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Reaction of chlorimuron‐ethyl with diazomethane
Toxicological & Environmental Chemistry, 1996Methylation of chlorimuron‐ethyl with etheral solution of diazomethane gave ethyl‐2‐[[[[(4‐chloro‐6‐methoxy‐2‐pyrimidinyl) N‐methylamino] carbonyl] N‐methylamino] sulfonyl] benzoate (dimethyl derivative of chlorimuron‐ethyl) as the major product along with 4‐chloro‐6‐methoxy‐2‐N‐methylamino pyrimidine, 2‐aminomethyl sulfonyl benzoic acid, ethyl‐2‐[(N ...
Partha P. Choudhury, Prem Dureja
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Dissipation of Chlorimuron in Southern Soils
Weed Science, 1994Chlorimuron dissipation as determined by bioavailability in nine soils across the Southern United States was characterized by rapid initial loss followed by a slower dissipation rate following field application of the herbicide in soybean. The rate of bioavailable dissipation varied by year and soil The calculated time for 50% dissipation of ...
William K. Vencill, Philip A. Banks
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Studies on photodegradation of chlorimuron-ethyl in soil
Pesticide Science, 1997Photolysis of chlorimuron-ethyl was studied on a soil surface under sunlight and UV light. Eight photoproducts were isolated and characterised by spectroscopic methods. Major photoproducts are formed by cleavage of the sulfonylurea bridge and minor products are formed via dechlorination, hydrolysis and cyclisation.
Partha P. Choudhury, Prem Dureja
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Sorption and Mobility of Chlorimuron in Alabama Soils
Weed Science, 1989Soil thin-layer chromatography and a soil solution technique were used to evaluate chlorimuron adsorption and mobility in five Alabama soils. The order of adsorption was atrazine > metribuzin > chlorimuron; mobility was chlorimuron > metribuzin > atrazine.
Andrew J. Goetz +3 more
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Phototransformation of Chlorimuron-ethyl in Aqueous Solution
Journal of Agricultural and Food Chemistry, 1996Chlorimuron-ethyl is relatively stable in water buffered to pH 7.0 and 9.0, but hydrolyzes readily (half-life, 14 d) in water buffered to pH 4.0. In addition, chlorimuron-ethyl photodegrades rapidly and extensively in aqueous solution. The predominant photoproducts are 4-methoxy-6-chloro-2-aminopyrimidine, ethyl 2-aminosulfonylbenzoate, N-(4-methoxy-6 ...
Partha P. Choudhury, Prem Dureja
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Interactions of Diphenylether Herbicides with Chlorimuron and Imazaquin
Weed Technology, 1992Field experiment were conducted to determine interactions of chlorimuron or imazaquin with fomesafen, lactofen, or acifluorfen on three-leaf and eight-leaf common cocklebur, hemp sesbania, pitted morningglory, and prickly sida. Antagonism was the most common interaction with common cocklebur, and was most severe with chlorimuron combined with fomesafen
M. Todd Wesley, David R. Shaw
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Effect of Moisture on Chlorimuron Degradation in Soil
Weed Science, 1990The overall degradation of chlorimuron was very similar at −0.1 and −1.5 MPa and slightly less in air-dry soil. Degradation rates increased with increasing temperature. The primary 14C-labeled compounds observed in moist-soil extracts were desmethyl chlorimuron and saccharin, while the primary 14C-labeled compound observed in air-dry soil extracts was ...
Thomas P. Fuesler, Michael K. Hanafey
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Phototransformation of chlorimuron-ethyl on leaf surface
Toxicological & Environmental Chemistry, 2007Chlorimuron-ethyl, a post-emergent herbicide selectively used in soybean and maize, degrades mainly through chemical hydrolysis. Photolysis has also an important role in the degradation of this compound. Phototransformation of chlorimuron-ethyl takes place through the cleavage of the sulfonylurea bridge, dechlorination, de-esterification and ...
Partha P. Choudhury +2 more
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Efficacy of chlorimuron for controlling weeds in soybean
Indian Journal of Weed Science, 2016The field was infested with monocot weeds like Echinochloa colona, Cyperus iria whereas dicot weeds Alternanthera philoxiroides, Eclipta alba, Commelina benghalensis and Phyllanthus niruri were less dominant in soybean. The application of Chlorimuron-ethyl 24 g/ha as early post-emergence along with mechanical weeding was most effective in paralyzing ...
Bhawana Saharan +3 more
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Adsorption-Desorption Characteristics of Chlorimuron-Ethyl in Soils
Agricultural Sciences in China, 2007The adsorption-desorption characteristics of chlorimuron-ethyl in soils were investigated to provide the basic data for evaluating the safety in field and the risk to water resource. The adsorption-desorption experiment was conducted by the batch equilibration and HPLC techniques; furthermore, data were analyzed with 5 mathematic models to describe the
Wei ZHANG +3 more
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