WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Sunday, April 22, 2018

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453. Anon.. undated. A long range program for weed control.. V. Kaiser papers, box 3, folder 203.
Suggests a 7 yr rotation; yr 1 plant alfalfa/grass mix (brome, fescue, and orchardgrass); mow when needed; yr 2,3,4- cut for hay, or pasture; yr 4- plow around June 15, cultivate to control weeds; 2,4-D; dry plow after harvest; yr 6 - fallow, yr 7- winter wheat.

1113. Buffum, B.C.. 1900. Alfalfa as a fertilizer and soil improver.. WY Agr. Expt. Sta. Bulletin 44.
Five years of alfalfa in the rotation increased the yield of the following crops by 65, 108, and 55% for spring wheat, oats, and potatoes respectively.

2889. Idaho Agr. Expt. Sta.. 1947. Annual report. ID Agr. Expt. Sta. Bull. #269.
Weed response to 2,4-D - perennials; alfalfa by fertilizer experiments - hay yield over 4 T/ac, responded to P,S; wheat yields after 7 yr alfalfa responded to S and ammonium sulfate; yields up to 68 bu/ac. T: weed response to 2,4-D.

2946. Idaho Agr. Expt. Sta.. 1936. Annual Report. Id Agr. Expt. Sta. Bull #220.
W-P-Alf vs. W-P rotations; peas with alfalfa outyielded peas W-P by 28%; plants were 3" taller; screened 10 Alaska varieties. Gypsum still the best fertilizer for alfalfa.

3835. Larson, C.A.. 1929. Comparative differences in the nitrogen and moisture content of various wheat varieties following alfalfa summer fallow and continuous wheat cropping.. M.S. Thesis, Washington State College, Pullman, WA.
Wheat grown on alfalfa sod has higher N, and generally higher quality wheat.

6203. Sheaffer, C.C., D.K. Barnes, and G.H. Heichel. 1989. Annual alfalfa in crop rotations.. Minnesota Agr. Expt. Sta. Bull. #588.
This bulletin presents results from 10 years of research on the use of annual alfalfas in the upper Midwest. Research shows that including an annual alfalfa for seeding year production of forage and nitrogen in rotations can increase grain yield and economic returns from subsequent crops, through N and non-N rotation effects. Discusses a new nondormant alfalfa variety, Nitro.

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