WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Saturday, January 20, 2018

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187. Allamaras, R.R., S.C. Gupta, J.L. Pikul and C.E. Johnson.. 1980. Soil erosion by water as related to management of tillage and surface residues.. USDA-ARS, Oakland, CA..
Soil erosion by water was estimated for combinations of tillage and residue handling, terracing, and contouring. The Universal Soil Loss Equation was applied for conservation planning. Slope steepness primarily determined which combination of management practices was needed. Erosion could not be held below tolerance values for wheat-fallow sequences on slopes exceeding 20%. T: Distribution of K values within cropland of study area. Cover and management (C) values for study area. Tillage operations in wheat-fallow rotation, and associated reduction in surface residue.

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