live on it. The subsoil is normally paler in shading, and is shaped from weathered shake. The profundity of topsoil and subsoil through which roots can enter has extraordinary significance to the development of plants. It merits burrowing a little test gap on your site to discover the profile. Organic product trees do best where the aggregate profundity of all around depleted, weathered soil is no less than 24in (60cm); sweet fruits in a perfect world need no less than 3ft (90cm). Delicate natural products require a dirt profundity of no less than 18in (45cm), aside from strawberries, which can prevail in a profundity of 15in (38cm), as can vegetable harvests. These are general cutoff points and depend on the achievement of products developed industrially; what is of vital significance is that water can deplete uninhibitedly through any profundity of profile.
Waste OF THE SOIL Roots oblige air to develop and to ingest supplements and water. Waterlogged soil ends up plainly frosty and airless. This counteracts supplement take-up and prompts plant roots getting to be plainly sick or notwithstanding kicking the bucket. There are pieces of information that demonstrate an inadequately depleted garden site. The most clear is confirmation of steady puddling after rain. Others are the nearness of plants that flourish in wet conditions, for example, sedges, surges, or greenery, and poor development of perpetual plants. Poor waste emerges in a few ways. It can happen if the topsoil is barren through poor development or absence of humus: cautious development and dressing with natural matter will enhance structure. The dirt profile may actually incorporate an impenetrable layer known as a dish, which is frequently just 1–2in (2.5–5cm) thick. A skillet can happen in the subsoil therefore of collected minerals, particularly press. On the other hand, there might be a boundary in the subsoil or the topsoil brought on by compaction. Since free waste is so vital,
it is worth burrowing a tight assessment pit on speculate locales to analyze the dirt profile. A characteristic hard skillet is effectively recognized, as is compaction, which is frequently set apart by a dull even band. Profound twofold uncovering will break compacted layers, and a characteristic hard dish can be broken with a pickax. Different issues are
more unmanageable: it might be that the garden lies in an empty of normal waste from encompassing area, or that the territory has an actually high water table. Both of these circumstances would be exceptionally hard to cure, and in such conditions it might be important to develop edits in raised beds
Soil underpins and supports plants, giving jetty and a wellspring of supplements and water. It is very factor as indicated by area, even between locales in closeness. Soils vary in their physical qualities, their levels of natural matter, and their profundity and condition. All dirts are a blend of weathered shake and decayed plant and creature remains or waste, actually supporting horde life forms, whose lifecycles make the dirt into a living medium. It is natural matter and this dirt fauna that give the surface layers their scope of dark colored shading.
SOIL TEXTURE The normal nursery worker does not have to learn or comprehend soil science top to bottom, yet it is important to be
ready to distinguish the basic sort of the dirt on which a kitchen garden is to be built up. This is on the grounds that the distinctive soil sorts have diverse qualities, which influence plant development and call for various methods for developing and keeping up the site. With a couple of particular inclinations, most products of the soil will become sensibly well on an extensive variety of soils. Soil surface is extensively arranged into five principle sorts: earth, residue, sand, chalk, and peat (see outline beneath left). The term topsoil is generally used to propose richness and a dirt of all around brilliance for developing, as in the suggestion to pick "a great medium topsoil." The term truly needs capability, for there is earth topsoil, sediment topsoil, or sandy soil, contingent upon the fundamental soil sort; mud, residue, and sand depict soil surfaces in view of the extents of differentsized mineral particles found in them. In spite of the fact that the fundamental mineral substance of soil is settled by its inception, the basic nature is influenced by the event of stones or rock and furthermore by the expansion of lime and natural matter
SOIL FERTILITY AND STRUCTURE The natural matter and fauna in the dirt give it both its fruitfulness and its structure; these two are firmly connected. One basic part of a ripe soil is humus. The term is typically taken to allude to the genuine natural substance of soil, yet this is a rearrangements. Humus is an unpredictable blend of intensifies that get from the rot of that natural matter to shape a dull hued, sticky substance. It affects the maintenance and arrival of supplements, the development of good soil structure, and the dirt's capacity to hold water. Likewise basic to soil ripeness are the extensive variety of living creatures that populate it, which we regularly underestimate. These incorporate valuable microorganisms and organisms, and a scope of minuscule worms and bugs, other than the noticeable centipedes, night crawlers, and scarabs. All depend on natural matter, differently consolidated and connected every year in mulches, which they separate into humus.
A dirt must have great structure if plants are to flourish. Soil structure is measured by its inclination to frame morsels of mineral particles and natural matter held together by humus. All around organized soil is anything but difficult to develop and has equally appropriated air spaces. This air circulation permits plant roots to stretch out through the dirt effortlessly and encourages development of water and supplements. It likewise has the impact of warming the dirt thus advancing plant development. Soil structure is affected by the exercises of soil life forms in making humus and by
the levels of natural matter present. Likewise essential are the supplements that the living beings need to shape humus, and lime which is crucial to piece development. Different elements helping the improvement of good soil structure incorporate the activity of ice and rotating wet and dry conditions. Guarantee that the dirt structure is not harmed by being developed in wet conditions or by unnecessary activity over the burrowed surface. Strolling or moving wheeled actualizes over the surface can smaller soil whenever, however
particularly in wet conditions. Air circulation can even be harmed by consistent winter rain. This harm can be decreased by leaving a covering of natural matter at first glance amid winter, which can be dove into keep up soil fruitfulness, or by planting an overwintering green excrement or harvest cover
SOIL PROFILE The even groups that can be seen when delving down into a dirt make up the profile. The most effectively identifiable profile in greenhouses is topsoil, subsoil, and the parent shake material beneath them. Topsoil is the layer of most movement, since this contains natural matter and life forms that live on it. The subsoil is normally paler in shading, and is shaped from weathered shake. The profundity of topsoil and subsoil through which roots can enter has extraordinary significance to the development of plants. It merits burrowing a little test gap on your site to discover the profile. Organic product trees do best where the aggregate profundity of all around depleted, weathered soil is no less than 24in (60cm); sweet fruits in a perfect world need no less than 3ft (90cm). Delicate natural products require a dirt profundity of no less than 18in (45cm), aside from strawberries, which can prevail in a profundity of 15in (38cm), as can vegetable harvests. These are general cutoff points and depend on the achievement of products developed industrially; what is of vital significance is that water can deplete uninhibitedly through any profundity of profile.
Waste OF THE SOIL Roots oblige air to develop and to ingest supplements and water. Waterlogged soil ends up plainly frosty and airless. This counteracts supplement take-up and prompts plant roots getting to be plainly sick or notwithstanding kicking the bucket. There are pieces of information that demonstrate an inadequately depleted garden site. The most clear is confirmation of steady puddling after rain. Others are the nearness of plants that flourish in wet conditions, for example, sedges, surges, or greenery, and poor development of perpetual plants. Poor waste emerges in a few ways. It can happen if the topsoil is barren through poor development or absence of humus: cautious development and dressing with natural matter will enhance structure. The dirt profile may actually incorporate an impenetrable layer known as a dish, which is frequently just 1–2in (2.5–5cm) thick. A skillet can happen in the subsoil therefore of collected minerals, particularly press. On the other hand, there might be a boundary in the subsoil or the topsoil brought on by compaction. Since free waste is so vital,
it is worth burrowing a tight assessment pit on speculate locales to analyze the dirt profile. A characteristic hard skillet is effectively recognized, as is compaction, which is frequently set apart by a dull even band. Profound twofold uncovering will break compacted layers, and a characteristic hard dish can be broken with a pickax. Different issues are
more unmanageable: it might be that the garden lies in an empty of normal waste from encompassing area, or that the territory has an actually high water table. Both of these circumstances would be exceptionally hard to cure, and in such conditions it might be important to develop edits in raised beds
Growing Vegetables and Fruit: Location and Climate
For the vast majority of us the decision of where we live is administered by contemplations other than the perfect conditions for cultivating. Much of the time one needs to manage with a testing site, however an incredible arrangement can be accomplished via cautious arranging, innovative outline, and picking appropriate products and cultivars. The attributes of your area are considerably more critical for products of the soil than for fancy plants, on the grounds that the scope of plants is smaller, with less degree for choosing to suit the atmosphere. It is fundamental to comprehend the essential requirements for sound plant development: light, appropriate temperature, water, air, and supplements. Each is affected to differing degrees by the conditions in the zone, which we can't change; yet through regarding, keeping up, or enhancing the physical qualities of a garden inside such limitations, we can even now help address these issues.
THE IMPORTANCE OF LIGHT Direct daylight gives the amount and nature of light expected to boost photosynthesis—the procedure by which plants utilize light to change over water and carbon dioxide into vitality for plant movement. This is essential for sound development, delivering mass in verdant vegetable yields and strong improvement of blooms and organic products. The significance of daylight can be found in the frail, inefficient development of plants that are shaded by structures or supports.
Summer daylight ages the shoots of woody natural product plants, enhancing blooming and ensuing fruiting in the accompanying season. Normal day by day hours of daylight shift from place to put, yet in all regions the objective ought to be to guarantee that any shade to the kitchen garden is kept to a base by staying away from, or expelling wherever conceivable, any trees or different blocks that make shade cover. Stick natural products, brassicas, and lasting vegetables will all endure direct shade where a site is just incompletely in sun. There are a couple of circumstances where it might be important to give brief fake shade. Delayed introduction to solid sun can bring about burn or, all the more regularly, shriveling in recently transplanted crops; this is related essentially with the sun's glow, which is basically of advantage to the nursery worker.
THE EFFECTS OF TEMPERATURE The path in which daylight raises air temperature is completely helpful to the planter. It empowers all phases of plant development, from the sowing of vegetables or bud burst in woody natural product plants through to harvest development. It raises the dirt temperature, advancing seed germination and furthermore upgrading root development. Splendid, warm days increment creepy crawly movement, basic for tasteful fertilization of fruiting yields. Regions that appreciate elevated amounts of daylight and coming about warm air for the most part have a generally long neighborhood developing season. Development begins early and completes late, so trimming might be augmented, particularly in vegetable patio nurseries. The unfavorable impacts of low temperatures are significant. Icy air and soil prompt slower germination, development, and bud burst; ice can destroy. Delicate vegetables, for example, tomatoes or cucurbits, will be decimated, and ice brings the risk of intense harm to the bloom of organic product plants, bringing about loss of the harvest. The limitations on foods grown from the ground developing in regions with a high danger of ice can be decreased by picking hardier yields and cultivars. For example, the brassica gathering of vegetables incorporates exceptionally solid harvests contrasted and the by and large more delicate pea and bean assemble, and among the organic product crops peaches are more delicate than apples. There are lettuces reared to survive winter outside, and generally late-blossoming natural product plant cultivars are less inclined to be harmed by spring ices.
