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Published online 1 January 1973
Published in Agron J 65:67-68 (1973)
© 1973 American Society of Agronomy
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Effect of Rates of Nitrogen on Yield, Nitrogen Use, and Winter Survival of Midland Bermudagrass [Cynodon dactylon (L.) Pers.] in Appalachia1

E. L. Mathias, O. L. Bennett and P. E. Lundberg2

This study was conducted to determine if Midland bermudagrass [Cynodon dactylon (L.) Pers.] could be utilized in the region of Appalachia as a summer forage during the midsummer months when cool-season grasses are relatively nonproductive. The effects of N rate on yield and longevity of Midland bermudagrass were studied for 3 years in northern West Virginia. Nitrogen at rates of 112, 224, 448, and 672 kg/ha/yr was split into three equal applications. Dry matter yields were increased with each increment of N during the 1st and the 2nd years and through the 448-kg/ha rate in the 3rd year. Nitrogen content of the forage increased with increasing rates of N and was greater in the second harvest than in the first. Percent recovery of applied N was highest at the 224-kg/ha rate in the 1st and the 2nd years and at the 448-kg/ha rate in the 3rd year. Where adequate N was supplied, bermudagrass competed effectively with native grasses and thus survived three winters, even though the temperatures reached as low as –22 C. By the 3rd year annual yields were as high as 16,000 kg/ha.

Key Words: Maximum and minimum temperatures • Nitrogen recovery

1 Cooperative studies between the Northeast Region, Agricultural Research Service, USDA, and West Virginia University Agricultural Experiment Station, Morgantown, W. Va. 26506.

2 Agronomist, Research Investigations Leader, and Agronomist, ARS, USDA, Morgantown, W. Va., respectively.

Received for publication April 7, 1972.




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