Soil Management

National Testing Lab Finds More Soils Testing “Low” or “Very Low” for Potassium

eKonomics News Team

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On a yearly basis, Rock River Laboratory analyzes hundreds of thousands of soilsamples from 22 states around the country. The one major trend that jumps out in the lab’s analyses is a significant decline in nationwide soil test potassium. In the last five years alone, the number of samples testing “Very Low” for potassium has dramatically increased – as much as 8% in some states. Lab Director Dustin Sawyer provides insight into what he’s been seeing and the financial implications to growers if declining K trends continue.

Nationwide Soil Test K Averages

Over the last decade, there has been a significant decline in soil test potassium levels ‐ an alarming trend that may impact profitability if not addressed.

National Testing Lab Finds More Soils Testing Low for Potassium.

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