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Management Practices for Erosion and Sediment Control in Irrigated Agriculture

by D. L. Carter, USDA, Kimberley, ID, USA,
C. E. Brockway, (M.ASCE), USDA, Kimberley, ID, USA,
K. K. Tanji, USDA, Kimberley, ID, USA,



Document Type: Proceeding Paper

Part of: Water Forum '86: World Water Issues in Evolution

Abstract:

Basin irrigating rice can reduce suspended sediment loads in water because the basins serve as sediment retention basins. Furrow erosion causes significant suspended sediment loads in return flows in California, but the problem is much more severe in Idaho. Topsoil redistribution by furrow erosion and sedimentation has reduced potential crop yields by approximately 25%. Several sediment loss control practices have been developed and evaluated, and are effective, but costs deter their application. Research is presently directed toward controlling erosion along irrigation furrows. Methods to increase soil cohesion and utilize residues in minimum tillage and no-till systems have high potential for controlling erosion and sediment loss during the next decade.

Subject Headings: Sediment | Erosion | Suspended sediment | Retention basins | Suspended loads | Soil loss | Retaining structures | United States | California | Idaho

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