Assurance with glass or plastic is a demonstrated strategy for developing products of the soil in an ice inclined atmosphere and delicate natural products might be supported in the haven of a moderately warm divider . Ice provides a few advantages to plant specialists. It helps in the shattering of hunks on dirt soils and will likewise wreck or lessen overwintering irritations and infections. Cool air collects in hollows, so be aware of the potential impacts of ice takes . Once in a while such supplies of icy air can be evacuated by opening up crevices in hindrances, for example, fences, to permit air current to stream to a lower level. A marginally inclining garden site is in this way more averse to be inclined to ice, gave that the wind stream is not discouraged. Cultivates in beach front ranges are a great deal more averse to be liable to ice, in spite of the fact that this is definitely to the detriment of introduction to the harming impacts of high winds.
LEVELS OF Precipitation is a noteworthy impact on the achievement of products of the soil cultivating. Levels of precipitation crosswise over calm locales are frequently exceedingly factor, because of the impact of topographic components, for example, fields, slopes, or mountains. A slope confronting the overarching wind encounters generally high precipitation, as the rising air cools, bringing on precipitation; the leeward side of the slope is its rain shadow, with
bring down precipitation, as the falling air warms. In territories of low precipitation there is danger of dry spell, the impacts going in seriousness from checked plant development to harvest misfortune. Verdant vegetables, for example, lettuces require an unfaltering supply of water to form into an eatable item, and water is comparatively basic for organic product to swell. Preservation of normal water assets is critical, and nursery workers need to guarantee that the dirt holds dampness well and to diminish surface dissipation by the utilization of mulches . A high-precipitation atmosphere brings its own particular difficulties: the best of these is the probability of waterlogged soil. Great soil waste is imperative for kitchen cultivates anyplace, however it is a prime thought in such territories. Youthful vegetable plants are especially helpless in soaked soils that are icy and airless: development is repressed, and indispensable supplements, for example, lime and nitrogen, may likewise end up plainly exhausted. High precipitation supports a few nuisances and maladies, for example, slugs and snails and damping off (see Plant Issues, pp.246–264). Natural product yields are more inclined to sickness in ranges of high precipitation and high dampness: trees endure shoot, leaf, and organic product diseases, and delicate organic products, for example, strawberries and raspberries, are influenced by natural product delicate decay and show root development confinement. Organic product edit administration in regions accepting more than 39in (100cm) of precipitation in a normal year will be exceptionally
requesting. Concoction fungicides can be successful in controlling illnesses, and if utilized as guided they ought to posture little hazard to nature or the plant specialist, however they can be less viable in high-precipitation territories. Where the nursery worker sensibly wishes to keep fungicide splashing to a base, it winds up plainly basic to debilitate sicknesses by great plant mind. Some foods grown from the ground cultivars with regular imperviousness to illness are likewise accessible, however the general decision will definitely be decreased in a high-precipitation atmosphere.
Elevation AND Introduction Solid winds are overwhelmingly a component of uncovered destinations. Gardens at high elevations will more often than not be more inclined to solid winds, as will waterfront destinations, where salt stores on leaves can be an extra issue. Solid winds can likewise be made where air is piped between structures or regular elements. The most evident impacts of wind are physical harm and loss of solidness; other antagonistic impacts, less promptly clear, incorporate expanded water misfortune and a lessening in the pollinating action of flying bugs. Shield, as very much put windbreaks is vital for the nursery worker to make progress in trimming in these conditions. Luckily, of the considerable number of components of characteristic atmosphere, the impacts of wind can maybe most promptly be altered
There is most likely the arrangement of haven around a foods grown from the ground garden is crucial to fruitful creation. It has been appeared to raise temperatures by up to 5˚F (3˚C), empowering the opening and fertilization of blooms and the maturing of wood and organic product. In any site, regardless of how appropriate the dirt and atmosphere, precisely chose sanctuary will build yields. At times, safe house will be basic for any sort of achievement, and the prior it is set up the better.
THE Impacts OF Wind has both quickly obvious and inconspicuous impacts on yields. The most clear impacts result from high winds. Branches of organic product trees and hedges are broken, and trees on rootstocks that are shallow-establishing can be blown over in storms. There might be bloom harm in springtime, and loss of natural product as harvests achieve development. Physical harm to vegetables is well on the way to be seen in taller products, for example, Brussels grows and fava beans, keeling over. Pea and bean backings might be slackened or pulverized, and high winds can harm or even devastate glass or plastic structures, for example, burrow cloches, used to secure products like strawberries and numerous vegetables. More delicate foliage, for example, that of lettuces, beans, and cucurbits, might be harmed. Close to the ocean, twist frequently additionally conveys harming salt stores. Beside these plainly noticeable impacts of wind, plant tests have demonstrated huge sadness in the development and trimming of leafy foods on open locales. The probably causes are higher water misfortune from plants and lower normal air and soil
temperatures. Winds increment water misfortune from plants, particularly those recently planted out, in light of the fact that air moving over the leaves causes vanishing. This drying moderates development, as plants decrease movement to save dampness. The impact is uplifted amid hot, dry summer months and is irritated by the drying impacts of twist on the dirt surface. On uncovered, level or raised destinations, wind can dissolve light or peaty soils. The pollinating movement of creepy crawlies is probably going to be decreased, and if pesticide showers are utilized, their operation can be a great deal less viable as they are passed over target.
Arranging Cover There is an extensive variety of potential advantages to be picked up from safe house, both in greenery enclosures with some level of existing asylum inside a created urban setting, and in nation gardens, however the favorable circumstances do should be weighed against the conceivable hindrances. Setting up asylum causes monetary cost and physical exertion. There is
regularly a danger of making an ice stash by encasing a zone where extremely icy air can gather. Shield elements can bring about shade and hinder the even dispersion of precipitation. The upgraded temperature moderately still quality of the microclimate (see p.10) may make ideal conditions for plant vermin and illnesses. Where living plants are utilized to set up asylum, they may go after dampness. In any circumstance, remember these contemplations at the arranging stage. Safe house is unmistakably most important in shielding crops from the overarching twist, however there can be harm from icy winds from different bearings, and the best practice is to build up asylum around all sides of the leafy foods plant. A decent windbreak will give 30ft (10m) of security on the leeward side for each 3ft (1m) of stature, so a substantial garden will require some inward windbreaks if the border haven is not to be too high and cause conceivable shading issues.
Avoid solid barriers, which can create turbulent eddies and cause damage on the leeward side. If gusting wind is filtered through a roughly 50 percent penetrable shelter barrier there is little risk of this. Many hedges naturally give this sort of shelter; with artificial barriers, solid parts should be separated by their own width or slightly less.
SHELTER HEDGES Hedges will be the first choice for most gardeners, because they are attractive and have a natural association with fruit and vegetables. They require careful planning to ensure that they do not block sunlight and rainfall, and regular trimming to keep them neat and within bounds. The garden needs to be large enough to allow for an uncropped area at least 6ft (2m) wide along the hedge, due to the moisture and nutrient needs of the hedging plants; in many sites this area can be used as access pathway. Almost any woody ornamental plant can be trained as a hedge and many evergreens are traditionally grown as excellent barriers. However, it is best to choose a deciduous subject for enclosing a kitchen garden, because it is more likely to filter the wind acceptably: native species will do well. A mix of shelter hedges provides a greater range of seasonal interest, and espalier- and cordon-trained apples and pears make attractive shelter barriers within the garden. Fall planting allows trees or shrubs to establish over winter and grow well in
the following spring. Set out plants at 24–36in (60–90cm) spacings, and plan to restrict shelter hedges to a maximum height of 8ft (2.5m). After planting, always add a mulch of rotted manure or compost along the line.
ARTIFICIAL BARRIERS Shelter barriers made from fencing provide instant protection and require less annual maintenance than hedges. They do not encroach, and in many cases can more readily be moved, but initial outlay in cost and effort are generally greater than with planting a hedge, and the effect is less decorative. Artificial shelter screens are suitable for
erection at the exposed boundaries of a garden or as internal dividers, and they should be no more than 6ft (2m) high. Make the fence with strong support posts, spaced at a distance equivalent to the screen height, and always attach the cladding to the windward side of the posts. There are several specially made materials available, such as plastic net, or more durable and expensive plastic strap cladding; black is the least intrusive color. Instant decorative cover can be achieved with post and wire fences planted with blackberries or rambler roses. Permeable wooden lath panels and willow hurdles are also suitable.
THE IMPORTANCE OF LIGHT Direct daylight gives the amount and nature of light expected to boost photosynthesis—the procedure by which plants utilize light to change over water and carbon dioxide into vitality for plant movement. This is essential for sound development, delivering mass in verdant vegetable yields and strong improvement of blooms and organic products. The significance of daylight can be found in the frail, inefficient development of plants that are shaded by structures or supports.
Summer daylight ages the shoots of woody natural product plants, enhancing blooming and ensuing fruiting in the accompanying season. Normal day by day hours of daylight shift from place to put, yet in all regions the objective ought to be to guarantee that any shade to the kitchen garden is kept to a base by staying away from, or expelling wherever conceivable, any trees or different blocks that make shade cover. Stick natural products, brassicas, and lasting vegetables will all endure direct shade where a site is just incompletely in sun. There are a couple of circumstances where it might be important to give brief fake shade. Delayed introduction to solid sun can bring about burn or, all the more regularly, shriveling in recently transplanted crops; this is related essentially with the sun's glow, which is basically of advantage to the nursery worker.
THE EFFECTS OF TEMPERATURE The path in which daylight raises air temperature is completely helpful to the planter. It empowers all phases of plant development, from the sowing of vegetables or bud burst in woody natural product plants through to harvest development. It raises the dirt temperature, advancing seed germination and furthermore upgrading root development. Splendid, warm days increment creepy crawly movement, basic for tasteful fertilization of fruiting yields. Regions that appreciate elevated amounts of daylight and coming about warm air for the most part have a generally long neighborhood developing season. Development begins early and completes late, so trimming might be augmented, particularly in vegetable patio nurseries. The unfavorable impacts of low temperatures are significant. Icy air and soil prompt slower germination, development, and bud burst; ice can destroy. Delicate vegetables, for example, tomatoes or cucurbits, will be decimated, and ice brings the risk of intense harm to the bloom of organic product plants, bringing about loss of the harvest. The limitations on foods grown from the ground developing in regions with a high danger of ice can be decreased by picking hardier yields and cultivars. For example, the brassica gathering of vegetables incorporates exceptionally solid harvests contrasted and the by and large more delicate pea and bean assemble, and among the organic product crops peaches are more delicate than apples. There are lettuces reared to survive winter outside, and generally late-blossoming natural product plant cultivars are less inclined to be harmed by spring ices.
