Question

Why should preventive measures and biological control methods be preferred for protecting crops?

Answer 1

Preventive measures and biological control methods should be preferred for protecting crops because excessive use of chemicals leads to environmental problems. These chemicals are also poisonous to plants and animals. Preventive measures include proper soil and seed preparation, timely sowing of seeds, intercropping and mixed cropping, usage of resistant varieties of crops, etc. On the other hand, biological control methods include the usage of biopesticides that are less toxic to the environment. Examples of biopesticides are Bacillus thermogenesis, an insect pathogen that kills many insect larvae. Therefore, both preventive and biological control methods are considered eco-friendly crop protection methods.