Results 141 to 150 of about 1,482 (178)
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Leaching of Three Imidazolinone Herbicides during Sprinkler Irrigation
Journal of Environmental Quality, 2012Some imidazolinone herbicides have been shown to be mobile in soil, raising concern about their possible movement to ground water. Three imidazolinone herbicides (imazamethabenz-methyl, 497 g ha(-1); imazethapyr, 14.7 g ha(-1); and imazamox, 14.7 g ha(-1)) commonly used in crop production on the Canadian prairies were applied to a tile-drained field to
Allan J, Cessna +2 more
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Imidazolinone-Tolerant Rice Response to Imazethapyr Application
Weed Technology, 2006Greenhouse research was conducted to evaluate shoot and root growth response of imidazolinone-tolerant (IT) rice cultivars to imazethapyr applied postemergence at various rates and application timings. Imazethapyr was applied at 70, 140, and 280 g ai/ha to IT cultivars ‘CL 121’ and ‘CL 161’ in the one- to two-leaf and three- to four-leaf growth stages.
Ronald J. Levy +5 more
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Imidazolinone herbicides for weed control in greengram
Indian Journal of Weed Science, 2016A field experiment to study the efficacy of imidazolinone herbicides in greengram was conducted during Kharif seasons of 2012 and 2013. Ten weed control treatments viz. imazethapyr at 50 and 70 g, premix of imazethapyr + imazamox at 60 and 70 g/ha, both applied as post-emergence at 20 days after sowing; pendimethalin 1000 g and premix of pendimethalin +
Simerjeet Kaur +2 more
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Synthesis of ketovinyl derivatives of 2-imidazolinone
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19801. The reaction of 4(5)-methyl-2-imidazolinone with crotonyl chloride, chlorovinyl phenyl ketone or chlorovinyl n-amyl ketone in the presence of AlCl3 respectively, gives 4-methyl-5-crotonyl-, 4-methyl-5-phenylketovinyl- or 4-methyl-5-n-amylketovinyl-2-imidazolinone. 2.
S. I. Zav'yalov, N. E. Knyaz'kova
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Imidazolinone herbicides: Synthesis and novel chemistry
Pesticide Science, 1990AbstractThe imidazolinone herbicides were prepared from reaction of an α‐ methylvaline fragment with an o‐dicarboxylic acid. Early syntheses were completed through an imide amide intermediate, such as I or XV, followed by further cyclization to 2,5‐diones III or XXI. Reaction of these diones with nucleophiles led to imidazolinones IV and V.
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Synthesis of ?-sulfur-containing 2-imidazolinone derivatives
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19731. A method was developed for the synthesis ofα-sulfur-containing derivatives of 2-imidazolinone by the reaction of 4(5)-piperidino-methyl-2-imidazolinones with mercaptans, carbon disulfide and thioacetic acid. 2. 4(5)-Methyl-5(4)-S-acetylmercaptomethyl-2-imidazolinone was converted to bis[4(5)-methyl-2-imidazolinonyl-5(4)-methyl ...
S. I. Zav'yalov +2 more
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Synthesis of 4(5)-alkyl-2-imidazolinones
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19861. A mixture of 1- and 3-bromo-2-alkanones reacts selectively with piperidine in benzene or trimethylamine in aqueous ethanol to form the corresponding 1-piperidino-2-alkanones of (β-oxoalkyl)trimethylammonium bromides. 2. Cyclocondensation of 1-piperidino-2-alkanones and (β-oxoalkyl)trimethylammonium bromides with urea leads to 4(5 ...
S. I. Zav'yalov +2 more
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Imidazolinon i sulfonilureja herbicidi
1991Prikazane su fizikalno-kemijske i biološke karakteristike dviju relativno novih skupina herbicida: imidazolinona i sulfonilureje. Detaljno je prikazana povijest, sinteza, mehanizmi djelovanja, spektar djelovanja na korove, mehanizmi selektivnog učinka na kulture, stanje i registracija pojedinih predstavnika skupine u Hrvatskoj.
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Structure‐activity relationships among the imidazolinone herbicides
Pesticide Science, 1990AbstractThe structure of the imidazolinone herbicides consists of three distinct moieties: the imidazolinone ring, the carboxylic acid and the backbone. The effect of changes in each of these on herbicidal activity, crop selectivity and AHAS enzyme inhibition has been studied.
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