Browse on keywords: erosion tillage WA
Search results on 10/15/18
1819. Elliott, L.F. (ed.). 1987. STEEP - Conservation concepts and accomplishments.. Washington State Univ. Publ., 662pp..
A compilation of 48 papers covering: tillage and plant maagement; erosion and runoff predictions; plant design; pest management; socio-economic; integrated systems; technology transfer for cropping systems; 22 technical notes. T: many
1219. Caplan, A.J.. 1986. Cost return and relative soil loss comparisons of alternative tillage systems.. MS Thesis.
Minimum tillage is less expensive than conventional. No-till is most expensive due to high chemical inputs. In the low precipitation zone, minimum till was 1.19 times less expenxive than conventional. Annual peas/wheat in high precip. zone was 1.5 times less expensive with min-till than conventional.
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.
6946. University of Idaho. 1977. Priorities for erosion - sedimentation research in the Pacific Northwest.. ID Agr. Expt. Sta. Misc. Series #37.
Describes the background, current research and future needs, related to hydrology and erosion, soil and crop management, and socio-economic concerns.
6957. USDA. 1978. Palouse cooperative river basin study.. SCS, FS, ESCS - USDA.
Excellent summary of soil erosion problem and possible management approaches in the Palouse; extensive data on land use, soil erosion, future scenarios; history of agriculture in the area; bibliography.
7672. Wysocki, D.. 1989. Improving water infiltration in frozen soil.. STEEP Conservation Farming Update, Summer 1989, p.13-14..
Compared fall chisel versus standing stubble for water infiltration at 3 dates. No difference in July following harvest, much lower infiltration with stubble in December with 5" frost depth, no difference (low infiltration) in January with 14" frost depth. For chisel tillage to be effective, chisel marks must be open to the surface, and chisel fracturing should penetrate below the frost depth. Deeper chiseling at wider spacing, or subsoiling, may be an option.
7693. Yan, Ying. 1989. A model for predicting soil loss ratio and crop production in eastern Washington. M.S. Thesis, Dept. of Agronomy and Soils, WSU, Pullman, WA.
The model (SHUI) predicts soil erosion and crop production under different crop rotation, tillage operation, and crop residue management conditions. It simulates the soil-water budget, crop and root growth, top dry matter production, grain yield, and residue production and loss, and predicts the soil loss ratio. Validation data are included.
10406. Pan, W.L. and A.G. Hopkins. 1991. Plant development, and N and P use of winter barley. II. Responses to tillage and N management across eroded toposequences.. Plant Soil 135:21-29.
Winter barley was grown at three landscape positions of a representative toposequence in the Palouse region. Direct drilling (no-till) into crop residues increased yields by 16% over conventional tillage at an eroded ridgetop position, despite early season growth inhibition. Tillage system had no effect on grain production at other landscape positions that featured higher overall yields. Short-term benefits of no-till systems may be most evident at slope positions where water use is most limited.