What does the term "green manures" refer to?

The term "green manures" specifically refers to cover crops that are cultivated primarily to enhance soil health, fertility, and prevent erosion. These crops are typically grown between main agricultural crops and are later tilled back into the soil before they can mature. This practice contributes organic matter to the soil, improves soil structure, decreases erosion, and enhances nutrient cycling, thereby boosting the overall fertility of the soil.

Green manures can also help suppress weed growth and can reduce the need for chemical fertilizers due to the natural nutrients they contribute. This is an important aspect of sustainable agriculture, as it aligns with practices that protect and improve the environment while also supporting crop production.

Understanding the role of green manures as a sustainable agricultural practice highlights their importance in enhancing soil quality and fertility, which is why this answer is the most accurate.