Dissipation of fentrazamide in soil under aerobic conditions was studied. Fentrazamide was extracted with 0.1 N HCl: acetone (1:1 v/v) followed by partition and cleanup. Separation was done on ODS-II column with mobile phase acetonitrile: water (70:30 v/v). Recovery varied from 74.51 % to 90.10 % percent in soil. Dissipation followed first order kinetics with monophasic pattern. Half life in soil was 9.02 days. Calibration curves were linear over the range of 0.05–1.00 μg mL−1 and RSD was 1.82 %. LOD and LOQ were 0.002 and 0.005 μg g−1 for soil. No residues in soil and crop were observed at harvest.
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Financial assistance and analytical grade fentrazamide and its 50 WP formulation provided by M/s Bayer AG, (Now Bayer cropsciences) Germany is duly acknowledged.
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Tandon, S., Pujari, A. & Sand, N.K. Degradation of Fentrazamide Herbicide in Soil Under Aerobic Condition. Bull Environ Contam Toxicol 89, 312–315 (2012). https://doi.org/10.1007/s00128-012-0697-5