How to Prevent & Control Soil Erosion
Soil erosion can be prevented using the following methods;
1. Mulching: This involves covering the ground with dried grasses. Dried grasses, spread over the surface of the soil, reduce the impact of raindrops striking the soil and cover it from the wind.
2. Planting of Cover Crops: Planting of cover crops like mucuna bracteata, buckwheat, rye, wheat, corn, barley, oats, etc, prevent water and wind from carrying soil particles away.
3. Crop Rotation: On sloping lands, crop rotations can help reduce soil erosion. Plants, like corn and grain crops, remove nitrogen and nutrients from the soil. Rotation of these plants, with alfalfa and other legumes, will enable the land to restore the soil nutrients, lost through absorption by the plants.
Crop rotation allows the land to regenerate and rejuvenate its self-nutrients, without having to apply more nutrients through the use of fertilizers.
4. Contouring of loping ground: This involves making ridges across the slope to prevent the downhill flow of water.
5. Strip Cropping: Involves planting crops, that provide vegetation cover for the soil, in alternate strips across a slope.
6. Planting of Shelter Belts: A shelterbelt, or windbreaker, is a planting usually made up of one or more rows of trees or shrubs, planted in such a manner as to provide shelter from the wind, and to protect soil from erosion.
How to Control Soil Erosion:
1. Afforestation: This involves the planting of trees in exposed land to prevent wind and soil erosion.
2. Avoid bush burning and overgrazing.
3. Construction of water channels such as ditches, drainage, or dams across, gullies.