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Using the Nitrogen Mineralization Soil Test to Predict Spring Fertilizer N Rate for Soft White Winter Wheat Grown in Western Oregon

Soft white winter wheat is grown in western Oregon and requires a spring application of nitrogen (N) fertilizer for optimum production. Determining the amount of N to apply has been a challenge for growers. Wheat obtains N from two sources: soil and fertilizer. Both available and mineralizable N can be measured to predict the spring fertilizer N rate for winter wheat by using the "N-min" soil test developed at Oregon State University.

EM 9020    Published November 2010    5 pages
Reviewed:
February 2015