1Department of Soil Science, Chaudhary Charan Singh Haryana Agricultural University, Hisar-125 004, India
2Department of Entomology, Chaudhary Charan Singh Haryana Agricultural University, Hisar-125 004, India
Department of Chemistry and Physics, Chaudhary Charan Singh Haryana Agricultural University, Hisar-125 004, India
*Corresponding author E-mail: beena@hau.ernet.in, beenakumari.958@rediffmail.com
Online published on 2 July, 2014.
Persistence of bifenthrin in a sandy loam soil under okra crop is reported. Commercial formulation of bifenthrin (Talstar 10 EC) @ 25 and 50 g a.i. ha−1 was applied in field. Soil samples drawn on 0 (1 h), 3, 7, 15, 30, 60 and 90 days of treatments were analyzed by GC-ECD equipped with capillary column. The residues at both the doses dissipated by almost 90% in 15 days with half-life values of 2.40 and 2.95 days in soil at the two doses respectively and followed the first order kinetics. The values of correlation coefficient for degradation kinetics in soil were -0.9832 to -0.9773 for the two doses, respectively.
Bifenthrin, soil, residues, half-life
