Grass strips should be wide enough to mow across the hill easily as well as wide enough to effectively reduce erosion. The earthen ridges built around a hillside on the contour cut a long slope into shorter slopes, preventing water from building to a highly erosive force. Some terraces are seeded to grass, which provides erosion control and a nesting area for birds. Terraces are often used in combination with other conservation practices to provide more complete soil protection. Stripcropping is a common erosion control practice on many farms.
Farmers often alternate strips of corn or soybeans with strips of hay.
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