Relationships of Potato Yields and Quality to Soil Test Values and Fertilizer Applications
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Date
2009-05-01T21:03:07Z, 1977
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Publisher
North Dakota State University
Abstract
Description
The use of soil tests to accurately predict nutrient needs is dependent on
(1) having a soil test procedure that accurately predicts when a nutrient is lacking, and (2) on the calibration of that soil test. Potatoes were grown at 17 sites in the Red River Valley over a 5-year period to determine the influence of N-P-K fertilizer on yield at various soil test levels.