Results 221 to 230 of about 13,172 (272)

Enantioselectivity of racemic metolachlor andS-metolachlor in maize seedlings

Journal of Environmental Science and Health, Part B, 2010
Chiral herbicides may have enantioselective effects on plants. In this study, we assessed and compared the enantioselectivity of the chiral herbicides rac-metolachlor and S-metolachlor to maize seedlings. The superoxide dismutase activity (SOD) activity of roots and stem leaves treated by rac-metolachlor was 1.38 and 1.99 times that of roots and stem ...
Fei, Xie, Hui J, Liu, Wei D, Cai
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Metolachlor, S-metolachlor and their role within sustainable weed-management

Crop Protection, 1998
Abstract The herbicide metolachlor has been widely used for over 20 years for selective weed control in more than 70 crops worldwide. Its favourable soil behaviour and low risk for developing weed resistance means that metolachlor integrates well into sustainable weed-management practices, such as conservation tillage.
Peter J. O'Connell, Christian T. Harms, James R.F. Allen   +2 more
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Enantioselective Degradation of Rac-Metolachlor and S-Metolachlor in Soil

Pedosphere, 2006
ABSTRACT Separation of chiral enantiomers and the dissipation of rac-metolachlor and S-metolachlor in soil were evaluated using achiral high-performance liquid chromatography (HPLC) and chiral gas chromatography (GC) methods. Under the experimental conditions the possible metabolite was considered to be N-(2-ethyl-6-methyl-phenyl)-2-hydroxy-acetamide.
Yun MA, Wei-Ping LIU, Yue-Zhong WEN
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Comparative phytotoxicity ofRac-metolachlor andS-metolachlor on rice seedlings

Journal of Environmental Science and Health, Part B, 2012
The toxicity of Rac-metolachlor and S-metolachlor on rice (IIYou92, Oryza sativa L.) seedlings was determined and compared in a hydroponics experiment. The elongation of shoot, main root, and the number of lateral roots were inhibited in both Rac- and S-metolachlor treatments.
Hui J, Liu, Ming Y, Xiong, Bao L, Tian
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Microbial transformation of metolachlor

Environmental Toxicology and Water Quality, 1995
AbstractMetolachlor is an important selective herbicide used for the control of several annual grassy weeds and certain broad‐leafed weeds in corn, soybean, peanut, and other crops. It is the most heavily used agricultural pesticide in Ontario. There is, however, very little information in the open literature on the aquatic fate and persistence of ...
D. Liu, R. J. Maguire, G. J. Pacepavicius, I. Aoyama, H. Okamura   +4 more
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Microbial adsorption of cyanazine and metolachlor

Journal of Environmental Science and Health, Part B, 1998
A laboratory experiment was performed to study the role of microorganisms in producing the non-extractable residues by anaerobically incubating cyanazine (2-[[4-chloro-6-(ethylamino)-1,3,5,-triazin-2-yl]-amino]-2-methoxy -l- methylethyl)acetamide] and metolachlor [2-chloro-N-(2-ethyl-6-methoxy-l- methylethyl)acetamide] in culture media that had been ...
D, Liu, R J, Maguire, Y L, Lau, G J, Pacepavicius, H, Okamura, I, Aoyama   +5 more
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Metabolism of Metolachlor by Fungal Cultures

Journal of Agricultural and Food Chemistry, 2002
Metabolism of metolachlor was studied using a mixed fungal culture isolated from a metolachlor-acclimated field soil. The culture rapidly degraded metolachlor with a half-life of 3.5 days in broth. Aspergillus flavus and A. terricola purified from the mixed culture also metabolized metolachlor effectively.
D, Sanyal, G, Kulshrestha
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Soil dissipation and biological activity of metolachlor and S‐metolachlor in five soils

Pest Management Science, 2006
AbstractThe resolved isomer of metolachlor, S‐metolachlor, was registered in 1997. New formulations based primarily on the S‐metolachlor isomer are more active on a gram for gram metolachlor basis than formulations based on a racemic mixture of metolachlor containing a 50:50 ratio of the R and S isomers.
Dale L, Shaner, Galen, Brunk, David, Belles, Phil, Westra, Scott, Nissen   +4 more
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Infiltration and adsorption of dissolved metolachlor, metolachlor oxanilic acid, and metolachlor ethanesulfonic acid by buffalograss (Buchloe dactyloides) filter strips

Weed Science, 2004
Vegetative filter strips (VFS) potentially reduce herbicide transport from agricultural fields by increasing herbicide mass infiltrated (Minf) and herbicide mass adsorbed (Mas) compared with bare field soil. However, there are conflicting reports in the literature concerning the contribution of Masto herbicide trapping efficiency (TE).
Larry J. Krutz, Scott A. Senseman, Monty C. Dozier, Dennis W. Hoffman, Dennis P. Tierney   +4 more
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Metolachlor stereoisomers: Enantioseparation, identification and chiral stability

Journal of Chromatography A, 2016
Metolachlor is a chiral herbicide consisting of four stereoisomers, which is typically used as a racemic mixture or is enriched with the herbicidally active 1'S-isomers. Because studies on the enantioselective behavior of phyto-biochemical processes and the environmental fate of metolachlor have become significant, a practical method for analyzing and ...
Jingqian, Xie, Lijuan, Zhang, Lu, Zhao, Qiaozhi, Tang, Kai, Liu, Weiping, Liu   +5 more
openaire   +2 more sources