Louisiana Corn: Wet Spring Conducive to Potassium Deficiency

By Dr. Dan Fromme, LSU AgCenter Corn Specialist

The wet spring has created soil conditions that are not conducive to good corn root growth and development. Potassium (K) deficiency in corn is one result of these conditions. The peak period of K uptake occurs between four to eight weeks after seedling emergence. During this period, the crop takes up as much as 5 pounds of K per acre per day.