신규 제초제 후보 화합물 EK-5439의 선택성 및 토양 중 행동특성
The characteristics of the experimental compound EK-5439 [3-Chloro-2-[4-chloro-2-fluoro-5-(5-methyl-3-phenyl-4,5-dihydroisoxazol-5-yl-methoxy)-phenyl]-4,5,6,7-tetrahydro-2H-indazole] was investigated to characterize as a new herbicide to use in rice field. The selectivity between rice and barnyardgr...
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Veröffentlicht in: | 농약과학회지 2004, 8(3), , pp.175-183 |
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Zusammenfassung: | The characteristics of the experimental compound EK-5439 [3-Chloro-2-[4-chloro-2-fluoro-5-(5-methyl-3-phenyl-4,5-dihydroisoxazol-5-yl-methoxy)-phenyl]-4,5,6,7-tetrahydro-2H-indazole] was investigated to characterize as a new herbicide to use in rice field. The selectivity between rice and barnyardgrass was very good when treated from 0 to 4 days after seeding under soil application. In the overflowing experiment, herbicidal efficacy of EK-5439 was stabilized 12 hrs after application. Vertical migrations in submerged paddy soil of EK-5439 and oxadiazon were equally observed below a soil depth of 1 cm under 5 cm/day leaching condition. Half-lives for herbicidal efficacy of EK-5439 and oxadiazon were 6.1, and 9.6 days, respectively, under submerged paddy condition. EK-5439 showed rapid adsorption to the soil clay, such as bentonite. 신규한 벼 제초제 후보화합물 EK-3439 [3-chloro-2-[4-chlore-2-fluoro-5-(5-methyl-3-phenyl-4,5-dihydroisoxazol-5-yl-methoxy)-phenyl]-4,5,6,7-tetrahydro-2H-indazole]의 실용화를 위한 선택성과 토양 중 행동특성을 조사하였다. 직파 벼와 피 간의 선택성은 파종 후 4일 이내에 처리할 경우에 높게 나타났으며, 처리 후 12시간이 경과되면 환수되어도 제초효과의 변동이 일어나지 않았다. EK-5439와 oxadiazon은 모두 토양 중 이동 폭이 5cm/일의 누수 조건에서 1 cm 이내 이었다. EK-5439의 잔효 반감기는 6.1일 이었고, 동일 조건에서 oxadiazon은 9.6일 이었다. 토양 점토광물 bentonite에 의한 흡착은 oxadiazon에 비하여 상대적으로 큰 것으로 나타났으며 흡착력을 간단하게 평가하는 새로운 방법을 적용하였다. |
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ISSN: | 1226-6183 2287-2051 |