Crop rotation decreases the incidence of pests by

Assessment: WAEC SSCE - Agricultural Science - 2011 (Objective) Subject: Agricultural Science

Question 1 Report

Crop rotation decreases the incidence of pests by
Answer Details
Crop rotation decreases the incidence of pests by breaking the life cycles of pests. Crop rotation is the practice of growing different crops on a particular piece of land in a planned sequence over time. Different crops have different nutrient requirements and host different pests and diseases. Crop rotation interrupts the life cycles of pests and diseases by removing their hosts from the field, thereby reducing their populations. Pests and diseases that may have built up in the soil or on crop residues can be reduced or eliminated by growing crops that are not their hosts in the rotation. As a result, the likelihood of a pest or disease outbreak is reduced, and the overall health of the soil and crops is improved.
Read lesson note on Crop Diseases (JAMB)
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