Preventive measures and biological control methods should be preferred for crop protection because excessive use of chemical pesticides causes environmental pollution and harms both plants and animals.
Preventive measures help protect crops by ensuring proper soil and seed preparation, timely sowing, intercropping, mixed cropping, and the use of resistant crop varieties. These methods reduce the chances of pest infestation naturally.
Biological control methods involve using bio-pesticides, which are less toxic to the environment. For example, Bacillus thuringiensis (Bt) is a natural insect pathogen that effectively kills a wide range of insect larvae without harming beneficial organisms.
