Final answer:
Crop rotation is a practice that reduces the need for artificial fertilizer by improving soil nutrient levels and breaking cycles of pests, which thereby curtails the dependency on agrochemicals.
Step-by-step explanation:
The benefit of crop rotation is that it helps to reduce the need for artificial fertilizer. This agricultural practice involves the planned sequence of different crops over time on the same field. By rotating crops, such as cereal crops like corn and leguminous crops like soybeans, farmers can enhance soil nutrient levels and interrupt the life cycles of pests, thus decreasing the reliance on synthetic fertilizers. Crop rotation can also contribute to diversification and manage resources effectively. Furthermore, this ecological strategy aids in maintaining water quality by preventing the runoff of excessive nutrients or chemicals into water supplies.