Fertilizers, mulches, height of cutting, and fire are examples of:

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

Answer: (D)

Cultural control focuses on altering management practices to suppress pests or weeds by changing the environment in which they grow. Fertilizers affect nutrient availability to favor the desired vegetation, which can outcompete unwanted species. Mulches modify the soil surface, reducing weed germination, conserving moisture, and stabilizing temperature. The height of cutting changes canopy cover and light penetration, influencing which plants dominate and how aggressively weeds can establish. Prescribed fire is used to reset plant communities, reduce woody encroachment, and manage seed banks in some ecosystems. These approaches modify the growing conditions or disturbance regime rather than directly killing pests with chemicals, releasing natural enemies, or physically removing pests, so they’re categorized as cultural control.