Assurance with glass or plastic is a demonstrated strategy for developing products of the soil in an ice inclined atmosphere and delicate natural products might be supported in the haven of a moderately warm divider . Ice provides a few advantages to plant specialists. It helps in the shattering of hunks on dirt soils and will likewise wreck or lessen overwintering irritations and infections. Cool air collects in hollows, so be aware of the potential impacts of ice takes . Once in a while such supplies of icy air can be evacuated by opening up crevices in hindrances, for example, fences, to permit air current to stream to a lower level. A marginally inclining garden site is in this way more averse to be inclined to ice, gave that the wind stream is not discouraged. Cultivates in beach front ranges are a great deal more averse to be liable to ice, in spite of the fact that this is definitely to the detriment of introduction to the harming impacts of high winds.
LEVELS OF Precipitation is a noteworthy impact on the achievement of products of the soil cultivating. Levels of precipitation crosswise over calm locales are frequently exceedingly factor, because of the impact of topographic components, for example, fields, slopes, or mountains. A slope confronting the overarching wind encounters generally high precipitation, as the rising air cools, bringing on precipitation; the leeward side of the slope is its rain shadow, with
bring down precipitation, as the falling air warms. In territories of low precipitation there is danger of dry spell, the impacts going in seriousness from checked plant development to harvest misfortune. Verdant vegetables, for example, lettuces require an unfaltering supply of water to form into an eatable item, and water is comparatively basic for organic product to swell. Preservation of normal water assets is critical, and nursery workers need to guarantee that the dirt holds dampness well and to diminish surface dissipation by the utilization of mulches . A high-precipitation atmosphere brings its own particular difficulties: the best of these is the probability of waterlogged soil. Great soil waste is imperative for kitchen cultivates anyplace, however it is a prime thought in such territories. Youthful vegetable plants are especially helpless in soaked soils that are icy and airless: development is repressed, and indispensable supplements, for example, lime and nitrogen, may likewise end up plainly exhausted. High precipitation supports a few nuisances and maladies, for example, slugs and snails and damping off (see Plant Issues, pp.246–264). Natural product yields are more inclined to sickness in ranges of high precipitation and high dampness: trees endure shoot, leaf, and organic product diseases, and delicate organic products, for example, strawberries and raspberries, are influenced by natural product delicate decay and show root development confinement. Organic product edit administration in regions accepting more than 39in (100cm) of precipitation in a normal year will be exceptionally
requesting. Concoction fungicides can be successful in controlling illnesses, and if utilized as guided they ought to posture little hazard to nature or the plant specialist, however they can be less viable in high-precipitation territories. Where the nursery worker sensibly wishes to keep fungicide splashing to a base, it winds up plainly basic to debilitate sicknesses by great plant mind. Some foods grown from the ground cultivars with regular imperviousness to illness are likewise accessible, however the general decision will definitely be decreased in a high-precipitation atmosphere.
Elevation AND Introduction Solid winds are overwhelmingly a component of uncovered destinations. Gardens at high elevations will more often than not be more inclined to solid winds, as will waterfront destinations, where salt stores on leaves can be an extra issue. Solid winds can likewise be made where air is piped between structures or regular elements. The most evident impacts of wind are physical harm and loss of solidness; other antagonistic impacts, less promptly clear, incorporate expanded water misfortune and a lessening in the pollinating action of flying bugs. Shield, as very much put windbreaks is vital for the nursery worker to make progress in trimming in these conditions. Luckily, of the considerable number of components of characteristic atmosphere, the impacts of wind can maybe most promptly be altered
There is most likely the arrangement of haven around a foods grown from the ground garden is crucial to fruitful creation. It has been appeared to raise temperatures by up to 5˚F (3˚C), empowering the opening and fertilization of blooms and the maturing of wood and organic product. In any site, regardless of how appropriate the dirt and atmosphere, precisely chose sanctuary will build yields. At times, safe house will be basic for any sort of achievement, and the prior it is set up the better.
THE Impacts OF Wind has both quickly obvious and inconspicuous impacts on yields. The most clear impacts result from high winds. Branches of organic product trees and hedges are broken, and trees on rootstocks that are shallow-establishing can be blown over in storms. There might be bloom harm in springtime, and loss of natural product as harvests achieve development. Physical harm to vegetables is well on the way to be seen in taller products, for example, Brussels grows and fava beans, keeling over. Pea and bean backings might be slackened or pulverized, and high winds can harm or even devastate glass or plastic structures, for example, burrow cloches, used to secure products like strawberries and numerous vegetables. More delicate foliage, for example, that of lettuces, beans, and cucurbits, might be harmed. Close to the ocean, twist frequently additionally conveys harming salt stores. Beside these plainly noticeable impacts of wind, plant tests have demonstrated huge sadness in the development and trimming of leafy foods on open locales. The probably causes are higher water misfortune from plants and lower normal air and soil
temperatures. Winds increment water misfortune from plants, particularly those recently planted out, in light of the fact that air moving over the leaves causes vanishing. This drying moderates development, as plants decrease movement to save dampness. The impact is uplifted amid hot, dry summer months and is irritated by the drying impacts of twist on the dirt surface. On uncovered, level or raised destinations, wind can dissolve light or peaty soils. The pollinating movement of creepy crawlies is probably going to be decreased, and if pesticide showers are utilized, their operation can be a great deal less viable as they are passed over target.
Arranging Cover There is an extensive variety of potential advantages to be picked up from safe house, both in greenery enclosures with some level of existing asylum inside a created urban setting, and in nation gardens, however the favorable circumstances do should be weighed against the conceivable hindrances. Setting up asylum causes monetary cost and physical exertion. There is
regularly a danger of making an ice stash by encasing a zone where extremely icy air can gather. Shield elements can bring about shade and hinder the even dispersion of precipitation. The upgraded temperature moderately still quality of the microclimate (see p.10) may make ideal conditions for plant vermin and illnesses. Where living plants are utilized to set up asylum, they may go after dampness. In any circumstance, remember these contemplations at the arranging stage. Safe house is unmistakably most important in shielding crops from the overarching twist, however there can be harm from icy winds from different bearings, and the best practice is to build up asylum around all sides of the leafy foods plant. A decent windbreak will give 30ft (10m) of security on the leeward side for each 3ft (1m) of stature, so a substantial garden will require some inward windbreaks if the border haven is not to be too high and cause conceivable shading issues.
Avoid solid barriers, which can create turbulent eddies and cause damage on the leeward side. If gusting wind is filtered through a roughly 50 percent penetrable shelter barrier there is little risk of this. Many hedges naturally give this sort of shelter; with artificial barriers, solid parts should be separated by their own width or slightly less.
SHELTER HEDGES Hedges will be the first choice for most gardeners, because they are attractive and have a natural association with fruit and vegetables. They require careful planning to ensure that they do not block sunlight and rainfall, and regular trimming to keep them neat and within bounds. The garden needs to be large enough to allow for an uncropped area at least 6ft (2m) wide along the hedge, due to the moisture and nutrient needs of the hedging plants; in many sites this area can be used as access pathway. Almost any woody ornamental plant can be trained as a hedge and many evergreens are traditionally grown as excellent barriers. However, it is best to choose a deciduous subject for enclosing a kitchen garden, because it is more likely to filter the wind acceptably: native species will do well. A mix of shelter hedges provides a greater range of seasonal interest, and espalier- and cordon-trained apples and pears make attractive shelter barriers within the garden. Fall planting allows trees or shrubs to establish over winter and grow well in
the following spring. Set out plants at 24–36in (60–90cm) spacings, and plan to restrict shelter hedges to a maximum height of 8ft (2.5m). After planting, always add a mulch of rotted manure or compost along the line.
ARTIFICIAL BARRIERS Shelter barriers made from fencing provide instant protection and require less annual maintenance than hedges. They do not encroach, and in many cases can more readily be moved, but initial outlay in cost and effort are generally greater than with planting a hedge, and the effect is less decorative. Artificial shelter screens are suitable for
erection at the exposed boundaries of a garden or as internal dividers, and they should be no more than 6ft (2m) high. Make the fence with strong support posts, spaced at a distance equivalent to the screen height, and always attach the cladding to the windward side of the posts. There are several specially made materials available, such as plastic net, or more durable and expensive plastic strap cladding; black is the least intrusive color. Instant decorative cover can be achieved with post and wire fences planted with blackberries or rambler roses. Permeable wooden lath panels and willow hurdles are also suitable.
Tuesday, 17 March 2015
Monday, 16 March 2015
Backyard composting a guide to recycling
Many people practice the three
Rs of conservation. They recycle aluminum cans,
paper, and glass. They reuse paper as scratch pads and
line garbage pails with plastic grocery bags. Some re-
duce their use of energy and materials through energy
conservation and careful maintenance to make things
last.
Apply the three Rs to yard trimmings and leftover
food, and you have composting—an economical way to
reduce solid waste, reuse organic materials, and recycle
nutrients as a soil conditioner. Composting is about be-
ing good caretakers of our environment.
It’s in the bag
In order to estimate how much you threw out last week,
gather one day’s garbage from your household. Weigh
on a bathroom scale or estimate by comparing to a known
weight, like a 20-pound sack of rice. Multiply by seven,
and you have the amount of garbage produced by your
household each week.
Look at what’s in your garbage.
Any recyclable plastic or aluminum
containers or old newspapers? Take
these to be recycled. See any food
stuff – banana peels, fuzzy leftovers,
coffee grounds – or yard trimmings?
These materials are easy to compost.
When you remove the recyclables, 20
pounds of garbage is often reduced
to as little as 5 pounds.
Imitating nature
Composting is a process by which
organic materials (such as branches,
leaves, and fruits) biologically decom-
pose under controlled conditions.
More simply, compost is the result of humans imi-
tating nature’s disposal system.
When vegetation dies or falls off trees in forests and
fields, insects, worms, and bacteria eat it. They leave
behind small loose particles called humus. Humus binds
soil particles together into larger aggregates, or grains,
that allow water and air to enter the soil more easily.
Humus also contains important nutrients in forms plants
can easily use for healthy growth and reproduction.
Mixed with soil, compost improves the soil’s tilth.
