농약과학회지 (The Korean Journal of Pesticide Science)
- 제4권3호
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- Pages.1-6
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- 2000
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- 1226-6183(pISSN)
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- 2287-2051(eISSN)
제초제 Dicamba의 자연광 및 토양 중 분해
Degradation of the herbicide dicamba under sunlight and in soil
- 오경석 (농업과학기술원 작물보호부 농약안전성과) ;
- 오병렬 (농업과학기술원 작물보호부 농약안전성과) ;
- 박승순 (농업과학기술원 작물보호부 농약안전성과) ;
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임양빈
(농업과학기술원 작물보호부 농약안전성과) ;
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경기성
(농업과학기술원 작물보호부 농약안전성과) ;
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이재구
(충북대학교 농과대학 농화학과)
- Oh, Kyeong-Seok (National Institute of Agricultural Science & Technology, RDA) ;
- Oh, Byung-Youl (National Institute of Agricultural Science & Technology, RDA) ;
- Park, Seung-Soon (National Institute of Agricultural Science & Technology, RDA) ;
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Ihm, Yang-Bin
(National Institute of Agricultural Science & Technology, RDA) ;
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Kyung, Kee-Sung
(National Institute of Agricultural Science & Technology, RDA) ;
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Lee, Jae-Koo
(Department of Agricultural Chemistry, College of Agriculture, Chungbuk National University)
- 발행 : 2000.09.30
초록
광조건 및 토양중에서 제초제 dicamba의 분해특성을 조사하기 위하여 자연광 조건과 물리화학성이 다른 2종류의 토양을 선택하여 수행하였다. 광조건하에서 dicamba의 분해율은 처리 9주후에 3.3%였으며, 주분해산물로써 4-hydroxy dicamba가 검출되었고, 또한 기존에 알려진 분해산물인 5-hydroxy dicamba도 확인되었다. 한편 Dicamba는 살균되지 않은 토양에서 배양 8주후에
In order to elucidate the degradation of the herbicide dicamba, the degradabilities of dicamba under sunlight and in soils were investigated. The photodegradation rate of the authentic dicamba under sunlight condition was only 3.3% after 9 weeks. 4-Hydroxy dicamba turned out to be the major product, and 5-hydroxy dicamba was also identified. Dicamba was degraded to 3,6-dichlorosalicylic acid by demethylation in the viable soil, which resulted in 14.7 to 23.2% degradation of the applied amount during 8 weeks of incubation. Meanwhile, the degradation was quite slow in the sterilize soil, which revealed that the soil microbes played a major role in dicamba degradation.