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3715. Koehler, F.E.. 1964 (Jul). Relative effectiveness of various sources of nitrogen materials as fertilizers for wheat.. Proc. 15th Ann. Fertilizer Conf. PNW, Salem, OR; p. 39-45.
Tested 12 sources or combinations of N fertilizer, including various times of application. Three locations (22, 16, and 10" precip.). One year of data. Calcium nitrate performed best in the high rainfall site. No response to spring-applied N at the 16" precip. site.