Effects of cutting interval on productivity and nutritive values of giant stargrass (Cynodon nlemfuensis Vanderyst) pasture in south-western islands of Japan
2005
Namihira, T.(Kagoshima Univ. (Japan)) | Nagamine , M. | Mizumachi, S. | Bureenok, S. | Miyagi, T. | Kawamoto, Y. | Tamaki, M. | Nakada, T.
A study was conducted to examine the effects of three cutting intervals (4, 6 and 8 weeks) on productivity and nutritive value of giant stargrass (Cynodon nlemfuensis Vanderyst) pasture in south western islands, Okinawa, Japan. The average dry matter yields during May to October were 21.4, 29.8 and 36.0 kg/a at 4, 6 and 8 weekly intervals, respectively. However, total dry matter yield at 8 weeks interval (72.0 kg/a) was lower than those at 4 weeks (85.5 kg/a) and 6 weeks intervals (89.6 kg/a). The nitrogen content (1.6%) and dry matter digestibility (57.8%) at 4 weeks interval were higher than those at 6 weeks (1.3% and 46.1%, respectively) and 8 weeks intervals (1.2% and 43.2%, respectively). Total nitrogen yield and total digestible dry matter yield during the experiment period increased as cutting interval was shortened. The results suggested that giant stargrass pasture should be cut at 4 weeks interval for effective grassland management.
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