Viruses diagnosed on crops including rice plants from farmers or agricultural extension agencies cover the
country were 11 species including Broad bean wilt virus 2 (BBWV2) in 2008. Tomato spotted wilt virus (TSWV)
was the most important virus having the detection rate of 22.9%. Two viruses of Tomato yellow leaf curl virus
(TYLCV) and Tobacco leaf curl virus (TLCV) inducing leaf yellow and curl diseases on tomatoes were
occurred newly with the detection rate of 12.2% and 4.0%, respectively, in 2008. Rice stripe virus (RSV) was
occurred on 869.5 ha mainly at Jindo and Haenam areas in Jeollanamdo province. At Jindo area, 12 plots
were damaged severely with the infected hill rate of 83.8%. At the main production area of oriental melon at
Seongju, almost all fruits from whole sale market at Seongju were infected with Cucumber green mottle
mosaic virus (CGMMV) as the detection rate of 87%. The areas occurred TSWV in Korea were 25 totally
from 2003 including 7 areas newly reported in 2008 including Naju in Jeoallanamdo. TSWV could be reduced
as 0.1% from 5.3% by covering insect proof net in vinyl house after chemical soil sterilization. Tomato yellow
leaf curl disease was occurred on April in 2008 at Tongyoung area in Kyeongsangnamdo, and detected continuously
at 13 areas, 7 in Kyeongsangnamdo, 4 in Jeollabukdo and 2 in Jejudo. Potato spindle tuber viroid
(PSTVd) was occurred abruptly in a confined space of a civil breeding greenhouse and a cultivar evaluation
field followed by disuse 17.4 M/T of potato tubers. No PSTVd was detected at 17 fields cultivated the related
potatoes to the bred company by RT-PCR.