2001년 농작물 병해 발생개황 = Review of Disease Incidence of Major Crops in 2001

다국어 초록 (Multilingual Abstract)

Climate in the year of 2001 could be summarized as severe drought from March to May, unusually high temperature
in whole plant growth period, and clear weather condition especially in harvesting time of September and
October without any typoons. In rice, major diseases such as leaf and panicle blast, bacterial blight, sheath
blight and bacterial grain rot developed little due to unfavorable weather conditions, however, brown spot
occurred severely due partly to the reduced use of N-fertilizer. Rice stripe virus infection was unusually high
mainly in the west coast areas with four times more diseased area campared to the previous year. In pepper phytophthora
blight was extremely severe in Cheonnam and Cheonbuk provinces, where had frequent rainfalls
during growing period. Incidence of major diseases of tomato and cucumber in 2001 was relatively mild. In
watermelon, penicillium fruit rot, one of the peculiar disease, spread over major production areas, whereas
CGMMV, usually severe in every year, was much reduced. Watermelon plants growing in open-fields were more
severely diseased than those in plastic houses. Major diseases of chinese melon and strawberry occurred slightly
and in particular, sudden wilt syndrome of chinese melon which was severe in 2000 showed mild infections in
2001. Incidence of white rot of garlic and onion was much lower unlike other years due mainly to spring drought
and high temperature in the growing period. Infected area of potato bacterial wilt tended to increase in 2001
while fusarium wilt of sweetpotato was decreased. Apple diseases were generally mild, but powdery mildew of
pear increased sharply. Barley scab was not severe as seen in other years.