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Effects of Cutting Frequency and Nitrogen on Yield, in vitro Digestibility, and Protein, Fiber, and Carotene Content of Coastal Bermudagrass¹

Synopsis: Annual forage yields increased as the interval between cuttings increased to 6 weeks, leveled off as the interval increased to 12 weeks and dropped sharply in plots cut only once. Increasing the interval decreased crude protein and vitamin A equivalent content, leaf percent, and in uitro digestibility and increased stem length and fiber content. Increasing N applications increased yields of dry matter and crude protein and the content of crude protein and vitamin A equivalent but had no effect on the percent fiber in the grass.

² Principal Geneticist, former Research Agronomist (now with Southern Turf Nurseries), and 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 February 21, 1963.

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