Insecticide Resistance Studies Against Helicoverpa armigera from Faisalabad, Pakistan
Insecticide Resistance Studies Against Helicoverpa armigera from Faisalabad, Pakistan
Muhammad Saleem1*, Dilbar Hussain1, Tamseela Mumtaz2, Saeed Ahmad3, Muhammad Ihsan Ullah3, Muhammad Luqman3, Muhammad Shafqat4, Fiaz Hussain5, Muhammad Sajjad6, Kaynat Shahzadi2, Muhammad Jawad Saleem1 and Muhammad Hasnain1
ABSTRACT
Helicoverpa armigera is considered one of the economically important polyphagous and cosmopolitan insect in Pakistan. It causes serious damages to cotton crops and has negative impact on economy of the country. At the present study, theeffects of different new generation insecticides and insect growth regulators were evaluatedagainst 3rd instar larvae of H. armigera. Three insecticides viz., pyriproxyfen 10.8%EC,chlorantraniliprole 20SC, emamectin benzoate 1.9EC, and one insect growth regulator (IGR), lufenuron, 50EC was tested against H. armigera larvae by using leaf dip bioassay method under laboratory conditions at Entomological Research Institute, Faisalabad. On the basis of LC50 values chlorantraniliprole and emamectin benzoate was proved most effective insecticide to control this polyphagous pest as compared to pyriproxyfen and lufenuron which showed high resistance against H. armigera. Estimated LC50 values of emamectin benzoate on these larvae after 3, 6, 12, 24 and 48 hours were 1457.354, 1268.327, 390.215, 300.947 and 122.711 respectively.
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September 2024
Vol.40, Iss. 3, Pages 680-1101
