Coupon Accepted Successfully!


Use of Pesticides

Large-scale damage of plants by pests and diseases is controlled by using pesticides. These may be fungicides and insecticides and yet other specific chemicals that destroy bacteria and viruses. They are usually sprayed on plants by hand-operated machines or from aircraft flying low over fields that cover vast areas.

The use of pesticides requires great care, as they are potential killers of living organisms. Although pesticides are specifically meant for destroying pests, their indiscriminate use can cause damage in more than one way.

One of the major precautions in everyday life is to wash all vegetables and fruits thoroughly with water before using them. Pulses and grains should be washed before cooking. Thoughtless application of pesticides and also fertilizers can contribute towards soil and water pollution. This demerit can be reduced considerably with proper knowledge and its application to achieve effective food production. The useful impact of pesticides is evident from the substantial increase in their use from 100 tonnes in 1960 to 75,000 tonnes in the later years.


Nutritional deficiency and diseases are caused when the soil is deficient in one or more of the essential nutrients, namely N, P, Mg, etc. The symptoms appear in the form of necrosis (dying tissues), chlorosis (lack of chlorophyll; leading to yellowing), curling or twisting of leaves and so on. These are easier to check and are controlled by applying suitable amounts of chemical fertilizers. The symptoms gradually disappear as the nutrient is replenished and plants show healthy growth.

Test Your Skills Now!
Take a Quiz now
Reviewer Name