Most of the food crops are subjected to damage by insects and diseases. Large number of insects and diseases are recognized on every food crop. Control of insects and diseases is one of the great challenges posed to human knowledge.
Pesticides in general, make a class of chemicals used to control pests, which include insects, fungi, bacteria, weeds, rodents, mites etc. respectively. Each one is controlled by group of chemicals like insecticides, fungicides, bactericides, weedicides, etc.
Certain preventive measures can be adopted to protect crops from weeds, insects, mites, rodents and fungi. They are:
- Use of resistant varieties
- Optimum time of sowing the crops
- Crop rotation and cropping system
- Clean cultivation
- Summer ploughing
Rabi crops are more susceptible to insects and pests as against kharif crops as warm and humid climate is congenial for infestation. Control measures of the insect-pests of major crops