Chapter 12

NCERT
Class 9
Science
Solutions
1. Why should preventive measures and biological control methods be preferred for protecting crops?

Question:

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

Answer:

Preventive measures are good for the protection of the crop because they are easy to adopt and there is no cost in it, biological control destroys pests and avoids crop damage. Although some expenditure has to be incurred in the pesticides, but if the pesticides are used within a limit then the cost will also be less and it will not have any side effects.

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