2008 Joint Annual Meeting (5-9 Oct. 2008): Polymer Fertilizer Coatings: Can They Increase Phosphorus Efficiency in Rice?.
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750-1 Polymer Fertilizer Coatings: Can They Increase Phosphorus Efficiency in Rice?.



Wednesday, 8 October 2008: 3:15 PM
George R. Brown Convention Center, 371A
David Dunn, PO Box 160, University of Missouri, University of Missouri, Delta Center, Portageville, MO 63873 and Gene Stevens, University of Missouri, PO Box 160, Portageville, MO 63873
A polymer coating of phosphate fertilizer was evaluated for rice yield response. Three rates of phosphate fertilizer, including polymer coated and non coated, were compared to an untreated check.  Soil and plant tissue samples were collected at two week intervals through out the growing season.  At seasons end grain was harvested and net yields determined. Net returns were calculated based on crop price and input costs. At the 28 P2O5 kgha-1 rate the polymer coated treatments produced greater yields than equivalent non coated treatments.  At higher P2O5 rates both polymer coated and non coated treatments produced equivalent yields.  The 25 kgha-1  P2O5 coated TSP treatment produced the greatest returns to producers.  Analysis of soil and tissue samples produced similar trends.
See more of: Phosphorus and Potassium Management
See more of: S04 Soil Fertility & Plant Nutrition