1AINP on Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Directorate of Research, Research Complex Building, Kalyani, Nadia, West Bengal, India
2Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India
3Department of Agricultural Biochemistry, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India
4Department of Spices and Plantation Crops, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India
5Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India
*Address for correspondence Rajib Karmakar, AINP on Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Directorate of Research, Research Complex Building, Kalyani, Nadia, West Bengal, India. Email: Rajibc183@rediffmail.com
Online published on 23 November, 2015.
The dissipation kinetics of propaquizafop [2-isopropylideneamino-oxyethyl (R)-2-{4-(6-chloroquinoxalin-2-yloxy) phenoxy} propionate] was studied in water at three different pH (4.0, 7.0 and 9.2) along with two doses (1 and 2 μg ml−1) under laboratory condition. The water samples at regular intervals were collected, extracted and analyzed upto 90 days. The initial deposits of propaquizafop at different pH ranged from 0.31μg ml−1 to 0.90 μg ml−1 and 0. 48 μg ml−1 to 1.78 μg ml−1 respectively for lower and higher dose. The half-life of propaquizafop varied from 1.66 days to 75.25 days and dissipation was found to be dependent on pH irrespective of doses.
Propaquizafop, residue, dissipation, pH, water
