Tag: leaf quality developer

Tobacco Sucker Control

 

AXE-11 liquid de-suckering agent is a contact type suckericide made from natural fattly
alcohols to control suckers in tobacco crops. Application of AXE-11 liquid suckericide
improves quality and quantity of tobacco crop. On application of AXE-11 liquid suckericide
labour cost is decreased and yield of tobacco increases by 25% – 35%.
AXE-11 will not leave any residues on the crop.

Note : Topping stage is of importance for yield production in tobacco to improve plant growth, leaf size development, improved quantity and quality. Moreover, application of AXE – 11 suckericide in early button stage can control suckers better than flowering stage.

How to apply:

1 litre AXE-11 liquid de-suckering agent should be mixed with 20 litres water (1:20) Mix thoroughly to form uniform mixture. Apply the solution using an applicator after topping from top to bottom in clear weather between 10.00am to 4.00pm

AXE-11 liquid de-suckering agent shall be applied on requirement.

 

Packing Available in 2.5 litre HDPE jerry can

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 






Sulfur deficiency

Sulfur deficiency

 

Sulfur (S) is a part of every living cell and is a constituent of two of the 20 amino acids that form proteins. Unlike the other secondary nutrients like calcium and magnesium (which plants take up as cations), S is absorbed primarily as the S042- anion. It can also enter plant leaves from the air as dioxide (SO2) gas.

A chain is only as strong as its weakest link. Often overlooked, sulfur (S) can be that weak link in many soil fertility and plant nutrition programs. As of late, there are several reasons for the increased observance of S deficiencies and increased S needs.

Government regulations now restrict the amount of sulfur dioxide (SO2) that can be returned to the atmosphere from coal-burning furnaces. Most of the S is now removed from natural gas used in home heating and in industry. Also, catalytic converters in new automobiles remove most of the S that was previously returned to the atmosphere when S-containing gasoline was burned in automobiles. In addition, S-free compounds have replaced many of the insecticides and fungicides formerly applied to control insects and diseases in crops. As a result of these government restrictions, less S returns to the soil in rainfall.

Sulfur is supplied to plants from the soil by organic matter and minerals, but it’s often present in insufficient quantities and at inopportune times for the needs of many high-yielding crops. Organic matter ties up most S to the soil, where it remains unavailable to plants until soil bacteria convert it to sulfate (SO4-2) form. That process is known as mineralization.

Just like nitrate nitrogen (N), sulfate moves through the soil and can leach beyond the active root zone in some soils during heavy rainfall or irrigation. Sulfate may move back upward toward the soil surface as water evaporates, except in the sandier, coarse-textured soils that may be void of capillary pores. This mobility of sulfate S makes it difficult to calibrate soil tests and use them as predictive tools for S fertilization needs.

In the field, plants deficient in S show pale green coloring of the younger leaves, although the entire plant can be pale green and stunted in severe cases. Leaves tend to shrivel as the deficiency progresses.

Sulfur, like N, is a constituent of proteins, so deficiency symptoms are similar to those of N. Nitrogen-deficiency symptoms are more severe on older leaves, however, because N is a mobile plant nutrient and moves to new growth. Sulfur, on the other hand, is immobile in the plant, so new growth suffers first when S levels are not adequate to meet the plant’s need. This difference is important in distinguishing between N and S deficiencies, particularly in early stages.

 

 

Symptoms of deficiency can vary across crop species, but similarities exist for how nutrient insufficiency impacts plant tissue color and appearance. Nutrient deficiencies are commonly associated with the physical location on the plant
(i.e., whether the symptoms are primarily observed on older versus newly formed plant tissue), but these symptoms can spread as the severity of the deficiency progresses.

 


Oxygen

Oxygen

Oxygen (O) is responsible for cellular respiration in plants. Plants acquire O by breaking down carbon dioxide (CO2) during photosynthesis and end up releasing the majority of it as an unnecessary byproduct, saving a small portion for future energy.

 

Molybdenum deficiency

Molybdenum deficiency

Molybdenum (Mo) is a trace element found in the soil and is required for the synthesis and activity of the enzyme nitrate reductase. Molybdenum is vital for the process of symbiotic nitrogen (N) fixation by Rhizobia bacteria in legume root modules. Considering Mo’s importance in optimizing plant growth, it’s fortunate that Mo deficiencies are relatively rare in most agricultural cropping areas.

Plants take up molybdenum (Mo) as the MoO42- anion. It’s required for the synthesis and activity of the enzyme nitrate reductase and. vital for the process of symbiotic nitrogen (N) fixation by Rhizobia bacteria in root nodules. It’s also needed to convert inorganic phosphorus (P) to organic forms in the plant.

