Browse on keywords: tillage erosion
Search results on 05/21/13
5141. Peterson, C.L., E.A. Dowding, and R.W. Harder. 1979. Chisel-Planter. A minimum tillage system for winter wheat.. ID Agr. Expt. Sta. CIS #476.
Drill is 11' wide, weighs 8700 lb when full; describes construction and operation of the drill; field results.
7777. Zingg, A.W. and C.J. Whitfield. 1957. A summary of research experience with stubble mulch farming in the western states.. USDA Technical Bull. 1166.
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.
302. Allmaras, R.R., S.C. Gupta, J.L. Pikul and C.E. Johnson. 1979. Tillage and plant residue management for water erosion control on agricultural land in eastern OR.. Effects of tillage and crop residue removal on erosion, runoff, a.
Tillage and plant resiude management for water erosion control on agricultural land in eastern OR.
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.
1239. Carter, L.S. and G.R. McDole. 1942. Stubble mulch farming for soil defense.. USDA Farmers' Bulletin 1917.
Discusses the value of stubble mulch tillage for the various parts of the U.S. Shows a number of implements to achieve good residue cover, including noble blades, a rotary subsoiler that leaves surface pockets, modified moldboard plows.
1755. Duley, F.L. and J.C. Russel. 1942. Using crop residues for soil defense.. USDA Misc. Publ. 494.
Describes various tools for subsurface tillage, leaving residue on the surface.
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
2294. Greenwalt, R.N., J.L. Pikul Jr. and J.F. Zuzel. 1983. Soil frost penetration under conventional and conservation tillage.. OR Agr. Expt. Sta. Special Report #680, p.20-23.
This research evaluates the effects of surface crop residues and tillage practices on overwinter soil temperatures and soil frost penetration. Soil frost penetration was significantly greater in the fall-plowed than in the no-tilled winter wheat plots because surface residues in the no-till treatment acted as a thermal insulator creating warmer soil temperatures when compared to the bare soil surface of the fall plow plot. Frost penetration was three times greater in depth and frozen soil layers were present twice as long in the conventional tillage system as compared to the conservation tillage system. Because infiltration rates can be greatly reduced when frozen soil layers are present, nearly all precipitation on frozen soil runs off or evaporates. Those tillage management techniques which leave adequate crop residues on the surface should be considered as a means to reduce or eliminate soil losses caused by soil erosion. T: Depth of soil frost penetration in fall-plow and no-till plots. Comparison of soil temperatures between the fall-plow and no-till treatments.
4284. McDole, R.E. and S. Vira. 1980. Restricted summer fallow for soil erosion control under dryland crop production.. ID Agr. Expt. Sta. CIS #522.
Summer fallow for moisture conservation needed only where rainfall <16"; minimize soil pulverizing; use chem. fallow where possible.