That is, it makes the soil looser, or lighter, which makes
water, oxygen, carbon dioxide, and minerals more avail-
able to plants. Compost improves root penetration and
makes the soil easier to work. Compost conserves water
by helping the soil retain it better.
Because it is made from decomposed organic mate-
rial from many sources, compost contains many of the
nutrients plants require (although not always enough to
sustain intense commercial production). Compost has
even been known to reduce the inci-
dence of certain soil-borne diseases
that have devastating effects on plant
health and productivity, perhaps be-
cause the beneficial soil microbes
added in compost outcompete the
pathogenic organisms.
How it works
A balance of five essential ingredi-
ents is the key to rapid, trouble-free
composting. If you maintain a pile
with the correct balances of moisture,
air, and carbon and nitrogen contents
of the raw materials, then decompos-
ing organisms—insects, worms, bac-
teria, and fungi—will do the rest.
HG-41, continuing the CTAHR General Home Garden Series, was first published as Instant Information Series 21, October, 1996.
Backyard Composting
Recycling a Natural Product
Often, over half of home
wastes are compostable.
HG-41 Backyard Composting CTAHR — Apr. 2002
2
Water is required by all living things, including
decomposers. The compost pile should be moist, but not
too wet. A bad odor may indicate that excess moisture is
inhibiting decomposition.
Oxygen is essential to most decomposers. Oxygen
cannot circulate well if the pile is too tight, too big, or too
wet. If the pile is soaked with water, most decomposers
die and composting is taken over by a few “specialists”
that can live without air. Anaerobic decomposition—de-
tected by its swampy odor—is slow and inefficient.
Carbon is abundant in most organic materials and
is broken down by decomposers to create food-energy.
However, other nutrients are needed for carbon to be
readily eaten. Wood and paper are examples of materi-
als that are high in carbon but may be deficient in other
nutrients and thus slow to decompose.
Nitrogen is required by decomposers in relatively
large quantities. It is a major ingredient in protein, a basic
building block of life. Without sufficient nitrogen in your
compost pile to assist digestion of carbon-rich materi-
als, decomposition goes very slowly. Green leaves and
grass clippings are examples of nitrogen-rich materials.
Decomposing organisms produce heat by their ac-
tivity. This heat in turn energizes them, and the whole
process goes faster. Heat also helps kill disease organ-
isms and weed seeds. The speed of composting varies,
but at some point the center of the pile should feel hot or
very warm to the touch. More mass (a bigger heap), more
water, more air, or more nitrogen may be needed to get
the process going.
A well managed pile can produce compost in about
two or three months.
Getting started
A proper surface is important. Compost is easier to turn
when piled on concrete or another hard surface, but
worms and other beneficial organisms from the soil will
have a harder time reaching the pile. Level ground is
also a good surface.
The dimensions of the pile, as a rule of thumb, should
be at least 3 feet high by 3 ft wide by 3 ft long to maintain
sufficient heat in its interior. If the pile is too large, air
has trouble getting to the center. Maximum recommended
size is 5 ft high by 5 ft wide, with no limit to the length.
The appropriate location for a compost pile is a shady
area protected from wind (to prevent it from drying out).
Protect the pile from heavy rain by covering it with a
plastic sheet, or make it under a roof. Build it where it
can’t be flooded.
Have a protected area to store finished compost if it
isn’t going to be used immediately. Avoid mixing
undecomposed materials with finished compost.
Choose a composting method
Set-ups for a compost pile range from simple to elaborate.
Basic compost heap—Simply pile and mix the com-
post materials on the ground. Cover the pile when it rains
to prevent it from getting too wet or losing nutrients to
leaching. Turn the heap regularly (every week or two).
Building the pile over a layer of scrap plastic pipes drilled
with holes allows for air penetration from below and
reduces the need for turning.
Compost pit—Pits are ideal for composting mate-
rials consisting mostly of food scraps. Dig a hole in the
ground, add the materials, mix with soil in the hole, and
refill the hole with at least 8 inches of soil. Fallow areas
of your garden are good places for compost pits.
Holding units—Bins help to contain the compost
heap, keep it out of sight, and can make it easier to turn.
They can be made of concrete blocks, wire mesh, or
wood (although wood may lead to termite problems). If
the bin is a movable type, it can be lifted from the pile
and placed next to it when it is time for turning; just
shovel the heap back into the empty bin. Old garbage
cans can be used as holding units if they have enough
large holes to allow air to circulate and holes in the bot-
tom to allow water to drain.
Turning units—Some commercial composting
units feature rotating barrels that make mixing the pile
easier and reduce the use of shovels or forks for turning.
Another way to make turning easier is to build two or
three adjacent holding units. The first is filled with the
new pile. When the pile is turned, it is shifted into the
next bin. By the third turning, the pile is usually on its
last month of decomposition.
What to compost
Organisms that decompose organic materials to form
compost depend on a “diet” of carbon and nitrogen.
Fresh, green materials are rich in nitrogen, and so are
animal manures. Just as plants need nitrogen to grow,
decomposers need nitrogen to fuel the decomposition
process. Grass clippings are rich in nitrogen, and wood
chips are a carbon source. The key to making a compost
3
HG-41 Backyard Composting CTAHR — Apr. 2002
pile is to combine nitrogen-rich materials with carbon
sources in the right proportions, with the right amount
of moisture, and adequate aeration.
Building a compost pile
This simple recipe for making a compost pile should
produce ready-to-use compost in a few months.
1. Accumulate enough materials for a pile at least 2 x
2 x 2 ft; or even better, to make a 3-ft cube.
2. Shred or chop the materials to 1–2 inches in size to
expose more surface area for faster decomposition.
3. Start the pile with a 4–6 inch thick base of carbon-
source materials (dead leaves, wood chips, shredded
paper, etc.). Moisten. Add a 2–3 inch layer of nitrogen-
rich materials. Food scraps may make up part of this
layer. Continue to alternate and mix layers of nitrogen-
rich materials with carbon sources, adding water as
needed. The pile should be about 3–4 ft high or, if in a
bin, not more than 4–5 ft high. Close the bin or cover
the pile with a plastic sheet.
4. Inoculate a new pile, if desired, by sprinkling a small
amount of topsoil or compost between layers. Some
composters believe this speeds the process by “seed-
ing” the new pile with decomposing organisms.
5. Monitor moisture content; test by feeling a handful
of compost and squeezing it as you would a sponge. It
should feel moist without yielding more than a few drops
of liquid. If the pile is too wet, turn it to allow air in and
improve drainage. If the pile is too dry, water it and turn it.
6. Periodically check the temperature in the pile’s in-
terior. A compost thermometer is helpful, but you can
estimate the temperature by touch. It should peak be-
tween 120° and 160°F (hot to the touch). When the tem-
perature begins to drop, turn the pile and rotate materi-
als from the outer and top parts of the pile toward the
base and middle; move the more composted middle part
to the outer part of the pile. For easy turning, use a gar-
den fork to shift the compost to a second bin; the mate-
Materials OK to use
Nitrogen-rich materials
Grass clippings
Seaweed and aquatic plants (washed to remove salt)
Fruit and vegetable trimmings
Kitchen scraps like coffee grounds, egg shells, leftover
bread, rice, etc.
Fresh, leafy garden trimmings
Carbon sources
Chipped trees
Twigs, small branches from trees and shrubs (chopped)
Sawdust (from untreated wood)
Stems of fibrous grasses
Palm fronds (chopped or shredded)
Newspaper or white paper (shredded)
Undesireable materials
May contribute pests (weeds, plant diseases)
when inadequately composted
Weedy, persistent plants
Diseased plants
Human health hazard
Dog or cat feces, used kitty litter
May attract flies, rats, animals
Oils
Dairy products
Meat or bones of animals, poultry, fish
Are not biodegradable
Metals, glass
Rubber, plastics
Some examples of compost enclosures
HG-41 Backyard Composting CTAHR — Apr. 2002
4
rial at the top will now be at the bottom. In the process,
you are aerating the pile, and you can add water if the
pile seems to be dry.
7. Continue to monitor the temperature in the pile. It
should heat up again. After the temperature peaks, turn
the pile once more. You may note that white molds de-
crease over time, insect populations will change, and ben-
eficial worms become abundant as the compost matures.
8. The process is completed when the pile does not
generate any more heat. When the pile is cool and the
compost has aged for another four weeks, it should be
finished. The pile should be much smaller than its origi-
nal size, and the original materials should no longer be
recognizable. The compost should be dark, loose (crum-
bly), and without any strong or unpleasant odor.
9. Use the compost to mix into the soil or to make com-
post tea to use for watering crops, seedlings, and starts.
Spread compost on your lawn and under shrubs, flow-
ering plants, vegetables, and trees.
Helpful hints
•
Chop or shred leaves, twigs, and other materials to
speed composting. Smaller pieces of organic mate-
rial “cook” faster than larger pieces because more of
the material surface is exposed.
•
A compost pile needs the right mix of materials to
decompose quickly. When building the pile, try to
have at least one part nitrogen-rich materials for ev-
ery two to three parts carbon sources. You may need
to experiment with different materials and proportions
to develop enough heat for rapid decomposition.
•
If there is not enough nitrogen-rich material, sprinkle
small amounts of commercial nitrogen fertilizer be-
tween layers. (Note: these fertilizers are concentrated;
use sparingly.)
•
Balance moisture and aeration to develop heat; too
much of either results in a “cold,” inactive pile. The
hotter the pile, the faster the composting process. Tem-
perature of an actively composting pile normally range
from 120 to 150°F. Higher temperatures (140–160°F)
kill harmful pathogens, insects, and weed seeds. Avoid
turning the pile too often, because the heat is lost
whenever the pile is turned. Turn it immediately, how-
ever, if an odor develops; the smell should fade away.
Alternatives to composting
You can reuse organic materials in your yard in other ways.
People practice “passive” composting when they pile up
organic materials but don’t turn the pile. Without turn-
ing, the pile will be “cooler” and much slower to decom-
pose. The materials break down eventually, and com-
post can be removed from the bottom of the pile. This
method may not kill weed seeds and plant pathogens,
and the pile may attract insect and animal pests.
To fertilize your lawn, leave nitrogen-rich grass clip-
pings in place after mowing. Mow “high”—clippings
should be less than one-third of the grass blade—and
mow so as to spread the clippings evenly across the lawn.
Mulching is similar to composting but requires less
effort. Chipped or shredded organic materials such as
lawn clippings, leaves, pine needles, shrubs, and trees
can be spread on the soil surface around your plants.
