Evaluation of Foliar Fertilization In Nutrient Deficient Cotton

This is a grant-funded project in cooperation with Cotton Incorporated and the Kansas Cotton Association to look at the potential yield benefit and cost of supplemental foliar nitrogen and or potassium in cotton when deficiencies are detected post-planting.  This is a potentially significant problem due to soil composition, e.g., nutrient/element interactions, in SE/SC Kansas. Leaf tissue samples were used to identify pre- and post-application plant N and K levels in fields with apparent nutrient availability problems (i.e., high magnesium levels).  Harvest data will compare foliar treatments to determine the value and effect of the foliar treatments (if any).