What is one of the primary strategies for preventing soil erosion?

Maintaining crop residue cover is a primary strategy for preventing soil erosion because it serves as a protective barrier on the soil surface. When crop residues, such as leftover plant materials from previous harvests, are left in place, they reduce the impact of raindrops on bare soil, which can dislodge soil particles and lead to erosion. Additionally, this cover helps to improve water infiltration and reduce runoff, making it less likely that soil will be washed away during heavy rains.

By keeping residue on the field, it not only protects the soil but also contributes to soil health by enhancing organic matter content and promoting beneficial microbial activity. This method is an essential practice in sustainable agriculture, as it helps to maintain soil integrity, prevents the loss of topsoil, and ultimately supports productivity in the long term.