1. Oh, K? When is Too Much K Too Much?

Potassium is required in large amounts by crop plants and is a staple fertilizer, mainly as KCl.  Recent data across three midwestern states suggests that sometimes, especially at high rates and shortly before planting, KCl may have negative impacts on corn and/or soybean yields.  Three researchers will briefly describe their research in this area and then field questions from the audience. - Kaiser Twenty-nine potassium (K) fertilizer trials were conducted in ea... D. Kaiser, S. Casteel, D. Franzen