Why should preventive and biological control methods be preferred for protecting crops
Answers
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 for 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.
Biological control methods include the usage of bio-pesticides that are less toxic for the environment.
Therefore, both preventive measures and biological control methods are considered eco- friendly methods of crop protection.
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Answer:
Diseases in plants are caused by pathogens. To get rid of pathogens, some preventive measures and biological control methods are used as they are simple, economic and minimise pollution without affecting the soil quality.