Mulch controls weeds, keeps moisture in the soil, and
reduces soil erosion.
Compost Pile Troubleshooting
Symptoms Likely problems Solutions
Offensive odor Insufficient aeration Turn and “loosen” pile
Ammonia odor Too much nitrogen Add carbon-source materials
Pile doesn’t heat up Insufficient nitrogen Add nitrogen-rich materials
Pile too wet Turn, add dry carbon sources, protect from rain
Pile too dry Turn, sprinkle with water
Pile too small Add more materials
Pile attracts flies, animals Inappropriate materials Don’t use meats, oils; remove attracting materials
or rotate them to center of pile and cover pile with
carbon-source materials.
Bamboo Fact Sheet and Growing Guide
Growth rate and ultimate size
Like any other grass, the growth rate of bamboo is determined by the degree of moisture and feeding. The ultimate
height and spread can therefore be difficult to predict. If plants are planted in humus rich soil that is well drained but yet
moisture retentive, your bamboo should thrive for you. The plants listed below are available from Coblands Nurseries
and the Cash & Carry’s. Some varities such as Phyllostachys aurea, Phyllostachys nigra, Pseudosasa japonica (Bambusa
Metake) are available up to 3 metres in a 45 litre pot. Larger plants are available on request.
Bambusa glaucescens ‘Alphonse Karr’
(Bambusa multiplex ‘Alphonse Karr’)
A handsome clump forming bamboo from China.
Young stem sheaths striped pink and green, and mature
stems about 2cm in diameter, are pink at first then turn
bright yellow to orange with green stripes of varying
widths. Extremely attractive and very popular.
Can grow up to 8 metres. Hardy to -13°C.
Fargesia nitida (Sinarundinaria nitida)
Originating from the Himalayas, thus being one of
the hardiest of all bamboos. It prefers semi-shade,
especially in hot, dry summers. The stem colour is
dark green sometimes red-brown. It is clump forming
and can grow up to 4 metres. Hardy to-30°C.
(A good substitute for Fargesia murialae, which
flowered two years ago)
Indocalamus tesselatus (Sasa tesselata)
Originating from China this plant can grow in semi-shade
to full sun. An excellent ground cover plant, growing to
1 metre in height. Its noticeable feature is its large leaves,
possibly the largest leaves of all hardy cultivated bamboo.
Hardy to -23°C.
Phyllostachys aurea
Originating from China, this plant is regularly planted in
the United Kingdom. The stems are green turning to a
dull yellow in sun, basal internodes thickening with
maturity. Ideal as a specimen, hedge or container plant.
Grows to 3-4 metres and is hardy to -20°C.
Phyllostachys aurea ‘Koi’
A very good coloured form, which in combination with
the interesting culms and upright growth, makes it a very
useful garden plant. ‘Koi’ has yellow culms and a green
stems. The plant benefits from a little shade to avoid the
green sulcus losing its intensity. Hardy to -20°C.
Phyllostachys babusoides ‘Castillonis’
‘Castillonis’ is the most popular form with its outstanding
yellow stems and green sulcus. It is a strong grower and
more successful in slightly colder regions. Hardy to -15°C.
Phyllostachys flexuosa
Originating from China, this green stem plant later turning
yellow with black speckles getting larger with age. The
upright stem has a zig-zag growth pattern, with a moderate
spreading habit. Height 2- 2.5 metres. Hardy to -23°C.
Phyllostachys nigra Boryana
Originating from China this bamboo has speckled brown
stems that are erect in habit. Can grow up to 3 metres
with moderate spread. Hardy to -23°C.
Phyllostachys nigra
Originating from China it requires a warm and sunny site.
The green stem gradually turns black with maturity. The
stems are naturally arched, with small leaves. It tends to
be slow spreading, growing to 2-3 metres. Hardy to -18°C.
Phyllostachys pubescens
(Phyllostachys hetrocycla f. pubescens)
Originating from China, it likes a warm site. The stem is
green-grey, with soft white hair when young. It will only
spread when planted in a warm position. Only grows to
3metres in the UK. Hardy to -23°C.
Pleioblastus chino ‘Kimmei’
(Hibanobambusa tranquillans ‘Kimmei’)
All Pleioblastus species produce long, powerful rhizomes
in good sites and a single plant therefore can spread
quickly. This plant has long, broad green leaves.
Grows to 1.5 metres. Regarded to be hardy.
Pleioblastus variegatus
This dwarf species has green and white striped leaves.
It benefits from pruning to keep the height in proportion
to its spread. A good ground cover plant for semi to full
shade, ideal for lightening dark areas. Evergreen, but best
to prune out old wood after the winter.
Pseudosasa japonica (Bambusa Metake)
Originating from South Japan and Korea this bamboo can
be planted in sun or shade. The stem is green in colour,
with moderate spread. Ideal as a specimen, hedge or in a
container. Height is 3.5 metres. A mature stand is very
impressive. Hardy -23°C.
COBLANDS
COBLANDS
Pseudosas japonica ‘Akebonosuji’
This is a fine variegated plant with bright yellow
variegation. This form should be divided frequently to
maintain the variegation as older plants have more
green leaves. Grows to about 1.5 - 2 metres and is
hardy to -23°C.
Sasa palmata f. nebulosa
In Japan, Sasa is planted to stabilize embankments
because the rhizomes penetrate the soil well and bind
it together. The plant needs much water and
nourishment to sustain such strong growth. If the 30cm
leaves become tatty, the grove can be occasionally cut
back to ground level. Can grow up to 1.5 - 2 metres.
Can be invasive if planted in ideal conditions.
Hardy to -30°C.
Sasaella ramosa (Arundinaria vagans)
Originating from Japan this excellent ground cover has
15cm long leaves that are green in colour. It is a quick
spreading plant that requires room to spread. Grows to
60cm tall and very hardy -30°C.
Semiarundinaria fastuosa
This plant comes from East Asia. It has a clump forming
habit and has relatively large leaves. This species is the
most wide spread and is known as the ‘Stately Bamboo’
because of its straight and strong stems. It is particularly
suitable for hedges. Can grow up to 7 metres.
Hardy to -23°C.
Shibataea kumasasa
Originating from Japan, this low growing bamboo is
80cm in height. It requires a damp position with some
shade in the garden. It is slow to spread, with rather
unusual short, broad leaves. The leaves are attached at
the node on very short stems, giving a rosette effect.
Hardy to -23°C.
Aquatic Gardening Construction and Maintenance
Aquatic plants have been an important part of gardens since early
history when they were first used in ancient gardens of the Far East,
Egypt and India. Early herbalists extracted tannin from the roots of
water lilies to calm a variety of nervous and digestive disorders.
Many water lilies also provided some of the earliest fabric dyes
which were extracted from their roots.
Contemporary aquatic gardening has received a lot of attention by
homeowners and commercial landscapers. The development and
increased availability of various types of preformed pools, flexible
liners and other containers has helped to foster the current increased
enthusiasm in aquatic gardening. These new materials are a great
improvement over the old tedious process of building pools out of
concrete.
The style and size of a water garden can range from a simple above
ground tub garden, a small preformed pond, or to a large pond
constructed with a flexible liner.
Pond location
The first step in designing a water garden is to consider where it
will be enjoyed the most. Some good locations for a pond are near
a patio, deck or within view from a window. A pond can be either
formal or informal in shape. Informally shaped ponds are the most
popular. Some common shapes are the classic kidney bean and the
figure eight.
In addition to locating the pond for best viewing a pond should be
located where it will receive at least five or six hours of direct sun
if flowering plants are desired. As the hours of direct sunlight
decreases, so do the blooms. The hardy and tropical bog plants
will perform best in semi-shaded sites. It is generally recommended
to avoid locating the pond directly under trees because of the leaves
and other debris that will fall into the pond. Also, avoid locating
the pond in a low spot because surface runoff may wash mud, lawn
fertilizers and pesticides into the pond.
Pond Construction
A pond can be made almost any size or shape desired if a flexible
liner is used. If a rigid preformed pond is chosen the size and
shape will be limited by what is available on the market. The
depth of a pond should be at least 18 inches in the center for the
successful over-wintering of hardy aquatic plants. A shallow ledge
should be provided along the outside edge of the pond for placement
of potted marginal plants. These plants cannot tolerate growing in
deep water. Make the ledge about 10 inches below the surface and
wide enough to submerge potted plants in a stable manner.
Installing a Flexible Liner
The development of flexible pond liners has done much to make
pond design and installation easier. It has played a major role in
the growing popularity of aquatic gardens. A flexible liner is a
thin rubber-like material cut from a large roll of material. Its
flexibility allows it to conform to the contour of any size and shape
desired. When properly installed, these liners will last for many
years.
There are three types of flexible liners on the market: polyvinyl
chloride (PVC), butyl rubber and ethylene propylene diene
monomer (EPDM). PVC liners were one of the first liners to be
developed. It ranges in thickness from 20-32 mils. PVC liners are
the least expensive and will last 7 to 10 years. The most limiting
factor of its durability is exposure to the sun. PVC is only moderately
resistant to the effects of ultraviolet radiation and will eventually
crack when exposed to prolonged sunlight. Always keep the pond
filled to the top to prevent the liner from being exposed to direct
sunlight.
Butyl rubber has also been used for a long time. It is a highly
recommended synthetic rubber liner because of its resistance to
ultraviolet radiation. It has a useful life of 20 years or more. It is
30 mils thick. It is easier to work with than the stiffer PVC liners
because it is more flexible.
Educating People To Help Themselves
Local Governments - U.S. Department of Agriculture Cooperating
The University of Maryland is equal opportunity. The University’s policies, programs, and activities are in conformance with pertinent Federal and State laws and regulations on nondiscrimination regarding race,
color, religion, age, national origin, sex, and disability. Inquiries regarding compliance with Title VI of the Civil Rights Act of 1964, as amended: Title IX of the Educational Amendments; Section 504 of the
Rehabilitation Act of 1973; and the Americans With Disabilities Act of 1990; or related legal requirements should be directed to the Director of Personnel/Human Relations, Office of the Dean, College of
Agriculture and Natural Resources, Symons Hall, College Park, MD 20742.
2
A more recent entry into the pond market, which is very similar
to butyl rubber, is EPDM. This is also a type of synthetic rubber
that is less expensive than butyl and has the same appearance and
durability. It is the thickest liner available (45 mil). It is a dark
charcoal gray or black and quite flexible and easy to install. EPDM
was originally used in the roofing industry and was manufactured
with an antifungal mineral talc coating. Some problems of fish
toxicity have been reported with earlier EPDM. The products
marketed as fish safe EPDM do not have these mineral talcs and
are very safe to use for ponds.
