Improving Nutrition with Enhanced Efficiency Fertilizers and Seed Treatments

Experiments were conducted at the Ames Plantation, located near Grand Junction, TN, on a Loring silt loam soil, during the years 2011-2014 in order to evaluate the effectiveness of the dicarboxlic polymer AVAIL as a coating on MAP or DAP fertilizers in improving phosphorus uptake and yield of cotton. The nitrogen stabilizer Nutrisphere was also evaluated as a coating on granular urea and compared to ammonium nitrate. Applications were either all preplant or one-half preplant and one-half sidedress. In a seperate experiment conducted in 2014 at Agri-Center International in Memphis, TN, seed treatments containing zinc and boron were tested on three different cotton varieties. All experiments were replicated four times. Data taken included cotton leaf nutient uptake, harvestable boll number and lint yield.