Crop Yield, Nutrient Uptake, and Nutrient Removal in Mississippi's Centennial Rotation

The poster presentation will contain a 10-year summary of crop yields along with nutrient (N, P, K and S) uptake and removal from rotations initiated in 2004.  The original cotton-based rotations include cotton, corn, and soybean in various rotation systems from 100% to 50% cotton on 2-year, 3-year, or 4-year systems and comapred to continuous cotton.  Crop yields have been used to estimate both nutrient uptake and nutrient removal.  Increasing the grain component of the rotation system results in greater cotton yields but also leads to greater nutient removal.  Each crop in each rotation system has been grwon each year of the study.