Effect of Rice Black-Streaked Dwarf Virus(RBSDV) Infection Rate on Forage Productivity of Corn Variety in Middle District of Korea
2017
Choi, G.J., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Lim, Y.C., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Yoon, S.H., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Ji, H.C., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Lee, S.H., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Jung, M.W., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Kim, W., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Park, H.S., National Institute of Animal Science, RDA, Jeonju, Republic of Korea | Kim, K.Y., National Institute of Animal Science, RDA, Jeonju, Republic of Korea
This experiment was carried out to study the effect of rice black-streaked dwarf virus(RBSDV) infection rate on forage productivity of corn varieties in Cheonan of chungcheongnamdo from 2006 to 2008. Forage corn varieties of 10 were cultivated with first cropping(seeding in the last ten days of April) and second cropping(seeding in the last ten days of May) system in field and tested the infection rates of RBSDV and productivity of forage. The Infection rate of RBSDV was significant difference between corn varieties in middle district of Korea. Resistant corn varieties for RBSDV were 'Kwanganok', 'P3156', 'Kwangpeyongok' and 'P3394' but susceptible varieties were 'Suwon19', 'DK697', 'GW6959' and NC+7117. Dry matter(DM) yield of forage corn according with infection rates of RBSDV in field was significant difference between varieties(p less than 0.05). DM yield of susceptible varieties, 'Suwon 19', 'DK697' and 'GW6959' was lower about 20% than that of resistant varieties, 'Kwangpeyongok' and 'P3156'. For increasing the productivity of forage corn, recommend of resistant varieties for RBSDV and control of seeding time are very important in middle district of Korea.
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