Determining Liner Size
Flexible liners are cut from rolls that may be 10, to 25 feet or
more in width. To determine the size of the liner required, determine
the length and width of the proposed pond. Next determine the
maximum depth in feet and multiply this by 2. Add this amount to
both the length and width. Finally add at least one additional foot
to both the length and width for the top edge overlap.
Formula:
For additional protection use a spun underlayment material made
for this purpose. Rug padding or several layers of wet newspapers
can also serve as a cushion under the liner.
Carefully spread the liner to fit the contours the best you can to
make the liner conform to the excavation. Don’t worry too much
about the unsightliness of the folds. They will lay flat with the
weight of the water. When the pool is filled with plants, these
folds will be difficult to see. Gradually fill the pond with water as
the liner is folded into place.
Installing a Rigid Liner
Actually almost any water tight container if large enough can be a
potential water garden. Many things, such as large ceramic pots,
plastic horse trough, child’s swimming pools, half whiskey barrels,
etc., are suitable for above or below ground. New whiskey barrels
should be aged by filling with water, emptying and refilling until
the odor of alcohol is gone. There are plastic inserts that may be
used in them to avoid the toxic effect of the alcohol. To assure the
successful overwintering of hardy plants in above ground containers,
install a stock tank or pond heater.
Using a rigid liner has merit because it is tough, durable, quick
and easy to install, has a life expectancy of over fifty years (for
fiberglass) and comes already molded into various shapes. Other
types of preformed liners are made of molded semi-rigid plastic
which are less expensive but also less durable than fiberglass. As
with the flexible liners all sharp objects should be removed and
the excavation be lined with an inch of sand. After the site
preparation, place the pool so that the rim is slightly above the soil
line. Level the pool from side to side using a carpenter level.
Place soil around the pool exterior while filling the pool with
water. This will help reduce stress on the pool as it is being filled
with water. Edge the top with flat stones.
Constructing a water garden is really not a very difficult task.
When the proper site has been selected and the pond properly
installed, it will provide you with years of beauty and enjoyment.
Liner width = pond width + 2x depth + 1 ft.
Liner length = pond lenght +2x depth + 1 ft.
The extra 1 ft is to allow sufficient quantity of the liner to go
under the edging stones and behind them. Do not trim the liner
until the pond is finished and the water level is adequate. Allowing
the water level to submerge part of the rock edging helps to make
a very natural-looking edge.
Remove all sharp objects like stones and tree roots to protect the
pond liner from puncture. These lines are very tough but if a
puncture or tear should develop, it is easily repaired with a pond
liner repair kit.
INSTALLATION OF A FLEXIBLE LINER
3
Pond Maintenance Tips
Like any garden worth keeping, there is some basic maintenance
techniques to practice. In the spring remove any debris that may
have fallen into the pond during the winter. If there is an excessive
accumulation over many years, the pond will have to be drained
completely to remove this material.
Water lilies and other aquatic plants grow very rapidly and, in
time, become crowded, reducing their vigor and bloom. Every
two to three years they should be lifted from their containers and
divided in the spring as new growth begins to appear. Give them
their first fertilization at this time.
In the summer, remove dead plant debris. Water lilies, in particular,
continually have older leaves dying as new leaves emerge. Excessive
plant growth may need to be removed to make viewing the fish
possible. Continue to fertilize lilies during the summer.
Occasionally, insects specific to aquatic plants, such as the water
lily aphid and the water lily beetle, will invade the pond. Fortunately
their destruction is usually not very severe. Their are no registered
pesticides for home aquatic ponds. Simply dunk the leaves in the
water or hose off the aphids. The fish will enjoy eating them.
The water lily beetle is easily controlled by removing infested
leaves. This will break the life cycle.
In the fall cut back the frost-killed tops of the hardy plants. The
tropical plants can be discarded. Stop feeding the fish when the
water temperature drops below 55 degrees F, this usually occurs
in mid to late November. Move all plants into the deeper area of
the pond (18 inches) for freeze protection. If the pond is in a
location where tree leaves might fall into it, cover the pond with
chicken wire.
And lastly, if there are fish in the pond, install a floating stock
tank heater to keep a small portion of the pond free of ice in the
winter. This is an automatic deicer than comes on when the
temperature is a few degrees above freezing. A heater of 1500
watts is recommended for Maryland winters. One word of caution,
the fish will group around the heater and those that get pushed
against the heater element get burned. A good heater will have a
small guard panel to keep the fish from touching the heating
element. The fish will benefit from this ventilation hole which
allows oxygen to enter. However in larger ponds the heater will
freeze in place during very cold winters. If the pond should freeze
over do not try to crack or break the ice. The shock may injure the
fish.
Sunday, 15 March 2015
A Fungal Disease of Shade Trees
Anthracnose is a name for a group of diseases caused
by several closely related fungi that attack many of our
finest shade trees. It occurs most commonly and severely
on sycamore, white oak, elm, dogwood, and maple.
Other host plants that are usually only slightly affected
include linden (basswood), tulip tree, hickory, birch, and
walnut. Each species of anthracnose fungus attacks only
a limited number of tree species. The fungus that causes
sycamore anthracnose, for example, infects only
sycamore and not other tree species. Other
anthracnose-causing fungi have similar life cycles, but
require slightly different moisture and temperature
conditions for infection.
Symptoms
Anthracnose fungi may cause defoliation of most maple,
oak, elm, walnut, birch, sycamore, and hickory species
and, occasionally, of ash and linden trees. Damage of this
type usually occurs after unusually cool, wet weather
during bud break. Single attacks are seldom harmful to
the tree, but yearly infections will cause reduced growth
and may predispose the tree to other stresses. Damage
may be in the form of:
• killing of buds, which stimulates the development of
many short twigs or “witches’ brooms;” these may spoil
the shape of the tree
• girdling and killing of small twigs, leaves, and branches
up to an inch in diameter
• repeated early loss of leaves, which over several
successive years weakens the tree and predisposes it
to borer attack and winter injury
• premature leaf drop, which lessens the shade and
ornamental value of the tree
Specific symptoms of anthracnose vary somewhat
depending on the tree species infected:
• On sycamore, leaves and growing tips of the twigs may
die as they emerge from the bud. This damage is often
confused with late frost injury. Sudden browning and
killing of single leaves or leaf clusters may occur as the
leaves expand. The disease continues to develop later
in the season, resulting in irregular brown to nearly
black, dead areas between or along the main leaf veins
and extending to the margin (Fig. 1). Infected leaves
fall when the
petiole is girdled
or when several
lesions enlarge
and coalesce to
form large, dead
blotches. After
defoliation from
spring infections,
the tree may
appear bare
except for tufts
of leaves at
branch tips.
Regrowth
appears by
midsummer.
Sunken cankers
form on larger
twigs during
cooler weather
in fall, winter,
and spring (Fig.
2). Twigs may die
as a result of
canker
formation.
When terminal twigs are killed, lateral twigs take over
as leaders. Thus, repeated twig dieback results in the
formation of crooked branches.
• On oak, small scattered brown spots or large light
brown blotches form along veins. The leaves look
scorched.
• On maple, purplish brown areas form along the veins
or larger, irregular, light to dark brown spots form
along or between veins (Fig.3), extending to the leaf
Fig. 2. Twig canker caused by the sycamore
anthracnose fungus.
(Photo by E. Dutky-U. Md.).
Fig. 1. Blighting of leaf tissue caused by the
sycamore anthracnose fungus.
(Photo by E. Dutky-U. Md.).
Disclaimer
Commercial products are named in this publication for informational purposes only. Virginia Cooperative Extension does
not endorse these products and does not intend discrimination against other products which also may be suitable.
margin.
• On ash, large,
irregular, light
brown spots
appear, most
often along leaf
margins (Fig. 4).
• On linden, large
brown areas with
black margins
appear, especially
along main leaf
veins. The areas
are small to
large and
circular to
elongate.
• On birch, small,
irregular,
circular, brown
spots with dark
brown margins
are apparent.
• On hickory, large, irregular, reddish brown spots
appear on the upper leaf surface and a dull brown
area is apparent on the lower leaf surface.
• On walnut, irregular, circular, dark brown to black
spots are visible on leaves.
• On dogwood, two different anthracnose diseases may
occur. Symptoms of spot anthracnose include tiny
leaf and bract spots, about the size of a pinhead, with
whitish centers and purplish borders. Symptoms of
Discula anthracnose (dogwood anthracnose)
include irregular, small to large brown blotches with
purplish borders on leaves and bracts, lower branch
dieback, and trunk cankers that culminate in death of
the tree.
Disease Cycle
Anthracnose fungi overwinter in infected leaves on the
ground. Some canker-causing anthracnose fungi, such as
the sycamore anthracnose fungus, also overwinter in
twigs on the ground or in cankered twigs that remain on
the tree. Microscopic spores of most anthracnose fungi
are produced in infected tissues during April and May.
The spores are blown and splashed to the buds and young
leaves and, with favorable moisture conditions, penetrate
and infect the swelling buds and unfolding leaves. Long
rainy periods help the fungus to spread rapidly.
Control
Disease control measures for different trees vary slightly
because the period of infection is different depending on
the fungal species involved. If fungicides are used, sprays
must be applied on a preventative basis, beginning before
infection takes place. Spraying large trees for many
anthracnose diseases may be impractical and
unnecessary, especially in dry springs. Sanitation is
important in reducing the amount of fungal inoculum
available for new infections. For large, high-value
sycamore
trees,
injection
with the
fungicide,
thiabendazole
hypophosphite
(e.g.
Arbotect
20-S), on a
3-year basis
is also an
option
(Fig 5).
For effective anthracnose control of most anthracnose
diseases:
• Rake up and remove infected leaves in the fall. Leaves
may be shredded and composted or burned.
• Prune out and burn or bury dead twigs and small
branches. Prune to thin the crown. Thinning will
improve air movement and promote faster drying of
the leaves.
• If fertilizer is needed, fertilize in the fall about a month
after the average date of the first frost or in early spring
about a month before the date of the last frost to
increase tree vigor.
• If chemical control is desired, spray with a fungicide
containing mancozeb (e.g. Manzate 200, Dithane M-45)
at budswell and twice again during leaf expansion (in
most years, this would be at 10-14 day intervals).
Entomology and Plant Pathology Adult azalea lace bug
Since its introduction from Japan in the early 1900’s,
the azalea lace bug has become a destructive pest of azaleas.
