Browse on keywords: crop rotation ID CO
Search results on 07/22/18
784. Bevan, R., W.W. Pawson and O.L. Brough. 1962. A comparison of cropping systems for the Washington - Idaho Palouse area.. ID Agr. Expt. Sta. Bull. #390.
T: yield, production cost, net income
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
1765. Dunbar, B. and D. Nielsen. 1987. White lupins as a rotation alternative with winter wheat in conservation tillage systems.. IN: J.F. Power(ed.) The role of legumes in conservation tillage systems.
Tested white lupin adaptability to irrigated and non-irrigated conditions in Colorado. Screened the crop for a number of herbicides, none of which was entirely satisfactory. All damaged or killed the lupins at rates needed to control weeds. Non-irrigated yields were about 30 bu/ac, up to 50 bu/ac with full irrigation. Lupins did not appear to utilize stored soil water at lower depths.
1979. Fielder, V.B. and P.A. Eke. 1944. . Id Agr. Expt. Sta. Bull. #257.
3319. Young, D.L. and K.M. Painter. 1991. Crop rotation flexibility in the 1990 Farm Bill: Economics perspective.. Paper presented at Farming for Profit and Stewardship Conference, Lewiston, ID, Feb. 14, 1991..
Four provisions of the 1990 Farm Bill are discussed which offer growers potential for increased diversification. These are 15% mandatory unpaid flex acreage, 10% optional unpaid flex acreage, integrated farm management plan option, and modified 0/92 option. Whether these will actually provide profitable opportunities will depend upon the particular characteristics of each farm.
5181. Peterson, P.P.. 1919. Soil and climatic factors in relation to crop production on the Palouse.. ID Agr. Expt. Sta. Bull. #118.
8 rotations with N, P, K trts; clear response to N - 3 bu/ac on wheat at 200 #/ac NaNo3; manure response = 6 bu/ac; wheat yielded same after potatoes and fallow than peas or corn; made the most money with wheat/oats/peas ($51/ac/yr); ave. oat yield 1916 = 70+ bu/ac, 1918 = 26 bu/ac. Wheat, oats more affected by drought than corn or potatoes; this is the first mention of statistical methods. T: fertilizer response, rotation X net return.
6174. Severance, G., B. Hunter and P. Eke. 1930. Farming systems for eastern Washington and northern Idaho.. ID Agr. Expt. Sta. Bull. #173.
same as WA AES Bull. 244
6583. USDA Soil Conservation Service. 1974. Soil conditioning rating indices for major irrigated and non-irrigated crops grown in the Western U.S.. Conservation Agronomy Technical Note No. 27.
This document presents a rating system to judge how various cropping systems affect soil condition over time. It assigns numerical values to various practices and totals them over a rotational sequence, with either a +, -, or neutral outcome. It is not a method for determining erosion. The concepts presented are helpful in assessing "soil quality" for cropping systems, both irrigated and dryland.
7242. Veseth, R.. 1989. Reduced tillage for green manure legumes. STEEP Conservation Farming Update, Summer 1989, p. 3-5.
Three tillages were compared for incorporating Austrian winter pea or red clover green manure: moldboard plow plus shallow disk; shallow disk twice; no-till. At each N fertilizer rate, winter wheat yields were slightly higher with reduced tillage than with conventional tillage. A 60 lb/ac N rate substantially increased wheat yields after green manure, while the 120 N rate gave little or no yield increase. With no N fertilizer, the yield of winter wheat after both green manure crops compared favorably with yield of no-till winter wheat after a seed crop of spring peas. Legume N uptake by a following wheat crop was not affected by residue treatment, but recovery of legume N from the soil was about 10% lower with surface application than with soil incorporation. Also, wheat yields after chemically-killed green manures were consistently lower, and could not be fully recovered with fertilizer N. The mechanism of this suppression is not known.
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.