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李外鉉,朴尙求,李鐘勳,李光錫,李錫淳 영남대학교 자원문제연구소 1993 資源問題硏究 Vol.12 No.-
In 1988 and 1989 forage productiviity and infection of rice black-streaked dwarf virus (RBSDV) of pearl millet 「Pennisetum americnum (L.) Leeke, cultivar 'Chungaecho'」 were studied at five planting dates( May 1, May 16, May 31, June 15, and June 30) in a RBSDV prevalent area, Chilgok, and a non-prevalent area, Andong. Percent stand was extremely low at May 1 planting due to low temperature in Chilgok. Dry matter(DM) yield increased up to May 15 in Chilgok and May 31 in Andong and then decreased as planting date delayed. In Chilgok DM yield of 1 cut at milk ripe stage for silage was similar to the total DM yield of 2 cuts at plant height of about 150cm and the end of the growing season for soiling crop, while in Andong DM yield of 1 cut was signincantly higher compared to that of 2 cuts. Percentage of RBSDV infected plants and degree of infection were higher in Chilgok com-pared to Andong and those of the second cut were higher compared to the first cut.