벼 깨씨무늬병 발생의 환경요인 분석

• 영문명: Environmental Factor Analysis of Helminthosporium-Leaf-Spot-Disease Occurrence in Rice
• 발행기관: 한국작물학회
• 저자명: 원종건(Jong Gun Won) 서영진(Young Jin Seo) 최장수(Jang Soo Choi) 김승한(Seung Han Kim) 김종수(Jong Soo Kim) 윤재탁(Jae Tak Yoon)
• 간행물 정보: 『한국작물학회지』제51권 제3호, 199~203쪽, 전체 5쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2006.06.30

영문 초록

In the late growth stage of rice plant, thegrowth declines even though they grow wel in early growthstage. This phenomenon is called autumn declining and itoften accompanies the infection ofHelminthosporiumleafspot disease. This tudy was caried out o identify the relatedenvironmental factors and to establish the integrated controlsystem ofHelminthosporiumLeaf Spot Disease in rice.Helminthosporiumleaf spot was 470 ha in 2000 and 1,004 ha in 2001, whichoccupied about 1% of the total pady area in Gyeongbukprovince, Korea. The ill-drained sandy pady occupied 50%of the total area of infected pady fields and followed bysandy paddy (28%). Comparing the content of soil elementsbetween infected and normal pady, it was clarified thatthe organic mater content of normal was higher than that ofas Mn, Fe, Zn and available SiO2 were also higher in normalpaddy. The results of comparing the inorganic elementsbetween infected and normal rice plants also showed thesame results. The contents of inorganic elements uch asMgO, SiO2, Fe, Mn were higher in normal rice plants.Especially highly significant difference of SiO2 content onboth soil and rice plants was noticeable.

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Helminthosporium leaf spot disease environmental factor rice