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Search results on 12/19/18
2918. Idaho Agr. Expt. Sta.. 1950. Annual Report. Id Agr. Expt. Sta. Bull. #280.
T: hay yields, economics
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
4546. Moore, W.B. and S.F. Miller. 1987. Off-site economic impacts of soil erosion. p. 633-641.. IN: L.F. Elliott (ed.). STEEP - Conservation Concepts and Accomplishments. WSU Publications..
Per ton off-site costs for erosion are estimated at $2.81 - $5.43. On-site costs are estimated at $1.27 - $3.04 per ton. This results in an estimated total erosion cost range of $4.08 - $8.47 per ton of soil or $48.96 - $101.64 per acre with a 12 T/ac erosion rate. Off-site impacts are to: reservoir capacity/navigation; road systems; municipal/industrial water; hydroelectric power; fishery habitat; flood damage/flood control. Estimated costs would be higher if impacts to recreation, irrigation and effects of fertilizer/pesticide residues were included. T: Potential off-site erosion impacts. Economic estimates of off-site erosion impacts study.
4931. Oldenstadt, D.L., R.E. Allen, G.W. Bruehl, D.A. Dillman, and E.L. Michalson. 1982. Solutions to Environmental and Economic Problems (STEEP). Science, 217(3):904-909.
Describes one model for organizing and mobilizing scientific resources to address the highly complex and costly problem of soil erosion in the PNW. With a USDA grant to the Agr. Expt. Sta.'s in WA, OR and ID, plus supplementary state and federal funds, STEEP awards intermediate-term grants (15yr) for research in 5 areas: tillage and plant management, plant design, erosion and run-off predictions, pest management, and socioeconomics of erosion control. Most projects require collaboration across disciplines, and, sometimes, a╚ross state boundaries. Results (after 6 yrs) indicate STEEP model might be applicable to other regions and problems.
5095. Pawson, W.W., O.L. Brough, J.P. Swanson and G.M. Horner. 1961. Economics of cropping systems and soil conservation in the Palouse.. PNW Technical Bull. #2.
A thorough examination of crop rotations and their impact on farm income and soil conservation; wheat was always the most profitable crop; when grown with N fertilizer, wheat can maintain soil organic matter; farm program allotments greatly influenced profitably of various rotations; using different rotations on different land capability units was recommended; with acreage allotments, alfalfa hay rotations were profitable; on eroded upper slopes, barley and alfalfa were recommended, with wheat on the lower slopes. T: crop rotations X soil loss, organic matter change, returns
10546. Rasmussen, P.E. and C.L. Douglas Jr.. 1991. Effect of rill erosion during early vegetative growth on winter wheat yield.. Agron. J. 83:729-732.
Rill erosion effects on winter wheat growth and yield were determined in six fields where rill erosion occurred during early vegetative growth. Rill erosion reduced head density, dry matter yield, N uptake, and grain yield at all sites. The rill/non-rill grain yield ratio varied from 0.84 to 0.94. The estimated yield reduction per ha associated with average rill development was between 0.9 and 1.2%. Assuming a 36 Mg/ha soil loss, the calculated yield reduction from winter wheat fields yielding 5.2 Mg/ha is 88 kg grain/ha (about $13/ha for wheat valued at $0.147). This erosion cost would encompass a significant percentage of the landscape with sloping topography and is additional to any costs associated with long-term loss of soil productivity.