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Restoration of fertility
The fertility of the topsoil can be restored by taking the following measures. a) Regular use of manures and fertilizers can replenish the minerals used by the crops. Green manuring can also be done. b) Crop rotation should be practiced c) New techniques of applying water benea..
Replenishment of soil by addition of manure and fertilizers
The farm yard manure or organic manure or bio fertilizers and inorganic fertilizers supply the necessary plant nutrients to the soil. Thus, application of such materials increases the nutrient value of the soi..
Synthetic organic compounds
Pesticides, detergents, chemical dyes and other industrial chemicals and their waste constitute synthetic organic compounds. When present in water, these chemicals can act as toxic poisons for plants, animals and humans. Such chemicals enter the hydrosphere either by usage, by accidental..
Organic Chemistry Introduction
. Most of the drugs and pharmaceuticals are also organic compounds. In agriculture too, organic chemistry is well represented. Fertilizers like urea, pesticides like DDT, malathion and gammaxene, and plant growth regulators are all organic chemicals. Among va..
Question 2
Question: List the measures adopted to control pollution. Answer: Pollution can be controlled by adopting the following measures: Solid organic wastes such as garbage and faecal matter should be changed into compost Garbage and silt of drainage may also be used ..
Soil Erosion
Land is also a precious resource. Land is needed for agriculture and occupation. Land is under pressure due to increasing population. Land for agriculture has to be fertile in order to be able to support a good crop. The fertility of land lies in the quality of the soil. Soil is..
Forests and Wild Life
. Even the bacteria which cause deadly diseases and food poisoning on one hand help in aiding digestion produce dairy products like milk and yogurt (curds) and help in decomposing huge amounts of waste and dead matter, fertilizing the soil with nitrogen. One of the main aims of conservati..
Green Manure
Green manuring is the practice of growing and ploughing in, the green crops, into the soil. It is a cheap and effective method that increases soil fertility as it can supplement farmyard and other organic manures and is more cost effective. Green manures add nitrogen and o..
Agriculture
The pH of the soil is very important for having proper crop yield. The soils get buffered due to the presence of salts such as carbonates, bicarbonates, phosphates and organic acids. The choice of fertilizers depends upon pH of the soi..
Soil
The word soil is derived from the Latin word solum meaning earthy material in which plants grow. The science which deals with the study of soil is called Soil Science, Pedology (pedos = earth) or edaphology (edaphos = soil). The process of formation of soil is called pedogenesis. A soil complex is..
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