Which soil management practice promotes better soil health?

• A. Minimizing crop diversity
• B. Implementing crop rotation
• C. Frequent tilling of soil
• D. Excessive chemical application

Answer: (B)

Implementing crop rotation promotes better soil health by enhancing the diversity and resilience of the soil ecosystem. This practice involves alternating different types of crops in a specific sequence over time, which can break pest and disease cycles, improve soil structure, and enhance nutrient availability. Different crops have varying root structures and nutrient requirements, allowing for more efficient use of soil resources and reducing the risk of nutrient depletion.

Additionally, crop rotation can contribute to better soil microbial activity and overall biodiversity, which are key components for maintaining soil health. For example, legumes can fix nitrogen in the soil, benefiting subsequent crops that may require more nitrogen. By introducing various plants in the rotation, the soil benefits from reduced erosion and enhanced organic matter, contributing to improved fertility and structure.

In contrast, minimizing crop diversity, frequent tilling, and excessive chemical application can lead to soil degradation, reduced fertility, and a decline in beneficial soil organisms, thus worsening soil health over time.