Chemicals and fertilizers

Fertilizer application methods. There are three main application methods for liquid fertilizers Direct soil application, mechanical spread by broadcasting or deep soil placement by injection. Fertigation: Injecting the fertilizer solution with the irrigation water. Foliar spray application Principles of Fertigation This is the most common method for the application of liquid fertilizer solutions and disolved solid water soluble fertilizers. The concentrated fertilizer solution is injected into the irrigation water, mixes with it and enters the soil during irrigation. This is the most efficient method for the fertilization of irrigated crops, specially for those irrigated with drippers, micro- jets and micro- sprinklers. A range of injection accessories is available for fertigation. How to prepare a fertilizer solution from a solid, water soluble fertilizer. Gatit fertilizers should be dissolved in three volumes of water according to the following procedure. For example: ...

Organic gardening involves a system that centers around healthy soil - a mixture of sand, clay, silt, and decomposed organic material (humus). But even when the soil is well-balanced and healthy, plants benefit from additions of specifically formulated organic fertilizers. You can buy prepared organic fertilizers, or blend individual fertilizer ingredients for specific purposes, such has high nitrogen blends for leafy greens or high potassium blends for root crops. Since the following organic fertilizer recipes all involve dry ingredients, they can be blended ahead of time and stored in labeled plastic containers with lids. Most gardening centers will have the individual ingredients, but if you can't buy them locally, they are available from online sources, such as Whitney Farms, which sells only organic products. For all of the following recipes, make any amount using the volume ratios given. Use anything from a yogurt container to a lemonade pitcher as a scoop. Each full scoop eq...

1. What is biofertilizer? Biofertilizers are ready to use live formulates of such beneficial microorganisms which on application to seed, root or soil mobilize the availability of nutrients by their biological activity in particular, and help build up the micro-flora and in turn the soil health in general. 2. Why should we use biofertilizers? With the introduction of green revolution technologies the modern agriculture is getting more and more dependent upon the steady supply of synthetic inputs (mainly fertilizers), which are products of fossil fuel (coal+ petroleum). Adverse effects are being noticed due to the excessive and imbalanced use of these synthetic inputs. This situation has lead to identifying harmless inputs like biofertilizers. Use of such natural products like biofertilizers in crop cultivation will help in safeguarding the soil health and also the quality of crop products. 3. What are the benefits from using biofertilizers? Increase crop yield by 20-30%....

Forms For Concrete Work General To use concrete in making any object, it is necessary that the material, while in a plastic state, be confined in e form or mold which has an interior surface and shape corresponding to that of the object which is to be made. Therefore forms or molds are the receptacles in which a concrete mixture is placed immediately after mixing so that when hardened the concrete will assume the shape desired or intended. Forms for concrete steps. Care should be taken to have the ground well compacted where steps are to rest. The side walls, or ramps, can be made first or last as desired. A 1:2:4 concrete mixture should be used throughout. The concrete should be wood floated on the step treads instead of finished with a steel trowel, Using a wood float will give a surface that will provide a good foothold. Types Of Forms Forms for concrete may be made wholly of wood, or of wood metal lined, or wholly of metal, or in some cases of plaster of Paris....

Organic fertiliser is obtained from various chemicals. It contains range of nutrients at different ratio, making it effective for plants. These are easily absorbed in plant systems. Organic Fertiliser are available as solid spray dried powder or liquid solution. This powder if fully soluble in water and can be dissolved in water to prepare formulation of required concentration HUMIC ACID: Application of humic acids has several benefits and agriculturists all over the world are accepting humic acids as an integral part of their fertilizer program. Biochemical active and plant responsive humic substance are naturally occurring humic acids. They can be applied directly to the plant foliage in liquid form or to the soil in the form of granules alone or as fertilizer mix. Benefits of Proper Application of Humic Acid increase soil fertility, Increase humus contents, Effectively chelates meta...

Overview Potassium is one of the alkali metals. The alkali metals are the elements that make up Group 1 (IA) of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. The alkali metals also include lithium, sodium, rubidium, cesium, and francium. They are among the most active metals. Potassium is so active that it never occurs free in nature. It always occurs in compounds, combined with other elements. It was first prepared in pure form in 1807 by English chemist Sir Humphry Davy (1778-1829). Davy used a new method of isolating elements that he had invented, electrolysis. In electrolysis, an electric current is passed through a molten (melted) compound. The electrical current breaks the compound into its elements. (See sidebar on Davy in the ...

FERTILIZERS : Growing plants are nourished by certain constituents which they absorb from the soil and air. The chief elements drawn from tho soil are potassium, calcium, sulphur, phosphorus, and nitrogen; other elements such as silicon, iron, sodium, magnesium, and chlorine are taken up to a less degree. The natural weathering of the minerals in the ground usually provide the elements necessary to plant life; but the supply of potassium, phosphorus, and nitrogen may be insufficient and become exhausted by frequent repetitions of the same crops on the same land. The soil becomes less productive, and finally the crops are failures. To supply this continued drain on the soil, fertilizers are employed. The natural fertilizers, barn-yard manure, urine, and decomposing vegetable mould or muck, will not be considered here, as they need little or no treatment before use. By artificial fertilizers we understand those manurial substances, prepared from materials which need some special treatmen...