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Ohio long-term P and K fertilizer trials

Ohio corn, soybean and wheat check-off dollars are currently funding Ohio State Extension research to update the "Tri-State Fertilizer Recommendations for Corn, Soybeans, Wheat and Alfalfa."


‘A quiet crisis': The rise of acidic soil in Washington

Wheat farmers are now seeing acidic soils across the inland Pacific Northwest. The culprit, as far as anyone can tell, is the abundant use of synthetic nitrogen to increase crop yields, a practice that has otherwise revolutionized production over the past half century. Over time, however, it has contributed to a soil health problem that has farmers worried about the future of farming in the Palouse.


Phosphorus fertilizer sources

Questions are sometimes asked about the effectiveness, composition, and plant availability of various phosphorus (P) fertilizer sources. Questions such as, “Is liquid more available to the
crop than dry P fertilizer? Is one source better than another in alkaline soils? Can the optimum P rate be reduced with certain sources?” are not uncommon. A simple review of the fundamentals of P fertilizer sources can help address such questions.


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