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Potassium Soil Test Correlation And Calibration For Burley Tobacco Grown On An Allegheny Loam Soil, Kenneth L. Wells, James E. Dollarhide, Val Shields
Potassium Soil Test Correlation And Calibration For Burley Tobacco Grown On An Allegheny Loam Soil, Kenneth L. Wells, James E. Dollarhide, Val Shields
Agronomy Notes
Burley tobacco removes large amounts of potassium (K) from soil. A 2,600 pound/A cured leaf crop removes around 200 lbs K/A/yr, with about 110 lbs of that in the leaf and 90 lbs in the stalk. Because of such a heavy soil demand for K, growers are always concerned that application of fertilizer K be sufficient for top production. The University of Kentucky's Soil Testing Laboratory (Division of Regulatory Services) provides a statewide soil testing service. The Mehlich-3 soil extractant is used by the UK lab, and soil test K values from use of this extractant (reported as lbs K/A) …