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Estimated Nutrient Content And Uptake By Kentucky's Crops, Kenneth L. Wells, William O. Thom

Soil Science News and Views

A commonly asked question by crop producers is, "how many pounds of plant nutrients do my crops take up?" While the absolute answer to this varies by yield and soil fertility, useful estimates can be made from research data to enable a producer to have a "ballpark" value for nutrient up-take by some of the major crops of Kentucky. The following tables contain estimates of nitrogen (N), phosphorus (P),and potassium (K) contained in certain crops and the amount of N, phosphate (P₂O₅), and potash (K,O) taken up by tobacco, corn, soybeans, wheat, alfalfa hay, clover grass …