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신규 화합물 EK-5439의 선택성 및 protoporphyrinogen oxidase 저해활성
홍경식(K. S. Hong),황인택(I. T. Hwang),김형래(H. R. Kim),전동주(D. J. Jeon),이병회(B. H. Lee),송종환(J. H. Song),조광연(K. Y. Cho) 한국농약과학회 2004 농약과학회지 Vol.8 No.2
3-Chloro-2-[4-chloro-2-fluoro-5-(5-methyl-3-phenyl-4,5-dihydroisoxazol-5-ylmethoxy)-phenyl]-4,5,6,7-tetrahydro-2H- indazole(EK-5439) demonstrated rice selectivity and herbicidal activity on annual weeds, such as Echinochloa oryzicola, Monochoria vaginalis, Lindernia pyxidaria, Rotala indica, Aneilema keisak, Cyperus difformis, and Ludwigia prostrata at doses of 16-63 g a.i./㏊. However, the application window was limited from pre-emergence to 5 days after transplanting. The control efficacy of EK-5439 on barnyardgrass was 4 times higher than that of oxadiazon. EK-5439 was excellently safe to the 16 different transplanted rice cultivars treated 2 days after transplanting. These compounds have the mechanism of action on the chlorophyll biosynthesis like protoporphyrinogen Ⅸ oxidase inhibitors.