Question

4. Why is it preferable to adopt preventive measures and
biological control methods for the protection of crops?​

Answer 1

Answer:

Because biological methods will helpful for and crop growth will be more avoiding weeds and biological method useful for killing insect etc

Answer 2

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.