What is the term for using living organisms to control undesirable vegetation?

• A. Mechanical Control
• B. Biological Control
• C. Chemical Control
• D. Cultural Control

Answer: (B)

Biological control uses living organisms to manage undesirable vegetation. It relies on natural enemies—such as insects, pathogens, or grazing animals—that feed on or attack the target weeds, reducing their abundance and spread. This approach can be highly specific and environmentally friendly, offering long-term suppression with minimal chemical input. For example, releasing a weed-feeding insect that only harms that weed or using goats to graze on young weed growth are typical biological control strategies. This is different from mechanical control, which relies on physical removal; chemical control, which uses herbicides; and cultural control, which changes practices like crop rotation or mowing schedules to reduce weed pressure.