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Seasonal Variation in Chemical Composition and Yield of Coastal Bermudagrass as Affected by Nitrogen Fertilization Schedule¹

Synopsis: Seasonal variation in yield and crude proteincontent of ‘Coastal’ bermudagrass was reduced when nitrogen was applied in 6 increments of 100 pounds per acre rather than three 200-pound increments. Protein content at the first cutting was higher under the latter schedule, but was higher under the former at the second cutting. Total yield, average crude protein, crude fiber, and vitamin A content, and seasonal variation in fiber and vitamin A content did not differ significantly between schedules. A schedule of four 150-pound applications of nitrogen is proposed to maintain protein, fiber, and vitamin A at desired levels throughout the season.

² Research Agronomist, Principal Geneticist, and former Research Agronomist, respectively, Crops Research Division, ARS, USDA, and the University of Georgia, College of Agriculture Experiment Stations, Coastal Plain Experiment Station, Tifton, Ga.

Received for publication June 18, 1964.