Why is crop rotation beneficial in pest and disease management?

• A. It Increases Pesticide Use
• B. It Reduces Soil Biodiversity
• C. It Degrades Soil Structure
• D. It Disrupts Pest and Disease Life Cycles and Improves Soil Health

Answer: (D)

Crop rotation disrupts pest and disease life cycles and improves soil health. By alternating different crops, pests and pathogens that rely on a single host find the preferred food source absent in part of the year, so their populations decline and the amount of disease-inoculum in the soil is reduced. Different crops also vary in their nutrient needs and root structures, which boosts soil microbial diversity, improves soil structure, and increases organic matter. This healthier soil supports beneficial organisms and creates conditions less favorable for pests, lowering pest pressure and disease occurrence. It also often reduces the need for pesticides.