Final answer:
Enriching the soil with compost is a practice used in sustainable farming that improves soil fertility and reduces the need for chemical fertilizers.
Step-by-step explanation:
A practice that might be used in sustainable farming is enriching the soil with compost. Composting involves the decomposition of organic materials such as food waste, leaves, and grass clippings to create nutrient-rich compost that can be added to the soil.
This improves soil fertility, promotes the growth of healthy plants, and reduces the need for chemical fertilizers. It also helps to maintain the biological integrity and health of the soil, protecting it from degradation.