Puzzling potassium levels? There’s a likely explanation

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WOODBURY, Minn. – Ever get a soil test result for potassium that looked a little odd? You’re not alone, said T. Scott Murrell, northcentral director of the Potash and Phosphate Institute.
Soil test potassium levels tend to have some noticeable, and at times dramatic, variability over time.
In the Midwest, studies have shown that soil test potassium levels change through the season, peaking in the spring and bottoming out in the fall.
Possibilities. Why? Well, there are a number of possibilities.

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