Question

Why is chemical method of controlling paste not used ?

Answer 1

chemical control is based on substances that are toxic poisonus tp the pests involved when chemical pesticides are applied to protect plants from prest diseases or overgroth by weeds

Answer 2

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Chemical methods of controlling pests are discouraged nowadays as they affect the quality of soil and crops also leaving soil infertile and crops dangerous for consumption. Indeed, biological pesticides are encouraged these days.