WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Monday, July 23, 2018

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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

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

11346. Boerboom, C. and F.L. Young. 1991. Integrated crop management for cereal/legume production in the Palouse.. Technical Report 91-3, Dept. of Crop and Soil Sciences, Washington State Univ., Pullman.
This report summarizes six years of a field-scale integrated crop management experiment near Pullman, WA. The study focused on weed management intensity, residue levels for conservation compliance, and economic returns. Two crop rotations, two tillage systems, and three weed management levels were used. Plant diseases, insect pests, soil microbiota and earthworms were also monitored. The study will continue several more years. It took about four years for each treatment to stabilize, pointing out the need for long-term studies. Over time, the three year rotation with conservation tillage appeared most profitable and in compliance with residue levels. The low weed management level was seldom justified by weed control, yield, or profitability considerations. Moderate to high weed management were often the most profitable, although a reduction in the soil reserve of weed seeds with high management might allow periods of less intensive management in the future.

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