Results 311 to 320 of about 91,550 (356)

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

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

Control of Nutsedge with Organic Arsenical Herbicides

Weed Science, 1971
Nonradioactive and14C-labeled arsenical herbicides were applied to foliage of purple nutsedge (Cyperus rotundusL.) and yellow nutsedge (Cyperus esculentusL.) grown under greenhouse and growth chamber conditions. Disodium methanearsonate (DSMA) controlled purple nutsedge better at 20 and 29 C than at 13 C.
P. E. Keeley, R. J. Thullen
openaire   +1 more source

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

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

Ecotoxicological assessment of glyphosate-based herbicides: Effects on different organisms

Environmental Toxicology and Chemistry, 2016
Abstract   Glyphosate-based herbicides are the most commonly used worldwide because they are effective and relatively nontoxic to nontarget species. Unlimited and uncontrolled use of such pesticides can have serious consequences for human health and ecological balance.
Laís, de Brito Rodrigues, Rhaul, de Oliveira, Flávia Renata, Abe, Lara Barroso, Brito, Diego Sousa, Moura, Marize Campos, Valadares, Cesar Koppe, Grisolia, Danielle Palma, de Oliveira, Gisele Augusto Rodrigues, de Oliveira   +8 more
openaire   +2 more sources

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
Kaluderović, Lazar M., Tomić, Zorica P., Đurović-Pejčev, Rada, Vulić, Predrag J., Asanin, Darko P.   +4 more
openaire   +4 more sources

Organic Matter Reactions Involving Herbicides in Soil

Journal of Environmental Quality, 1972
AbstractDocumentary evidence is presented in support of the view that organic matter plays a major role in the adsorption of herbicides in soil, and that organic matter content is usually the soil factor most directly related to herbicidal behavior. Major attention is given to the nature and origin of humic and fulvic acids, with special emphasis being
openaire   +1 more source

Interactions of Herbicides with Water-Soluble Soil Organic Matter

Weed Science, 1991
Interactions of water-soluble soil organic matter (WSSOM) with the herbicides bromacil, metribuzin, alachlor, diquat, and paraquat were examined to determine if these interactions can improve predictions of herbicide leaching potential. A high-performance liquid chromatography gel filtration column was used to separate WSSOM extracts from four mineral ...
Karrie L. Pennington, Sidney S. Harper, William C. Koskinen   +2 more
openaire   +1 more source

The herbicide sindone B disrupts spindle microtubule organizing centers

Pesticide Biochemistry and Physiology, 1992
Abstract Sindone B is classified as a “mitotic disrupter herbicide”, but little information is published on the physiological effects of this structurally unique compound. Onion root tips treated with various concentrations of sindone B were examined by light microscopy following Feulgen staining, immunofluorescence of tubulin, and electron ...
Larry P. Lehnen, Kevin C. Vaughn
openaire   +1 more source