Results 241 to 250 of about 1,927,903 (291)

Novel Formulations of an Organic Acid Herbicide

Journal of ASTM International, 2011
Abstract Herbicides sold commercially to producers of organic crops have low specific activity. The potential exists to increase the herbicidal activity of the more active candidate herbicides with appropriate and acceptable adjuvants and emulsifiers.
Donald Penner, Robert Coleman, Jan Michael   +2 more
openaire   +1 more source

Influence of the organic complex concentration on adsorption of herbicide in organic modified montmorillonite

Journal of Environmental Science and Health, Part B, 2017
This study was undertaken to determine the impact of the organic complex concentration on the adsorption of herbicide (acetochlor) at the surface of the organic modified montmorillonite. In this work, natural montmorillonite from Bogovina (Boljevac municipality, Serbia) was used for organic modification. Cation-exchange capacity of this montmorillonite
Kaludjerovic, Lazar, Tomić Z., Đurović-Pejčev, Rada, Vulic, Predrag, Ašanin, Darko   +4 more
openaire   +5 more sources

Photodegradation of new herbicide HW-02 in organic solvents

Journal of Environmental Sciences, 2010
HW-02 is a new organophosphates herbicide which is discovered and developed in China. The kinetics and mechanism of HW-02 photodegradation in the organic solvents were studied at 25 degrees C under the irradiation of ultraviolet light. The results showed that photochemical reaction of HW-02 in organic solvents such as n-hexane, methanol, dimethyl ...
Zhongbin, Lu, Zhiguang, Hou, Xiumei, Wang, Siwei, Wang, Yanyan, Shang, Xing, Yuan   +5 more
openaire   +2 more sources

Concentrations of Herbicides in Wetlands on Organic and Minimum‐Tillage Farms

Journal of Environmental Quality, 2018
Wetlands are abundant throughout the agricultural landscape of central Saskatchewan, Canada, and the biota present in these wetlands may be vulnerable to the toxic effects of pesticides used on nearby crops. We hypothesized that herbicide concentrations would be higher in wetlands on minimum‐tillage farms than on organic (no herbicide use) farms, and ...
David B, Donald, Allan J, Cessna, Annemieke, Farenhorst   +2 more
openaire   +2 more sources

Adsorption of the Herbicide Simazine by Montmorillonite Modified with Natural Organic Cations

Environmental Science & Technology, 2003
Three organic cations with a natural origin (L-carnitine, L-cystine dimethyl ester, and thiamine) were introduced at different loadings in the interlayer of a low-charge montmorillonite, and the performance of the modified clays as adsorbents of the herbicide simazine was investigated using batch adsorption-desorption experiments.
Cruz-Guzmán, Marta, Celis, Rafael, Hermosín, M.C., Cornejo, J.   +3 more
openaire   +3 more sources

Inorganic and Organic Clays as Carriers for Controlled Release of the Herbicide Hexazinone

Journal of Agricultural and Food Chemistry, 2002
The risk of ground water contamination resulting from rapid leaching of highly soluble pesticides can be minimized through the application of the pesticide adsorbed on a matrix or carrier, which limits the amount of pesticide immediately available for undesirable losses.
Celis, Rafael, Hermosín, M.C., Carrizosa, M. J., Cornejo, J.   +3 more
openaire   +3 more sources

Evaluation of an Organic Semiconductor as a Sensor of Volatilized Herbicides

Journal of Environmental Quality, 2000
AbstractThe use of a ytterbium bisphthalocyanine Langmuir‐Blodgett film sensor for the study of the volatilization of the herbicides imazamethabenz‐methyl, tri‐allate, and terbutryn is evaluated. The dynamic response of the sensor to the herbicides is analyzed using a model that relates the response of an isotropic sensor to the total immobilized ...
J. Álvarez‐Benedí, J. Souto, J. A. De Saja, S. Bolado   +3 more
openaire   +1 more source

The Influence of Soil Organic Matter on the Phytotoxicity of Herbicides

Weeds, 1962
The toxicity indices to cotton of 12 soil-incorporated herbicides were highly and positively correlated with soil organic matter, cation exchange capacity, exchangeable calcium, moisture equivalent, free drainage value and total exchangeable bases. The characteristics of the responses indicate that adsorption of the 12 herbicides on organic matter ...
R. P. Upchurch, D. D. Mason
openaire   +1 more source

Improved herbicide efficacy for organically grown vegetables

Organic Agriculture, 2015
Natural weed control alternatives that are currently approved for organic crop production are mostly nonselective essential oils used as postemergence, burn-down products. Their low efficacy requires multiple applications of high volumes to achieve good weed control.
John O’Sullivan, Rene Van Acker, Robert Grohs, Rachel Riddle   +3 more
openaire   +1 more source

Chronic Toxicosis of Sheep from the Organic Herbicide Di-Allate

American Journal of Veterinary Research, 1972
SUMMARY Yearling sheep were dosed with di-allate for 29 weeks. Three dosage levels (10, 25, and 50 mg./kg./day) resulted in toxicosis. Cumulative effects were not detected in sheep given the lO-mg./kg. dose; however, acquired tolerance in sheep given the larger doses was evident.
J S, Palmer, M, Haufler, L M, Hunt, J C, Schlinke, C E, Gates   +4 more
openaire   +2 more sources