The correct answer is: d) All of the above
Crop rotation is the practice of growing different types of crops in the same field in successive seasons. This helps to maintain soil fertility, control pests and diseases, and improve soil structure.
Maintaining soil fertility
Crops take up nutrients from the soil as they grow. When the same crop is grown in the same field year after year, the soil can become depleted of nutrients. Crop rotation helps to replenish these nutrients by growing different types of crops that require different nutrients.
Controlling pests and diseases
Pests and diseases can build up in the soil over time, especially if the same crop is grown in the same field year after year. Crop rotation helps to break the cycle of pests and diseases by growing different types of crops that are not susceptible to the same pests and diseases.
Improving soil structure
Crop rotation helps to improve soil structure by adding organic matter to the soil. Organic matter helps to improve drainage, aeration, and water retention in the soil.
In addition to the above, crop rotation can also help to reduce erosion, improve water quality, and increase biodiversity.