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Showing 1 to 18 of 18 for “"Alachlor"”.
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Simulation of concentration effects on mobility and persistence of alachlor
… of concentration on mobility and persistence of alachlor was investigated. The investigation was divided into two components: soil column study and model study. In the soil column study, PVC pipe was hand packed to a depth of 30 cm with Catlin silt loam soil. The surface of the soil columns was …
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Effect of formulation on the movement of atrazine, alachlor, and metribuzin in a coarse-textured soil
Atrazine, alachlor and metribuzin are three widely used herbicides which have been detected in groundwater. Increased concerns over pesticide use have stimulated interest in developing formulations that reduce environmental risks such as groundwater contamination. The effect of controlled release …
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Pesticide Adsorption and Degradation Properties as Influenced by Iron Oxidation State in Clay Minerals
… of oxidized or reoxidized clays. Fourteen alachlor degradation products were produced by the reduced clay suspensions, whereas only two appeared in the oxidized clay. For trifluralin and ethalfluralin, many more degradation products appeared in the reduced clay than in the oxidized or …
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Race studies and effects of soybean root leachate and herbicides on hatching and emergence of Heterodera glycines
… were observed. Soil-applied herbicides alachlor, imazaquin, metolachlor, metribuzin, trifluralin, and vernolate were evaluated under laboratory conditions at concentrations of 0.0, 1.0, 3.0, 5.0, and 10.0 ppm of active ingredient in root leachate of 7-day-old Williams 82 soybean. …
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Disposal Methods for Diluted Herbicide Rinsates
… oryzalin, trifluralin, fluchloralin, butylate, alachlor, metolachlor, 2,4-D DMA {dimethyl amine salt}, chloramben (ammonium salt). These compounds are the principal herbicides used in Illinois soybean and corn fields.
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Monitoring pesticides in the soil, groundwater, and submarine groundwater discharge of the Chesapeake Bay Area
… separate groundwater samples were analyzed for: alachlor, atrazine, carbofuran, cyanazine, and metolachlor. Pesticide analysis of groundwater and seepage meter water was carried out by immunoassay and by solid phase extraction (SPE) with octadecyl bonded extraction disks followed by GC/ECD. …
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Uptake, Translocation, Metabolism, and the Effects of Metolachlor on Yellow Nutsedge and Corn
… of this study were to evaluate the effects of alachlor {2-chloro-2',6'-diethyl-N-(methoxymethyl)acetanilide} and metolachlor {2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide} on yellow nutsedge tuber viability, determine the depth of placement in the soil where uptake …
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The Toxicity of Pesticides to Mammalian Cells as Altered by Redox-Modified Smectites
… the toxicity of pesticides to mammalian cells. Alachlor, oxamyl, dicamba, and 2,4-D were reacted with both oxidized and reduced ferruginous smectite (SWa-1). The supernatant from each pesticide/clay mixture was separated by centrifugation, filter sterilized, and used in multiple toxicity assays …
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A Comparison of the Herbicidal Activity of Several Chloroacetamides and Their Effects on Protein Synthesis in Carrot and Soybean Cell Suspension Cultures
… -chlor-N-(ethoxymethyl)-6'-ethyl-O-acetoluidide}, alachlor {2-chloro-2',6'-diethyl-N-(methoxymethyl) acetanilide}, metolachlor {2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide} and xylachlor {2-chloro-N-(2,3-dimethylphenyl)-N-(1-methylethyl)acetamide} were compared in …
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Monitoring pesticides in the groundwater and submarine groundwater discharge of the Eastern Shore of Virginia
… of the most commonly used pesticides: atrazine, alachlor, carbofuran, cyanazine, and metolachlor. Pesticides were detected in only 16 samples. All the detections were at low concentrations, with only one being over 1 μg/L. The study concluded that if pesticides were being transported by the …
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Environmental considerations for interactions between agricultural herbicides and nitrogen fertilizers in water
… individual agricultural herbicides (atrazine, alachlor, dicamba, glufosinate, glyphosate, metolachlor, and trifluralin). The pH of samples was adjusted to investigate the effect of acidic conditions since the nitrosating agent is formed at an acidic pH. The results were then analyzed to detect …
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Geographic Information System Methodologies to Evaluate Relationships Between Land use and Groundwater Quality in South Central Kentucky
… sources (fecal coliform, nitrate, phosphorus, alachlor, atrazine, and simazine). Although the regression models resulted in relatively low r2 values (ranging from 0.076 to 0.169), future revisions of the models may increase these values. Potential revisions to the statistical models could …
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Development of sorption technology for the cleanup of pesticide contaminated wastewater
… centers, such as atrazine, simazine, alachlor, and metolachlor. Solid state fermentation of carbofuran in a peat matrix showed that a large amount of carbofuran residues became incorporated into organic matter. The formation of carbofuran-7-phenol was necessary for incorporation to …
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Atrazine Contamination in a Rural Source-Water Supply: Spa Lake, Lewisburg, Kentucky
… three commonly used pesticides (atrazine, alachlor, and simazine) were repeatedly being detected at several sites. Of the three compounds, atrazine, a triazineclass herbicide widely used in Kentucky to control broad leaf and grassy weeds in row crops such as corn, drew the most interest. …
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Analysis of the Effect of Two Tillage Systems on Soybean (Glycine Max (L.) Merrill) Growth
… 2.4-3.1% organic matter and a pH of 6.7. Lasso (alachlor) and Sencor (metribuzin (4-amino-6-(1,1-dimethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one)) (pre-emergence herbicides) were used for weed control at rates 3.365 kg ha$\sp{-1}$ and 0.630 kg ha$\sp{-1}$ respectively. Prior to planting, NT …
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Preemergence activity of chloroacetamide herbicides on a multiple herbicide-resistant population of waterhemp (amaranthus tuberculatus)
… 15 herbicide except non-encapsulated acetochlor, alachlor, and pyroxasulfone, which provided 75, 67, and 56% control, respectively, 28 days after treatment (DAT). Greenhouse dose-response experiments with S-metolachlor revealed a large difference in herbicide effective dose values between …
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Effect of herbicides on Cylindrocladium crotalariae and the cylindrocladium black rot (CBR) disease of peanut
… at the same rates also increased growth, whereas alachlor, benefin, diphenamid, vernolate and 2,4-DB were found to have no consistent effect. Treatment of infested soil with dinitramine at 1, 5, 10, 50, and 100 ug/g soil had no significant effects on populations of C. crotalariae microsclerotia …