What agricultural technique is used to reduce water erosion by ploughing with the contours of the land?

Contour ploughing is an agricultural technique that involves ploughing along the contours of the land rather than in straight rows. This method is specifically designed to reduce water erosion on slopes by creating furrows that follow the natural shape of the land. When it rains, the furrows help slow down water runoff and allow it to infiltrate into the ground, reducing the speed at which it can erode the soil.

By following the land's contourlines, contour ploughing also helps to create natural barriers that trap soil and water, promoting better moisture retention and reducing the risk of losing valuable topsoil. This practice is particularly beneficial in hilly or sloped areas where erosion is a significant concern. The effectiveness of contour ploughing in preventing soil erosion is why it is considered an important sustainable farming practice.

The other options, while they may refer to various agricultural practices, do not specifically address the technique of ploughing along land contours for the purpose of reducing water erosion.