What agricultural practice can help combat soil erosion in hilly areas?

Contour cropping is an effective agricultural practice for combating soil erosion in hilly areas. This method involves planting crops in rows that follow the natural contours of the land, as opposed to planting straight rows up and down a slope. By following the land's natural shape, contour cropping helps to slow down water runoff during rainfall events, allowing more water to infiltrate the soil rather than flowing over the surface. This not only reduces erosion but also helps to retain moisture in the soil.

In addition, the furrows created by contour planting can act as natural barriers that trap soil particles and organic matter, further preventing erosion. This practice enhances soil structure and fertility over time, contributing to sustainable agricultural productivity while preserving the landscape.

Other options, such as planting only grass or using monocultures, may not effectively address the unique challenges posed by hilly terrain. Burning off dead plant material can actually increase erosion by disturbing the soil and removing protective cover. Therefore, contour cropping stands out as the best choice for minimizing soil erosion in hilly areas.