Although this bug prefers evergreen azalea varieties, it will
infest deciduous varieties. Mountain laurel can also become
infested.
The smooth, white egg of the lace bug, which measures
approximately 0.4 mm by 0.8 mm, is flask shaped with the
neck to one side. It is usually deposited in the underside
tissue of a young leaf along the mid-rib or large vein. Each
egg is inserted in the tissue with its neck slightly about the
leaf surface.
Female lace bugs lay groups of eggs on the underside of
the leaves in September and October. These eggs overwinter
and hatch during March and April. The populations build
from spring through autumn with about four generations
possible. A large population of lace bugs can be established
during July, August and September. It is quite possible to
find all stages of the lace bug together under a leaf during
this time.
The adult lace bug is 1/8 inch long and 1/16 inch wide.
It has lacy wings with brown and black markings and light
brown legs and antennae. The young nymph lace bug is
nearly colorless at hatching but soon turns black and spiny.
It sheds its outer skin six times and ranges in size from 0.4
mm to 1.8 mm before becoming an adult.
Injury to the plants is caused by nymphs and adults as
they extract sap from the under surfaces of the leaves. The
damage appears as spotted discoloration or bleaching of the
upper surfaces of the leaves. In severe infestations, the
leaves become almost white, many of them drying com-
pletely and dropping off. The undersides of the leaves are
also disfigured by the black, dry, shiny excrement and cast
skins of the insects.
SP290-E 1M 6/03(Rev) E12-4615-00-033-03
The Agricultural Extension Service offers its programs to all eligible persons regardless of race, color, age,
national origin, sex, veteran status, religion or disability and is an Equal Opportunity Employer.
COOPERATIVE EXTENSION WORK IN AGRICULTURE AND HOME ECONOMICS
The University of Tennessee Institute of Agriculture, U.S. Department of Agriculture,
and county governments cooperating in furtherance of Acts of May 8 and June 30, 1914.
Agricultural Extension Service
Charles L. Norman, Dean
In order to protect people and the environment, pesticides should be used safely. This is everyone’s responsibility, especially the user. Read and follow
label directions carefully before you buy, mix, apply, store or dispose of a pesticide. According to laws regulating pesticides, they must be used only as
directed by the label. Persons who do not obey the law will be subject to penalties.
Disclaimer Statement
Pesticides recommended in this publication were registered for the prescribed uses when printed. Pesticides registrations are continuously reviewed.
Should registration of a recommended pesticide be canceled, it would no longer be recommended by The University of Tennessee.
Use of trade or brand names in this publication is for clarity and information; it does not imply approval of the product to the exclusion of others which
may be of similar, suitable composition, nor does it guarantee or warrant the standard of the product.
Control Measures
Repeated applications of an insecticide are usually
needed to effectively control lace bugs. The first application
should be made as soon as nymphs appear in the spring,
followed by a second application seven to 10 days later.
Applications should be repeated at monthly intervals as
needed.
Thorough coverage of the undersides of the leaves
where the insects are found is essential if good control is to
be expected. Select one of the insecticides listed below and
follow the label directions. Chlorpyrifos is for use in
commercial nurseries, not for residential use.
• acephate (Orthane Turf, Tree & Ornamental Spray [75% SP], Address T/O [75% SP] );
•chlorpyrifos (Dursban 50 W [50% WSP]);
•beta-cyfluthrin (Tempo SC Ultra [1 lb/gal SC]);
•cyfluthrin (Advanced Garden Lawn & Garden Multi-Insect Killer [0.75% EC], Decathlon 20 WP [20% WP],
Tempo 20 WP [20% WP]);
•imidacloprid (Merit 75 WP [75% WP], Merit 2 [2 lb./gal.F], Merit 2.5 G [2.5%G], Marathon 60 WP [60% WP],
Marathon II [2 lb./gal.F], Advanced Garden Tree and Shrub Insect Control[1.47% concentrate]);
•cyfluthrin plus imidacloprid (Advanced Garden Rose & Flower Insect Killer [0.72% cyfluthrin, 0.72% imidacloprid]);
•disulfoton plus 16-8-8 fertilizer (Advanced Garden 2-in-1 Systemic Azalea, Camellia & Rhododendron Care [1% G]);
•dimethoate (Dygon 400 [4 lb/gal EC], Dimethoate 2.67 EC [2.67 lb/gal EC]); OR
• horticultural oil (SunSpray Ultra-Fine Spray Oil [98% EC], Ultra-Fine Oil [98% EC]).
Marathon 60WP is for use only on greenhouse and
nursery ornamental plants, using soil drenches or through an
irrigation system. On stock plants and woody crops with a
production cycle of greater than one year, application may
not exceed once a year.
Merit 75 WP and Merit 2 can be used on turfgrass,
landscape ornamentals and interior plantscapes. It can be
applied to the foliage or even more effectively as a soil
injection or soil drench. When using a soil injection or soil
drench, make application 30 days prior to anticipated pest
infestation. The addition of a nitrogen containing fertilizer,
where applicable, into the solution will enhance the uptake
of the active ingredient
Bacterial Spot of Peach
Bacterial spot, known also as bacteriosis, bacte-rial shothole, or shothole, is caused by the bacterium
Xanthomonas campestris pv. pruni. Although primarily
a peach and nectarine problem, this disease also occurs
on apricots, plums and, to a lesser degree, cherries.
Losses due to bacterial spot occur from affected
fruit and from the devitalization of trees caused by
frequent defoliation. Such weakened trees are more
subject to winter injury. Losses are greatest in light,
low-fertility soils. Trees low in vigor are more suscep-
tible to bacterial spot than vigorous trees.
Symptoms
Numerous small spots form on the leaves. The
spots are angular, purple to purplish-brown or black.
Spots may merge and the centers may fall out, giving
the characteristic “shothole” appearance. Heavily
infected leaves turn yellow and drop. Severe leaf loss
early in the summer reduces fruit size and weakens the
tree. A few lesions can result in severe defoliation on
sensitive varieties; tolerant varieties may require many
more lesions for defoliation.
On fruits, tiny water-soaked, sunken spots form.
The spots enlarge and merge to cover large, irregular
areas. As the fruit grows, cracking or pitting occurs in
the lesions. The brown rot fungus can easily enter these
cracks and become established. Every effort to control
brown rot should be made when deep bacterial spots
form on fruits.
The bacterial spot organism infects only cur-
rent-season growth. On twigs, two types of cankers
form. “Summer cankers” develop on green twigs,
usually after leaf spots are evident. The lesions begin
as water-soaked, purplish spots between the nodes.
The cankers enlarge, become slightly sunken and are
circular to elliptical in shape. Cankers caused by the
peach scab fungus are similar, but scab cankers are
slightly raised.
Steve Bost, Professor
Entomology and Plant Pathology
Infections that occur late in the year on young,
succulent twigs show up as “spring cankers” the fol-
lowing spring. These cankers, which tend to appear at
buds or nodes about the time the fi rst leaves appear,
are water-soaked and slightly darkened. As the season
progresses, the epidermis over the lesion ruptures,
releasing the bacteria.
Disease Cycle
The bacterial spot organism over-winters in peach
twigs infected late in the summer. These infections are
not visible until spring, when they are referred to as
“spring cankers.”
Bacteria are released from cankers in an ooze, and
the bacteria are spread to other tissues by rain and in-
sects. The bacteria infect expanding leaves, green fruit
and current-year twigs. Penetration occurs through
stomata or lenticels when surface moisture is present.
Repeated infections will occur throughout the
growing season if environmental conditions are favor-
able. Severe disease is more apt to occur during warm
weather with frequent rains. The disease makes little
progress during summer weather that is hot and dry.
In late summer and fall, bacteria are carried to
young succulent stems. Cankers resulting from these late
infections do not appear until spring, when they produce
inoculum for early spring disease development.
Control
Bacterial spot is very diffi cult to control during
rainy seasons. No entirely satisfactory control method
is known. Homeowners are particularly limited as to
chemicals available to them for bacterial spot control.
Proper cultural practices are important in minimizing
this disease.
1. Resistance to bacterial spot should be a primary
consideration in peach varietal selection. Some
of the more resistant varieties include Bell of
Georgia, Biscoe, Harken, Loring, Madison, Ranger,
Redhaven, Redskin and Sunhaven. Very susceptible
varieties include Elberta, July Elberta, Halehaven,
Rio-Oso-Gem and Sunhigh.
2. Vigorous trees are less susceptible to the disease
than weak, neglected trees. Fertilize according to
a soil test, to maintain vigorous, but not excessive,
shoot growth.
3. Allow for good air circulation by avoiding low-lying
orchard sites and by adhering to correct pruning
practices. Prune during dry weather in the latter
part of the dormant season.
4. Chemical spray applications may provide some sup-
pression of bacterial spot. Use dodine 65 WP plus
Captan 50 WP (1/2 lb. plus 1 lb. per 100 gal. water).
Observe label precautions, as this mixture can
cause injury under certain conditions. Mycoshield
at 12 oz. per 100 gal. is probably a more effective
treatment. Mycoshield should be tank mixed with
sulphur (6 lbs. per 100 gal.) or Captan (2 lb. per 100
gal.) for broad spectrum disease control. Bacterial
spot sprays should be initiated at shuck-split and re-
peated at seven-day intervals through cover sprays.
Observe harvest restrictions.
Precautionary Statement
To protect people and the environment, pesticides should be used safely. This is everyone's responsibility, especially the user. Read and
follow label directions carefully before you buy, mix, apply, store or dispose of a pesticide. According to laws regulating pesticides, they must
be used only as directed by the label. Persons who do not obey the law will be subject to penalties.
Disclaimer Statement
Pesticides recommended in this publication were registered for the prescribed uses when printed. Pesticides registrations are continuously
reviewed. Should registration of a recommended pesticide be canceled, it would no longer be recommended by the University of Tennessee.
Use of trade or brand names in this publication is for clarity and information; it does not imply approval of the product to the exclusion
of others that may be of similar, suitable composition, nor does it guarantee or warrant the standard of the product.
Bacterial Leaf Scorch in Landscape Trees
Bacterial leaf scorch is a chronic disease caused by
a bacterium, Xylella fastidiosa, that grows in the xylem of
the tree and physically clogs these water-conducting ves-
sels. As the bacterium multiplies, water transport becomes
more limited. The tree suffers water stress, especially in
mid to late summer, resulting in leaf scorch; a browning
or discoloration of the margins of the leaves with interior
portions of the leaves near the veins remaining green. The
bacterium is spread by leafhoppers, spittlebugs and other
xylem-feeding insects.
