Browse on keywords: erosion tillage soil quality
Search results on 10/23/18
5030. Papendick, R.I.. 1984. Soil conservation and management in the Palouse. p. 234-244.. IN: B.R. Bertramson (ed.). History of the Dept. of Agronomy and Soils, WSU, Pullman, WA.
An historical overview.
5899. Rodman, A.W.. 1988. The effect of slope position, aspect, and cultivation on organic carbon distribution in the Palouse.. MS Thesis, Dept. of Agronomy & Soils, WSU, Pullman, WA.
Soil organic carbon (OC) was studied at 4 sites, native and cultivated. At the native site aspect had the greatest influence on OC levels. At the cultivated site OC distribution is due to water and tillage erosion. All topsoil had been eroded from south slopes. Perennial grass rotations had added OC above and below the surface while reducing OC loss from erosion and oxidation. Strip cropping and uphill plowing resulted in a greater depth of OC. T: Average surface organic carbon values by slope position.
6684. Stephens, D.E.. 1944. Effect of tillage and cropping practices on runoff, erosion, and crop yields in the wheat growing areas of Washington, Idaho, and Oregon.. USDA-SCS. Conservation practices on wheat lands of the Pacific Northwest..
An excellent summary of the dryland experiment station research in WA, ID and OR. Describes research on stubble mulching, tillage implements, crop rotations, fallow, etc. The use of sweetclover or alfalfa-grass were encouraged. T: yield, runoff, soil loss by tillage, rotation, fertilizer.