Results 151 to 160 of about 758 (174)
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Confirmed resistance to aryloxyphenoxypropionate herbicides in Phalaris minor populations in Iran
Weed Biology and Management, 2011Phalaris minor (littleseed canary grass) is a major weed in wheat fields in some parts of Iran. Diclofop‐methyl, fenoxaprop‐P‐ethyl, and clodinafop‐propargyl are three acetyl coenzyme A carboxylase (ACCase)‐inhibiting herbicides that are commonly used to control this grass in wheat fields. Thirty‐four P.
JAVID GHEREKHLOO +6 more
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Resistance to Aryloxyphenoxypropionate and Cyclohexanedione Herbicides in Wild Oat (Avena fatua)
Weed Science, 1993Resistance to aryloxyphenoxypropionate and cyclohexanedione herbicides was identified in four wild oat populations from western Canada. Populations UM1, UM2, and UM3 originated from northwestern Manitoba and UM33 from south-central Saskatchewan. Field histories indicated that these populations were exposed to repeated applications of diclofop-methyl ...
Ian M. Heap +3 more
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Pesticide Biochemistry and Physiology, 1993
Abstract Interactions between MCPA and diclofop-methyl, clopyralid and quizalofop-ethyl, and 2,4-D with fluazifop-acid and -butyl were examined in detail in a proton-efflux assay using etiolated coleoptile tissue from Avena sativa L. The aryloxyphenoxypropionic acid/esters alone were inactive but significantly inhibited synthetic auxin-induced ...
P. Barnwell, A.H. Cobb
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Abstract Interactions between MCPA and diclofop-methyl, clopyralid and quizalofop-ethyl, and 2,4-D with fluazifop-acid and -butyl were examined in detail in a proton-efflux assay using etiolated coleoptile tissue from Avena sativa L. The aryloxyphenoxypropionic acid/esters alone were inactive but significantly inhibited synthetic auxin-induced ...
P. Barnwell, A.H. Cobb
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Australian Journal of Chemistry, 1995
A new, simple method for the preparation of several 4-( aryloxy )phenols (2a-d) and alkyl 2-(4-hydroxyphenoxy)propionates (3a,b) is described. These compounds are key precursors for the synthesis of important aryloxyphenoxypropionate herbicides (1a-d). The method uses the Elbs persulfate oxidation to convert phenol into 4-hydroxyphenyl sulfate (5). The
KG Watson, A Serban
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A new, simple method for the preparation of several 4-( aryloxy )phenols (2a-d) and alkyl 2-(4-hydroxyphenoxy)propionates (3a,b) is described. These compounds are key precursors for the synthesis of important aryloxyphenoxypropionate herbicides (1a-d). The method uses the Elbs persulfate oxidation to convert phenol into 4-hydroxyphenyl sulfate (5). The
KG Watson, A Serban
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Bioorganic & Medicinal Chemistry Letters, 1997
Abstract The herbicidal activity of a set of N -methyl arylaminophenoxypropionate esters 3 has been compared to the analogous aryloxyphenoxypropionates 1. The usefulness of N -methyl as a novel bioisostere for ether links is shown by the surprisingly high herbicidal activity of the 6-chloroquinazolin-2-yl- and 7-chloro-1,2,4-benzotriazin-3 ...
Graham J. Bird +11 more
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Abstract The herbicidal activity of a set of N -methyl arylaminophenoxypropionate esters 3 has been compared to the analogous aryloxyphenoxypropionates 1. The usefulness of N -methyl as a novel bioisostere for ether links is shown by the surprisingly high herbicidal activity of the 6-chloroquinazolin-2-yl- and 7-chloro-1,2,4-benzotriazin-3 ...
Graham J. Bird +11 more
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Bioorganic & Medicinal Chemistry Letters, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hui, Liu, Hong-Qing, Wang, Zhao-Jie, Liu
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hui, Liu, Hong-Qing, Wang, Zhao-Jie, Liu
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Weed Science, 2001
Abstract Acetyl-coenzyme A carboxylase (ACCase) assays and absorption, translocation, and metabolism experiments were conducted to investigate the mechanism(s) responsible for resistance in a johnsongrass biotype that exhibited low levels of resistance to the cyclohexanedione (CHD) herbicide sethoxydim and the aryloxyphenoxypropionate (APP) herbicides ...
Kevin W. Bradley +3 more
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Abstract Acetyl-coenzyme A carboxylase (ACCase) assays and absorption, translocation, and metabolism experiments were conducted to investigate the mechanism(s) responsible for resistance in a johnsongrass biotype that exhibited low levels of resistance to the cyclohexanedione (CHD) herbicide sethoxydim and the aryloxyphenoxypropionate (APP) herbicides ...
Kevin W. Bradley +3 more
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Chinese Journal of Analytical Chemistry, 2006
Abstract This article reported the enantioseparation of diclofop, fluazifop, quizalofop-P and fenoxaprop using self-prepared cellulose derivative CDMPC and (S,S)-Whelk-O 1 columns. The influence of the mobile phase composition and solute structure on the chiral separation was studied. And their chiral recognition mechanism was discussed.
Chunxiu Pan +4 more
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Abstract This article reported the enantioseparation of diclofop, fluazifop, quizalofop-P and fenoxaprop using self-prepared cellulose derivative CDMPC and (S,S)-Whelk-O 1 columns. The influence of the mobile phase composition and solute structure on the chiral separation was studied. And their chiral recognition mechanism was discussed.
Chunxiu Pan +4 more
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Weed Science, 2019
AbstractAsia Minor bluegrass (Polypogon fugax Nees ex Steud.) is a problem grass weed of winter crops in China, where a population has become resistant to aryloxyphenoxypropionate (APP) herbicides. The mechanism of resistance is due to an Ile-2041-Asn mutation of the ACCase gene.
Wei Tang +4 more
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AbstractAsia Minor bluegrass (Polypogon fugax Nees ex Steud.) is a problem grass weed of winter crops in China, where a population has become resistant to aryloxyphenoxypropionate (APP) herbicides. The mechanism of resistance is due to an Ile-2041-Asn mutation of the ACCase gene.
Wei Tang +4 more
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Pest Management Science, 2019
AbstractBACKGROUNDEffective management of weedy species in agricultural fields is essential for maintaining favorable growing conditions and crop yields. The introduction of genetically modified crops containing herbicide tolerance traits has been a successful additional tool available to farmers to better control weeds.
Clayton T Larue +16 more
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AbstractBACKGROUNDEffective management of weedy species in agricultural fields is essential for maintaining favorable growing conditions and crop yields. The introduction of genetically modified crops containing herbicide tolerance traits has been a successful additional tool available to farmers to better control weeds.
Clayton T Larue +16 more
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