<< JRScience Home Volume 15 No.3 December 2004 << Back to Volume Home
EVALUATION OF SOME NEW PROMISING COTTON STRAINS AGAINST BOLLWORM COMPLEX
Muhammad Razaq, Muhammad Aslam, Sarfraz Ali Shad, M. Naeem Aslam and Noor Abid Saeed
University College of Agriculture, Bahauddin Zakariya University, Multan.
Abstract: Seven cotton strains, i.e. CIM-78, CIM-80, CIM-81, CIM-84, CIM-95, CIM-96 and Cyto-55 were tested for their resistance against bollworm complex under sprayed and unsprayed conditions at Multan. Cyto-55 and CIM-95 were susceptible, while CIM-78, CIM–80, CIM-81 and CIM-84 were less susceptible to American, Helicoverpa amigera and Spotted, Earias spp. bollworms. CIM-78 and CIM–80 were susceptible to pink bollworm, Pectinophora gossypiella. CIM-78, CIM-80, CIM-81 and CIM-84 produced better yield under both sprayed and unsprayed conditions. Cyto-55, CIM-95 and CIM-96 were tolerant against pink bollworm under both conditions, but produced lower yield.
Keywords: Cotton, Earias spp., Helicoverpa armigera, spray regime.