How does crop rotation benefit pest management?

• A. It increases yield per crop
• B. It disrupts pest life cycles
• C. It requires fewer resources
• D. It eliminates the need for pesticides

Answer: (B)

Crop rotation benefits pest management primarily by disrupting pest life cycles. When different crops are planted in succession in the same field, it creates an environment that is less favorable for pests and diseases that may have adapted to a particular plant species. Many pests are reliant on specific crops for food and breeding; by rotating these crops, their populations are reduced because their primary food source is no longer consistently available. This interruption prevents pests from establishing a stronghold and reduces their numbers over time, resulting in less damage to crops and the need for chemical interventions in pest control.

The other options, while relevant to agricultural practices, do not directly address the specific role of crop rotation in managing pests. Increased yield and fewer resources can be benefits of good agricultural practices overall, and while crop rotation can indeed contribute to these outcomes, they are not the core reason it helps with pest management. Similarly, while crop rotation can reduce the need for pesticides, it does not entirely eliminate that need, especially in scenarios where pests are particularly invasive or adaptable.