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Synopsis: Laboratory studies comparing urea and ammonium nitrate demonstrated a significant gaseous loss of urea nitrogen when applied to Coastal bermudagrass sod. This loss was insignificant when these materials were applied in March to freshly burned Coastal bermudagrass stubble or were placed 6 inches below the soil surface with special applicators.
2 Research Agronomist and Geneticist, respectively, Crops Research Division, ARS, USDA, and the University of Georgia, College of Agriculture Experiment Stations, Coastal Plain Experiment Station, Tifton, Georgia. The writers gratefully acknowledge the cooperation given by J. I. Davis, of the Southeastern Liquid Fertilizer Company, Albany, Ga., in designing and furnishing equipment and providing financial assistance, and to J. Cooper Morcock, of the Nitrogen Division, Allied Chemical and Dye Corporation, in furnishing financial assistance in conducting these investigations.
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