agriculture in india crops soil

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 soil..

Reduced soil fertility Reduced nitrogen fixation Increased erodibility Larger loss of soil and nutrients Deposition of silt in tanks and reservoirs Reduced crop yield Imbalance in soil fauna and flor..

Radioactive phosphorus (P 3 2 ) is used in the study of metabolism of plants. Radioactive sulphur (S 3 5 ) helps to study advantages and disadvantages of fungicides. Pests and insects on crops can be killed by - radiations., - rays are used for preservation of milk, pota..

Crop yields remaining stagnant, pesticides polluting the eco-systems, increasing cost of fertilizers, reducing soil fertility, imbalance in host - parasite and predator - parasite relationships have pushed agriculture into dangerous mode. Scientists have looked back in..

Different types of crops with differing requirements are grown alternatively in the same soil. Leguminous crops such as pulses, peas, beans, grams, groundnuts etc are sown after the cereal crops such as wheat and maize etc. Wheat crop takes a great..

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 ..

Indiscriminate use of irrigation coupled with imbalanced use of fertilizers and poor drainage has caused salinity in more than 1 million hectare of agricultural land. This has rendered the soil unfit for production. Excess salts of sodium (NaCl, Na 2 SO 4 , Na 2 CO 3 ), calcium..

It is a method by which two or more different crops are grown together in the same soil. A mixed cropping of ragi with pigeon gram replenishes the soil because pigeon gram fixes the atmospheric nitrogen, which goes into the soil in the form of nitr..

Includes disturbance of surface soil in terms of its structure, chemical properties and biological activities due to agricultural activities such as cultivation of crops, irrigation, application of fertilizers and pesticide..