Title of article :
INTEGRATION OF TOLERANCE OF BT COTTON VARIETIES WITH INSECTICIDES AGAINST SPOTTED BOLLWORM, EARIAS INSULANA (BOISD.) AND E. VITTELLA (FAB.) (NOCTUIDAE: LEPIDOPTERA)
Author/Authors :
KHAN, SAID MIR Gomal University - Faculty of Agriculture - Department of Entomology, Pakistan , SAEED, IMRAN Gomal University - Faculty of Agriculture - Department of Entomology, Pakistan , SHAH, MAHMOOD Gomal University - Faculty of Agriculture - Department of Economics, Pakistan , SHAH, SYED FAHAD Agricultural University - Department of Entomology, Pakistan , MIR, HINA Quaid-i-Azam University - Faculty of Plant Sciences - Department of Biochemistry, Pakistan
Abstract :
To study the comparative efficacy of the insecticides viz., bifenthrin (Talstar 10 EC), spinosad (Tracer 240 SC), lambda cyhalothirn (Karate 2.5 EC), flubendiamide (Belt 480 SC) and spinothelin (Radiant 125 SC) on four cultivars of cotton were evaluated against spotted bollworm and integrated with the host plant resistance of BT cotton cultivars. These insecticides were sprayed twice i.e. on August 6 and September 4, 2008. The cotton varieties Bt-101, CIM-496, Bt-121, and MNH-786 were sown following two factors split plot protocol in Randomized Complete Block Design replicated three times in the experimental field of Cotton Research Centre, Sahiwal during 2008. Spinothelin was found highly effective against spotted bollworm followed by Spinosad. Bt cottons showed more resistance as compared to non-Bt varieties. The variety Bt-101 showed minimum infestation level of squares, flowers and bolls followed by Bt-121.
Keywords :
Bt cotton , genetic resistance , chemical control , insecticides , IPM
Journal title :
Sarhad Journal of Agriculture
Journal title :
Sarhad Journal of Agriculture
