We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Soil adsorption studies of a rice herbicide, cyhalofop-butyl, in two texturally different soils of India.
- Authors
Sondhia, Shobha; Khare, Rishi
- Abstract
The ability of herbicides to be adsorbed by the soil and sediment and their tendency to be desorbed are some of the most important factors affecting soil and water contamination. Therefore, a sorption study was conducted to evaluate the adsorption of cyhalofop-butyl, butyl (2 R)-2-[4-(4-cyano-2-fluorophenoxy) phenoxy] propanoate, in the sandy clay loam and clayey soils using a batch equilibrium method. The adsorption of cyhalofop-butyl was found positively related with the clay and organic carbon content. Freundlich constants ( K) of cyhalofop-butyl in the clayey and sandy clay loam were found to be 13.39 and 2.21, respectively. Sorption coefficients ( K) and distribution coefficients ( K) were found to be 265.38 and 2,092.79, and 1.38 and 11.48, for sandy clay loam and clayey soils, respectively. The adsorption isotherm suggested a relatively higher affinity of cyhalofop-butyl to the adsorption sites at low equilibrium concentrations. The low value of the soil organic carbon partition coefficient ( K) of cyhalofop-butyl in the sandy loam soil suggested its weaker adsorption in soil and thus increased its risk of mobility into water sources; hence, it should be used judiciously to prevent groundwater contamination
- Subjects
INDIA; SOIL absorption &; adsorption; CLAY soils; SOIL texture; RICE soils; SOIL pollution; SOILS; HERBICIDE content of soils
- Publication
Environmental Monitoring & Assessment, 2014, Vol 186, Issue 10, p5969
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-014-3832-4