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http://dx.doi.org/10.5333/KGFS.2008.28.3.221

Actual Outbreak Status of Rice Black-streaked Dwarf Virus Disease in Forage Corn of Korea  

Choi, Gi-Jun (National Institute of Animal Science, RDA)
Lim, Young-Chul (National Institute of Animal Science, RDA)
Kim, Ki-Yong (National Institute of Animal Science, RDA)
Seong, Byung-Ryul (National Institute of Animal Science, RDA)
Kim, Meing-Jooung (National Institute of Animal Science, RDA)
Kim, Won-Ho (National Institute of Animal Science, RDA)
Ji, Hee-Chung (National Institute of Animal Science, RDA)
Lee, Joung-Kyong (National Institute of Animal Science, RDA)
Jeon, Byoung-Soo (National Institute of Animal Science, RDA)
Jung, Min-Woong (National Institute of Animal Science, RDA)
Lee, Sang-Hoon (National Institute of Animal Science, RDA)
Seo, Sung (National Institute of Animal Science, RDA)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.28, no.3, 2008 , pp. 221-228 More about this Journal
Abstract
This experiment was carried out to investigate the actual outbreak status of rice black-streaked dwarf virus (RBSDV) disease in forage corn for securing the basic data to control of the disease all over the country from 2006 to 2007. Outbreak of the disease showed a wide difference according to regions and was severe in Icheon, Gochang, Kimje, Youngkwang, Kimchun, Youngju, Cheonan, and Boroung provinces in Korea. Outbreak rate of the disease was effected by planting time of forage corn. Disease rate was lower in corns planted from Apr. 26 to May 15 than in those of planted from April 10 to 25 or after May 31. The corn fields planted from April 26 to May 15 showed lower disease rate than that of planted from April 10 to 25 or after May 31. Also the outbreak rate of the disease was some difference according to corn varieties but was not genuinely resistant varieties to RBSDV. Dry matter yield of forage corn was significantly decreased depending on disease rate, and was highly negative correlation to disease rate. The forage corn infected with RBSDV was lower 3.2%, 3.6% and 12% in IVDMD, TDN, and RFV, and higher 3.7% and 4.5% in NDF and ADF than those of the healthy plant, respectively.
Keywords
Forage corn; Rice black-streaked dwarf virus; Outbreak status;
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