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http://dx.doi.org/10.5660/WTS.2015.4.4.288

The Influence of Adjuvants on Herbicide Activity of Streptomyces scopuliridis KR-001  

Kim, Jae Deok (Eco - friendly and New Materials Research Center, Korea Research Institute of Chemical Technology)
Sin, Hoon Tak (Eco - friendly and New Materials Research Center, Korea Research Institute of Chemical Technology)
Kim, Young Sook (Korea Research Institute of Bioscience and Biotechnology)
Ko, Young Kwan (Eco - friendly and New Materials Research Center, Korea Research Institute of Chemical Technology)
Cho, Nam Kyu (Korea Research Institute of Bioscience and Biotechnology)
Hwang, Ki Hwan (Korea Research Institute of Bioscience and Biotechnology)
Koo, Suk Jin (Korea Research Institute of Bioscience and Biotechnology)
Choi, Jung Sup (Eco - friendly and New Materials Research Center, Korea Research Institute of Chemical Technology)
Park, Kee Woong (Department of Crop Science, Chungnam National University)
Publication Information
Weed & Turfgrass Science / v.4, no.4, 2015 , pp. 288-294 More about this Journal
Abstract
This study was conducted to investigate efficient adjuvants to increase herbicidal efficacy of metabolites from Streptpmyces scopuliridis KR-001. Commonly used 21 adjuvants mixed with the metabolites were applied to eight weed species (six grass weeds and two broadleaved weeds). Based on the visual evaluation, two adjuvants, LE7 (Polyoxyethylene lauryl ether) and EP4C (Sodium bis (2-ethylhexyl) sulfosuccinate), were selected as most efficient adjuvants to elevate herbicidal efficacy of the metabolites. Higher efficacy in the LE7 and EP4C was obtained when overall spray volume was $2,000L\;ha^{-1}(65{\mu}g\;a.i.\;ml^{-1})$ than $1,000L\;ha^{-1}(130{\mu}g\;a.i.\;ml^{-1})$. Field study demonstrated that $1,300{\mu}g\;ml^{-1}$ of metabolites from KR-001 applied with EP4C at concentration of $2{\mu}g\;ml^{-1}$ provided a highly effective post-emergence weed control which was almost equivalent to the glufosinate-ammonium at $540g\;a.i.\;ha^{-1}$. On the basis of these results, combination and multiple application methods could be developed to enhance herbicidal efficacy of metabolites from KR-001.
Keywords
Adjuvant; Herbicidal efficacy; Streptomyces scopuliridis KR-001;
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Times Cited By KSCI : 1  (Citation Analysis)
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