Which of the following actions helps in maintaining healthy soil?

Crop rotation is a practice that significantly contributes to maintaining healthy soil. This technique involves alternating the types of crops grown in a particular area from season to season or year to year. By doing so, crop rotation helps prevent nutrient depletion, as different crops have varied nutrient requirements and contributions to the soil. For instance, leguminous plants can fix nitrogen, enriching the soil and benefiting subsequent crops.

Additionally, crop rotation helps disrupt pest and disease cycles since different crops may repel or attract different sets of pests. This variability can also lead to greater biodiversity in the soil ecosystem, which is essential for soil health. Overall, crop rotation promotes a balanced nutrient profile, improves soil structure, and enhances microbial activity, all of which are critical for maintaining healthy soil.