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고서봉,강태홍,신재순,김영우 한국초지조사료학회 1993 한국초지조사료학회지 Vol.13 No.4
고서봉,백윤기,김문철 ( Seo Bong Ko,Yun Ki Baek,Moon Chul Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.6
This experiment was conducted during the 1978-79 season to evaluate the productivity of 12 cultivars of Italian ryegrass introduced from Japan and West Germany at Jeju. The results obtained are as follows: 1. Tetrone, Dalita and N.F.G. cultivars (West Germany) grew well during the growing season, while Wase-yataka and Lirasand showed faster growth than other cultivars at the early stage of growth. 2. Tetrone Italian ryegrass gave the highest dry matter yield (1,563㎏/l0a), followed by control cultivar (1,561㎏/l0a) and Wase-yataka (1,545㎏/l0a). 3. Productivity of Wase-yataka and cultivar as control were increased significantly (P$lt;0.01) in the early stage of growth, but Mammoth and Dalita showed remarkable productivity in May. 4. For all cultivars, the highest yield was obtained at the 2nd cut and amounted to 50% or more of the total dry matter yield over the growing period.
제주 화산회토 초지에 석회 및 인산 시용이 수량 및 무기성분함량에 미치는 영향
고서봉,백윤기,양창범,정창조 제주대학교 농과대학 제주도축산문제연구소 1991 畜産論叢 Vol.6 No.1
To determine the effects of lime and phosphate on dry matter yield and mineral content in mixed sward in Cheju volcanic ash soil from October 1983 to the end of growing season in 1986 . The pH in soil was not affected by lime and phosphate applied, hut exchangeable Ca, Mg and available P were increased h y liming and phosphate levels. Average mean dry matter yield of lime plot was more increased 5% than that non-lime plot, and dry matter yield according to the phosphate (0, 20, 40, 60 kg/10a) applications were significantly increased 488.3kg. 1,024kg, 1,137.0 kg and 1,202.2 kg, respectively. Botanical composition in non-phosphate plot was dominated by Red top but Ladino clover was almost disappearanced However, phosphate applied plot were dominated by Orchard grass and lading clover 50-60 % and 15-20 %, respectively. Mineral (P, K, Ca, Mg) content in herbage were not different between lime and non-lime plot. But P, Ca and Mg were increased according to the phosphate levels.