1. Reevaluating Potassium Recommendations for Soybean Production in Kentucky

Fertility recommendations from land grant universities are typically lower than private soil test laboratories and lead producers to question the adequacy of current recommendations. Further, soil samples analyzed at UK Regulatory Services Soil Testing Laboratory indicate that average state-wide soil test potassium (K) levels are declining approximately 1 lb K/A/year. The reason for this decline is not known, but some suspect it might be due to increased crop yields while maintaining historical... E. Ritchey, J.H. Grove, J.M. Mcgrath