Tissue sampling is key to determine potassium deficiency in soybeans, but it is important to take a sample at the correct ...

The No. 1 challenge with potassium is to manage the nutrient so that it’s ready to work when it’s needed Potassium’s behavior in the soil sets it apart from other nutrients such as nitrogen and ...

LAMAR, Mo. - Drought is a leading reason for potassium deficiency in many Southwest Missouri soybean fields, said Jay Chism, University of Missouri Extension agronomist in Lamar. It first causes older ...

Is potassium deficiency limiting corn yields? Agricultural Research Service (ARS) soil scientists Douglas Karlen and John Kovar think so, and they cite a shift by growers away from preplant tillage as ...