PERSISTENCE OF QUINALPHOS IN COTTON SEED, LINT AND SOIL UNDER SUBTROPICAL CONDITIONS OF PUNJAB, INDIA
PAU Regional Reserach Station, Abohar–152 116; Department of Entomology, Punjab Agricultural University, Ludhiana–141 004
Author(s):
P. K. ARORA, KOUSIK MANDAL, SARBJIT KAUR2, R. S. BATTU AND BALWINDER SINGH
Abstract:
Single application of quinalphos at flowering stage was made on cotton @ 500 g.a.i. ha–1 and 1000 g.a.i. ha–1 and the residues were estimated in the cottonseed, lint and soil separately using gas liquid chromatography equipped with nitrogen phosphorus detector (NPD) at the Regional Research Station, PAU, Abohar. The interval between application of the insecticides and 1st pick was 60 days. The residues of quinalphos at both tested dosages on cotton seed, lint and soil were found to be below determination limit of 0.01 mg kg–1.