No-tillers should be concerned with soil test values assigned to potassium and the resulting intensive use of muriate of potash (KCI). Saeed Khan says recent studies show soil test values to be of no interpretative value due to drastic fluctuations and fail to differentiate potassium buildup from depletion. Levels have been found to increase even in the absence of applied potassium.
The University of Illinois fertility specialist will outline how the inherent potassium-supplying power of Corn Belt soils and the role of crop residues in recycling potassium should have you looking at applied potassium differently. He will share how overuse of potassium can hurt the quality of major food, feed and fiber crops with serious implications for soil productivity and human health.
(Total Run Time: 46 Minutes. File Size: 45MB)
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