Results 111 to 120 of about 300 (151)

Adsorption of the herbicide acifluorfen on humic acids

Science of The Total Environment, 1992
Abstract In this study, the sorptive capabilities of two humic acids for removing the acifluorfen from herbicide solutions were evaluated. Various experiments at constant pH (3.5, 5.0, 7.0) and constant humic acid concentration but variable acifluorfen concentration were used to prepare plots representative of the adsorption of the herbicide by humic
RUGGIERO P., MININNI R., CRECCHIO, Carmine, PIZZIGALLO, Maria   +3 more
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Resistance to the herbicide acifluorfen

Trends in Plant Science, 2000
The first wave of herbicide resistant crops included those with resistance to glyphosate, glufosinate and bromoxynil, representing three different modes of action: disrupting aromatic amino acid biosynthesis, ammonium assimilation and photosynthesis.
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Mitochondrial involvement in the mode of action of acifluorfen

Pesticide Biochemistry and Physiology, 1984
Abstract The herbicidal action of acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid} was studied with greened and expanded discs from cotyledons of cucumber ( Cucumis sativus L.). Discs were floated on various treatment solutions for 20 hr in darkness before exposure to 400 μE m −2 sec −1 of white light. Herbicide damage, as
Stephen O. Duke, Kevin C. Vaughn, Ronald L. Meeusen   +2 more
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Effects of acifluorfen-methyl on cucumber cotyledons: Porphyrin accumulation

Pesticide Biochemistry and Physiology, 1988
Abstract The nitrodiphenyl ether herbicide acifluorfen-methyl and the pyridine derivative LS 82-556 induce porphyrin accumulation in green cucumber cotyledons. When experiments are done with intact plants absorbing the herbicide through the roots, that accumulation is light-dependent.
Matringe, Michel, Scalla, R.
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Mechanisms of Acifluorfen Interaction with Humic Acid

Soil Science Society of America Journal, 1997
Abstract The interaction of the herbicide acifluorfen (AC; 5‐[2‐chloro‐4‐(trifluoromethyl)phenoxy]2‐nitrobenzoic acid) with a humic acid (HA) extracted from an undisturbed Ah horizon of a Haploboroll, was studied at different pHs. Both the HA and AC were methylated to determine the possible role of O‐containing functional groups in ...
Luisella Celi, Mara Gennari, Shahamat U. Khan, Morris Schnitzer   +3 more
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Effect of metal-binding ability on the adsorption of acifluorfen on soil

Journal of Agricultural and Food Chemistry, 1993
The adsorption of acifluorfen, the sodium salt of 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid, on six soils of various physical and chemical properties as well as its dependence on the exchangeable cation (Ca 2+ and Na + ) and on soil pH was studied. Adsorption isotherms conformed to the Freundlich equation.
PUSINO, Alba, LIU WP, FANG Z, GESSA C.
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Identification of spore-forming strains involved in biodegradation of acifluorfen

Research in Microbiology, 1996
We isolated and identified four spore-forming bacteria from activated sludges and soil, three of which were able to degrade acifluorfen. Biochemical characteristics, DNA base composition and DNA-DNA homology indicated that the degrading strains belonged to the species Bacillus thuringiensis, Clostridium perfringens and Clostridium sphenoides.
M. Fortina, A. Acquati, R. Ambrosoli
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Effect of Soil Properties on Adsorption and Desorption of Acifluorfen

Journal of Agricultural and Food Chemistry, 1994
The adsorption and subsequent desorption of acifluorfen were investigated in five soils of various physical and chemical properties. The adsorption and desorption of acifluorfen were essentially dependent upon pH, organic carbon content, and ammonium oxalate extractable iron content of the soil but not on clay content.
Mara Gennari, Michele Negre, Emanuele Raimondo   +2 more
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Adsorption of the Herbicide Acifluorfen on Soil Humic Acids

Journal of Agricultural and Food Chemistry, 1996
The amount of acifluorfen adsorbed on eight soil humic acids has been determined in a pH range from 1.6 to 6 at the initial concentration of 40 mg L-1 using a batch equilibrium method. Most of the adsorption took place between pH 2.5 and 3.5. More than 70% acifluorfen was adsorbed at pH 4.5, indicating that adsorption was promoted by the protonation ...
Luisella Celi, Michèle Nègre, Mara Gennari   +2 more
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Influence of Temperature and Relative Humidity on the Activity of Acifluorfen

Weed Science, 1981
The influence of temperature and relative humidity on the activity of acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid} on common cocklebur (Xanthium pensylvanicumWallr.) and common ragweed (Ambrosia artemisiifoliaL.) was studied in growth chambers. Treatment at high relative humidity (85 ± 5%) resulted in a significant increase
Ronald L. Ritter, Harold D. Coble
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