Laboratory simulated dissipation of metsulfuron methyl and chlorimuron ethyl in soils and their residual fate in rice, wheat and soybean at harvest

Journal of Zhejiang University. Science. B
Nilanjan SanyalA Chowdhury

Abstract

Two sulfonylurea herbicides, metsulfuron methyl (Ally 20 WP) and chlorimuron ethyl (Classic 25 WP) were evaluated for their dissipation behaviour in alluvial, coastal saline and laterite soils under laboratory incubated condition at 60% water holding capacity of soils and 30 degrees C temperature was maintained. In field study herbicides were applied twice for the control of grasses, annual and perennials broad leaves weeds and sedges in rice, wheat and soybean to find out the residual fate of both the herbicides on different matrices of respective crops after harvest. Extraction and clean up methodologies for the herbicides were standardized and subsequently analyzed by HPLC. The study revealed that the half-lives of metsulfuron methyl and chlorimuron ethyl ranged from 10.75 to 13.94 d irrespective of soils and doses applied. Field trials with rice, wheat and soybean also revealed that these two herbicides could safely be recommended for application as no residues were detected in the harvest samples.

References


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Citations

Jan 22, 2011·Bulletin of Environmental Contamination and Toxicology·Shashi Bala Singh, Rupak Paul
May 30, 2015·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Yan ZhangBolong Wen
Jun 25, 2010·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Hao ZhangYu Li
Sep 13, 2012·FEMS Microbiology Letters·Seema SharmaPartha P Choudhury
Mar 2, 2012·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Hao ZhangShihong Zhang
Apr 5, 2017·Bulletin of Environmental Contamination and Toxicology·Mohammad MehdizadehMahmoud Roushani

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