Molybdenum deficiencies show up as general yellowing or stunting of the plant, and more specifically in the marginal scorching and cupping or rolling of leaves. An Mo deficiency can also cause N-deficiency symptoms in legume crops such as soybeans and alfalfa, because soil bacteria growing symbiotically in legume root nodules must have Mo to help fix N from the air.

Molybdenum deficiencies occur mainly in acidic, sandy soils in humid regions. Sandy soils, in particular, more typically lack Mo than finer-textured soils. Molybdenum becomes more available as soil pH goes up, the opposite of other micronutrients. Since Mo becomes more available with increasing pH, liming will correct a deficiency if soil contains enough of the nutrient. However, seed treatment is the most common way of correcting Mo deficiency because only very small amounts of the nutrient are required.

Heavy P applications increase Mo uptake by plants, while heavy sulfur (S) applications decrease Mo uptake. Applying heavy amounts of S-containing fertilizer on soils with a borderline Mo level may induce Mo deficiency.

Excessive Mo is toxic, especially to grazing animals. Cattle eating forage with excessive Mo content may develop severe diarrhea.

 

 

Symptoms of deficiency can vary across crop species, but similarities exist for how nutrient insufficiency impacts plant tissue color and appearance. Nutrient deficiencies are commonly associated with the physical location on the plant

(i.e., whether the symptoms are primarily observed on older versus newly formed plant tissue), but these symptoms can spread as the severity of the deficiency progresses.

Organic Fertilizers

Sooner or later, every gardener discovers that for good results — whether in the vegetable garden, perennial border, or lawn — replenishing soil nutrients is necessary. And one of the key choices is whether to use organic or synthetic fertilizers. Synthetic fertilizers are manufactured. Organic fertilizers are derived from plants and animals, and from naturally occurring mineral fertilizers.

Why Use Organic Fertilizers?

One advantage of organic fertilizers is that their nutrients are doled out as a steady diet in sync with plant needs. Because the nutrients come from natural sources, a portion of them may be temporarily unavailable to plants until released by a combination of warmth and moisture — the same conditions plants need to grow. Released slowly, the nutrients from organic fertilizers are unlikely to burn plant roots or be leached away by water. And a single application may last a whole growing season.

You also might choose organic fertilizers for philosophical or environmental reasons. Organic fertilizers generally place fewer demands on energy resources, and they offer opportunities to recycle “garbage”.

The more concentrated a fertilizer (even an organic one), the less organic matter it contains. Fertilizers containing high concentrations of nitrogen, when used alone, can actually deplete soil organic matter, so if you use any such fertilizer, apply plenty of bulky organic matter, too. Dig materials such as straw, peat, compost, and leaves into the soil, or lay them on as mulch.

Naturally occurring mineral fertilizers are organic in the “not-synthetic” sense, but because they don’t contain organic matter, they’re not included in this list. Among them are Chilean nitrate, rock phosphate, greensand, and sulfate of potash magnesia.

Synthetic fertilizers do have some advantages. They cost less, are easier to transport, and are more uniform in nutrient content. All but controlled-release synthetic fertilizers are more quickly available to plants than organic fertilizers.

Why fertilize? Fertilizers are necessary make up for nutrients that are naturally carried down into the groundwater by rainfall, carried off into the air as gases, and carried into the kitchen by you. At least 16 nutrient elements are necessary for plant growth, but plants need three — nitrogen, phosphorus, and potassium (referred to by the elemental symbols N, P, and K) — in relatively large quantities. Most soils contain large reserves of the other 13 nutrients — especially calcium, magnesium, sulfur, iron, zinc, and manganese — that might also hitchhike along when you fertilize with “the big three.”

The only way to know for sure if your garden requires fertilizers is to have the soil tested. The cooperative extension services in most states test garden soil for a nominal fee. Also check telephone directories for “soil testing laboratories.”

When to Apply. The best times to apply organic fertilizers are early spring and fall — or even a few months — before planting, because that allows time for soil microbes to digest the organic matter and transform nutrients into forms plants can use.

How to Apply. When you apply organic fertilizers, there’s no need to dig them deep into the soil. Plants’s feeder roots are mostly near the soil surface, and low oxygen levels deep in the soil would retard microbial growth, slowing nutrient release from organic fertilizers. Make an exception to that no-dig rule if a soil test shows that phosphorus levels are low. This nutrient moves very slowly, so the only way to spread it quickly through the root zone is to mix it into the top 6 to 12 inches of soil.

Always wear a dust mask when you apply bonemeal, guano, or any other type of fertilizer that’s dusty. All dusts are potential lung irritants.

How Much to Apply. The actual amount to apply will vary, depending on the results of a soil test and the rate of nutrient release from a particular fertilizer. A rough rule is: Apply approximately 2 pounds of actual nitrogen (100 pounds of 10-10-10 contains 10 pounds of “actual” nitrogen) per 1,000 square feet, or 0.2 pounds per 100 square feet. Apply the other key nutrients plants take from soil — phosphorus and potassium — at about one-tenth this rate, unless a soil test specifies otherwise.