Hosts and Symptoms
Bacterial leaf scorch has a wide host range including
many herbaceous and woody species (goldenrod, alfalfa,
clover, blackberries). Tree species most affected are elm,
sweetgum, sycamore, dogwood, mulberry, red maple, sugar
maple and particularly, many species in the red oak fam-
ily – pin, northern red and scarlet oaks. Symptoms usually
appear on one branch and progressively spread throughout
the crown in subsequent years. On large trees, it may take
five to 10 years for the disease to progress through the entire
crown. Infested branches generally releaf for several years
following the onset of scorch disease symptoms. Leaves will
appear normal in the spring, but later show scorch symp-
toms. Growth is reduced and tree crowns become progres-
sively sparse as the tree declines. Eventually, infected trees
will succumb from the disease.
Diagnosis
Symptoms of bacterial leaf scorch are often mis-
taken for those produced by vascular wilt diseases such as
oak wilt and Dutch elm disease. The difference is that the
scorch and decline occurs progressively over several years
rather than occurring over a period of two or three months
with the wilt diseases. Sometimes bacterial leaf scorch is
difficult to diagnose on symptoms alone, since the symp-
toms are similar to other related tree responses to drought,
salt damage or root injury. Early fall coloration of leaves
often coincides with leaf scorch. Therefore, a plant tissue
analysis lab must perform a positive diagnosis to determine
if the bacterium is present.
Integrated Management
Unfortunately, no cure
or treatment for infected trees
or a strategy for preventing
infection is presently avail-
able. Leafhoppers and other
insects that spread the dis-
ease are active for most of
the growing season. This
makes disease prevention by
controlling the insect vector
with insecticide treatments
impractical.
The life of infected
trees can be prolonged with
judicious management. Trunk
injections with antibiotics
Bacterial leaf scorch on northern red oak. leaf scorch on a sycamore leaf. Note the live tissue near the veins of the leaf
and the dead tissue at the leaf margins.
have been shown to suppress the symptoms. Treatments must
be made annually in late May or early June. Antibiotics only
cause a remission of the symptoms, not a cure. Injections
must be applied each year. The continual wounding made by
these injections raises concerns whether the wounds provide
an entrance to secondary disease organisms.
Pruning is another possible treatment if the disease
is detected early. Pruning of infected branches can delay
the spread of the disease within the crown. Mulching and
watering during drought periods may reduce moisture stress
and possibly delay scorch development. The effects of fer-
tilization are unclear with this disease. Fertilization treat-
ments are recommended when a soil or leaf analysis shows
a nutrient deficiency.
Summary
Since there is no effective treatment or cure for bac-
terial leaf scorch, one should expect diseased trees to be
gradually lost over the years. The eventual best remedy for
bacterial leaf scorch is tree replacement once the tree no lon-
ger adds to the landscape. However, the life of the tree can
be prolonged somewhat with judicious management since
tree death is not immediate. Thus, tree replacement can be
done before the infected tree dies, allowing tree establish-
ment before infected trees are removed.
Bacterial Wetwood Disease of Trees
Wetwood is a water-soaked condition of wood in the
trunk and branches of trees. This condition has been attrib-
uted to bacterial infection in the inner sapwood and outer
heartwood area of the tree. Infection is normally associated
with wounding or environmental stress on the tree. The
bacteria, Enterobactor cloacae, has been implicated as the
cause of wetwood in elm, but numerous other bacteria have
been associated with this condition in other trees such as
cottonwood, willow, ash, maple, birch, hickory, beech, oak,
sycamore, cherry and yellow-poplar. Bacteria alter wood
cell walls, causing moisture content of the wood to increase.
Infected wood may also have a high (basic) pH and a high
concentration of microelements.
The most common evidence of wetwood is bleeding
or “fluxing” of sap from the trunk or larger limbs of a tree.
Often this fluxing is associated with a wound, but has also
been observed where no obvious wound existed. Bacteria
associated with wetwood are common in soil and water
Stain associated with bacterial wetwood disease on the trunk
of pin oak.
Closeup of damage to bole (pruning scar) where fl ux of sap
is exuding. Notice the bird peck hole where birds are either
hunting for insects attracted by the fl ow of sap or actually
feeding on the sap. The flux of sap may be the result of insects boring, animal rubbing
or mechanical injuries to the tree, such as frost cracks or
pruning. During extended drought periods, the condition
has been noticed at the base of larger, older trees, espe-
cially oaks.
Bacterial fermentation of the sap during warm
weather produces gases (often methane), causing pressure
in the affected wood. The pressure forces the sap out of the
tree by the path of least resistance. This is why the fluxing
is usually found near wounds and openings in the bark.
The exuding sap will run down the side of the tree, soak-
ing a large area of bark. Once exposed to the air, the sap
will become contaminated with other bacteria, yeasts and
fungi, resulting in a foul-smelling, slimy, foamy substance.
Fluxing of the sap is sometimes referred to as slime flux.
The flux associated with wetwood should not be confused
with the normal bleeding that may occur after pruning.
If slime flux runs down the tree for extended periods,
it may cause the bark to decay and eventually may damage
the cambium. The cambium is the regenerative layer of tis-
sue between the bark and the wood that is responsible for the
tree’s diameter growth. The cambium produces new wood
and bark each year and is directly related to tree vigor.
Fluxing of sap may also cause toxicity in the sap that
is carried to the branches, thus resulting in wilting and
defoliation of the leaves. Plants adjacent to the tree trunk
may also be killed or damaged by toxic sap exuded from
wetwood wounds. Wetwood alone rarely causes tree death,
but may lead to secondary pathogens that combine for con-
tinued tree decline and eventual death.
Wood-infesting and other insects are attracted to the
flux exudates. These insects may lay eggs and reproduce in
the fluxing material. Wood-infesting insects are likely to
invade the tree after being attracted to the slimy exudate.
There is no control for wetwood disease. Preventing
damage and stress to tree roots and stem is probably the best
way to avoid a wetwood problem. Drought conditions tend
to increase wetwood problems, so it is important that the
tree receives adequate water during the growing season.
Treatments for trees already infected with wetwood
are generally only cosmetic and of no remedial value. Trees
affected with wetwood will compartmentalize around the
wetwood-affected area, and limit its spread to other parts
of the tree. This is nature’s way of protecting trees from
infections.
A previously recommended practice of installing
drain tubes in the wetwood-affected area to relieve sap
pressure and remove lateral liquids has been challenged by
researchers in recent years. Research has found that the ben-
efits of tube installation are offset by the injury the instal-
lation causes. In fact, the spread of the infection to other
tree parts may be increased by using drain tubes. Also, the
removal of the internal liquids can create conditions favor-
able for invasion by wood-decay fungi.
For these same reasons, research has shown it is better
not to scrape the wound and clean out the infected wetwood
areas. Wetwood will cause only a small amount of injury
for most healthy trees if they are allowed to compartmen-
talize the diseased area. It is far better for the tree to have
a small section infected by wetwood than to be invaded by
wood-decay fungi that could cause far more damage and
structurally weaken the tree.
Use preventative measures to avoid wetwood disease.
Follow good pruning techniques that result in minimum
injury to the tree. Prune only as required for shaping the
tree and removing the dead wood. Never cut behind the
bark ridge when pruning a branch; i.e., do not make flush
cuts. Protect trees, especially the roots, during construction
projects. Fertilize and water as needed to avoid nutritional or
moisture stress. Trees usually do not require watering unless
prolonged drought occurs. Trees growing in lawns do not
need additional fertilizer if the lawn grass is fertilized.
For trees with wetwood disease, wash the slime flux
from the surface and apply insecticidal spray to protect the
tree from insect infestations. Loose, dead bark or limbs
should be removed. Cutting or scraping the fluxing area is
not recommended. Increased applications of nitrogen fertil-
izer have increased the growth rate and recovery of some
wetwood-affected trees.
Steps to Planning a Theme Garden
Determine what type of theme garden you
would like. In this case, we want an Asian-
American Garden.
2. Determine the location and size of your
garden. Select an area that receives at least
six hours of full sunlight every day and is
close to a water source.
3. Take a soil sample and send it to be ana-
lyzed with the help of your county Extension
agent.
4. The shape of your garden may be a 4’x4’
square area or whatever fits into your land-
scape scheme!
5. Amend the soil according to soil test
results. Using a tiller, work in a 3-inch layer
of organic matter (peat moss, manure, rotted
compost, etc.) to improve the soil structure.
6. Select plants from list of recommended
varieties.
7. Plant warm-season vegetables, such
as tomatoes, peppers, eggplant and most
herbs, after April 25
th
to avoid frost or freeze
damage.
8. Water, weed, fertilize and
harvest on a weekly basis
throughout the growing sea-
son.
9. Enjoy your abundance of
fresh vegetables and herbs.
Asian-American Theme Gardens will con-
tain stir-fry type plants introduced to the
United States by Asian immigrants.
Asian cultures relate to nature by capturing
its heart and spirit and incorporating that es-
sence into daily life. Asian peoples have long
been masters in the art of gardening in small
courtyards.
When using fresh greens to make salad mixes,
use leaves with mild flavors such as lettuce or
endive to make up the bulk of the salad. Sharp
or pungent leaves such as basil, coriander,
parsley, mizspoona and mustards should be
used in smaller amounts as an accent.
Recommended Plants
Red Mustard: Mix young leaves in with other
salad greens or sprinkle flowers on sand-
wiches.
Mizspoona: Adds a spicy bite to salads or
stir-fry dishes.
W037
The Agricultural Extension Service offers its programs to all eligible persons regardless of race, color, national origin, age, sex,
disability, religion or veteran status and is an Equal Opportunity Employer.
COOPERATIVE EXTENSION WORK IN AGRICULTURE AND HOME ECONOMICS.
The University of Tennessee Institute of Agriculture, U.S. Department of Agriculture,
and county governments cooperating in furtherance of Acts of May 8 and June 30, 1914.
Agricultural Extension Service, Charles L. Norman, Dean
Pac Choi: A traditional stir-fry. Separate leaf
from stem and chop both into 2-inch wide
diagonal chunks. Also good raw in salads.
Snap Peas: Plant early in spring when tem-
peratures are cool. Harvest daily.
‘Thai’ Basil: This herb with its warm spicy
flavor is a native of Africa and Asia held in
divine essence. Pick leaves when young for
best flavor.
Others: Asian red kale, eggplant, coriander,
radish, mizuna, early endive and many lettuce
varieties.
Subscribe to:
Posts (Atom)