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Yield and Protein Content of Irrigated Napiergrass, Guineagrass and Pangolagrass as Affected by Nitrogen Fertilization¹

Synopsis: Irrigated, properly fertilized napiergrass, guineagrass and pangolagrass produced 51,491, 41,714, and 18,907 pounds of dry forage per acre yearly, respectively. Yields of napiergrass and guineagrass increased markedly with nitrogen rates up to 800 pounds of N per acre yearly. Protein content of all the grasses increased with nitrogen fertilization up to the 1,600 pound level at which it approached 12% with all species.

² Director of Research, Luce and Company, and Project Supervisor and Soil Scientist, Soil and Water Conservation Research Division, ARS, USDA, respectively.