In catalogs and garden centers, you can find many different kinds of organic fertilizers. Other kinds are either custom blends, or materials that are available in limited quantities or only regionally. All fit into one of the basic categories — plant, animal, compost, or manure — that are further described below.

Plant Substances or By-products. Fertilizers that are plant substances or by-products are often rich in nitrogen, sometimes in potassium. These fertilizers can be considered renewable resources, but you should take into account the resources that may have been needed to grow as well as process or transport them. Some, such as beet pulp and cottonseed meal, are by-products of other industries.

  • Alfalfa meal and pellets contain nitrogen, phosphorus, and potassium. Some rose growers report good results when it is used as a mulch.
  • The dried, shredded remains of sugar beets after the juices and sugars are extracted are sold as organic fertilizer. They are rich in nitrogen.
  • Corn gluten is a high-nitrogen fertilizer with the unique ability to inhibit germination of seeds. With it you can feed your lawn and prevent crabgrass at the same time.
  • Cottonseed meal is made from the remains of cotton seeds after the oil is pressed out. It is a high-nitrogen fertilizer, but some growers have concerns about pesticide contamination of the meal. Cotton is a heavily sprayed crop, but pesticide-free cottonseed meal is available.
  • The extracts or pulverized parts of several seaweeds and kelp are good sources of minerals, potassium, and sometimes nitrogen. Follow application directions carefully when spraying on leaves, because sea plants can affect plant growth when sprayed directly on leaves.
  • Soybean meal is a high-nitrogen fertilizer that’s very similar to its better-known cousin, cottonseed meal. For the best price, look for it at animal feed-supply stores.

Animal processing by-products. Industries such as dairy farming and meat processing generate waste materials that are dried or minimally processed into fertilizers. None of these materials is derived from “certified organic” animals.

  • Blood meal is a rich source of nitrogen that is quickly available, so use with care.
  • Bonemeal is a rich source of phosphorus and calcium, and it supplies moderate amounts of nitrogen. “Steamed” bonemeal has less nitrogen but somewhat faster nutrient availability than “raw” bonemeal.
  • Fish products can be fairly rich in nitrogen, phosphorus, and potassium, but read the labels because nutrient concentrations vary.

Composts. These are the “Cadillacs” of organic fertilizers. Although making compost from a variety of raw materials is possible, the finished products are remarkably similar in their final concentrations of nitrogen, phosphorus, and potassium. Composts generally contain a good balance and wide spectrum of nutrients, and they’re rich in humus — so rich in humus, in fact, that their actual nutrient concentrations are relatively low.

Composts are available commercially or can be homemade. They can be used along with other fertilizers. Ingredients in commercial composts include various kinds of animal manures and lawn and garden wastes. Homemade fertilizer is a way to deal with “waste” and make fertilizer simultaneously — and you always know what ingredients went into the finished product.

Manures. Manures used as organic fertilizers are derived from humans, animals, and in one case, insects; manures are available fresh or dried; however, use composted manure whenever possible.

The composition of various manures vary not only with the kind of animal source, but also with the age of the animal, the bedding, and method of manure storage and application.

  • Cow manure is low in nutrients, but plants can absorb them moderately quickly.
  • Manure from seabirds or bats are rich in nutrients, but not in organic matter. Highly soluble and quickly available nutrients are useful early in season to stimulate vegetative growth. But be careful: high-nitrogen guanos may burn plants. Several types are available: Texan bat (10-4-2), Ancient seabird (0-12-1), and Peruvian seabird (14-11-2) are examples. All guanos can be mixed with water, steeped, and applied as a liquid.
  • Commercially available insect manure, cricket manure, is relatively nutrient-rich.
  • Poultry manure is relatively high in nitrogen, phosphorus, and potassium.
  • Composted sludges are rich in slowly available nitrogen. If industrial wastes are included, contaminants, such as heavy metals, are present. Though approved for vegetable gardening by the Environmental Protection Agency, these fertilizers are not acceptable for organic gardening.
  • Worm castings are similar to compost in their composition and are equally easy to produce at home. Because nutrient levels are so low in worm castings, they are — like compost — considered more a soil amendment than a fertilizer.

Much of the benefit of organic fertilizers comes not from the nutrients, but from the organic matter — the bulk — the fertilizers contain. Among other benefits, organic matter helps soils hold water and air, makes nutrients already in the soil more available, and helps prevent diseases.

Don’t spurn organic fertilizers that are low in nutrients, because they’re rich in organic matter that turns to valuable humus in the soil.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

error: Content is protected !!