Which of the following is an example of biological controls of IPM?

• A. Mechanical controls of IPM
• B. Biological controls of IPM
• C. Cultural controls of IPM
• D. Chemical controls of IPM

Answer: (B)

Biological controls in IPM rely on living organisms to reduce pest numbers. This means using natural enemies or their products to keep pests in check, such as releasing beneficial insects like lady beetles or lacewings that feed on pests, introducing parasitic wasps that attack pest life stages, or applying microbial agents like Bacillus thuringiensis that target caterpillars. These approaches are designed to suppress pests with minimal environmental impact and often work alongside other strategies in IPM.

Mechanical controls use physical methods (barriers, traps, hand-picking); cultural controls involve changing practices (crop rotation, sanitation, timing); chemical controls rely on pesticides. So the example that fits biological controls is using living organisms or their products to manage pests.