WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Tuesday, October 23, 2018

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8402. Gardner, H. and N.R. Goetze. 1980. Winter wheat - non-irrigated Columbia Plateau.. OSU Fertilizer Guide FG54, OSU Extension Service, Corvallis, OR F.
Soil sampling is recommended for 0-2' and 2-6' depths. A table indicating N fertilizer needs is included, to be used with soil test results. Suggestions are also made for P and S.

8412. Pumphrey, F.V. and P.E. Rasmussen. 1982. Winter wheat fertilization in the northeast intermountain region of Oregon.. OSU AES Circular of Information 691, OSU, Corvallis, OR.
Early spring application of N is more effective than preplant. Rates can be reduced up to 50%. Most wheat needs S fertilizer (15-30 lb/ac) if N is added. Most soils supply enough P for high yields. There have not been significant yield responses to potassium or trace elements.

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