Abstract
The type of clay you have in your soil could make a $10,000 or more difference in your potassium (K) availability. Groundbreaking research by North Dakota State University (NDSU) Extension Soil Specialist David Franzen and others reveals that a soil’s clay mineralogy is responsible for K fixation (tie‐up in unavailable forms). Earn 1.5 CEUs in Soil & Water Management by reading the article and taking the quiz at www.certifiedcropadviser.org/education/classroom/classes/982.
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