WSU Tree Fruit Research & Extension Center

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Saturday, June 23, 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.

216. Allmaras, R.R.. 1983. Soil conservation: Using climate, soils, topography and adapted crops information to select conserving practices.. Dryland Agriculture. Am. Soc. Agron., Monograph #23, pp139-153.
Systematic use of land resource information is necessary to proper selection of conservation practices. This chapter shows the combined use of resource information and soil erosion equations to proj ect soil erosion hazard and associated types of ersion control pra ctices at specific locals. Biophysical "land resource regions" ar e used to type land areas. T: Production of wheat straw in select ed land resource regions.

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