Field evaluation of nucleopolyhedrosis virus and some biorational insecticides against Helicoverpa armigera Hubner (Noctuidae: Lepidoptera) |
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| Affiliation: | 1. Department of Entomology, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan 60800, Pakistan;2. Department of Plant Protection, Karachi Ministry of National Food Security, Pakistan;3. Institute of Plant Protection, MNS-University of Agriculture, Multan 60000, Pakistan;4. Department of Entomology, Bahauddin Zakariya University, Multan 60800, Pakistan;5. Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan;6. Qauid-i-Azam University, Islamabad, Pakistan;7. Cotton Research Institute, Multan, Pakistan;8. Biology Department, Faculty of Science, Taibah University, Al-Sharm, Yanbu El-Bahr 46429, Saudi Arabia |
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| Abstract: | American bolloworm, Helicoverpa armigera Hubner (Noctuidae: Lepidoptera) is considered as a major pest of various crops all over the world. It is mainly controlled by indiscriminate use of synthetic insecticides in the world due to which this pest developed resistance to most of the available insecticides. Therefore, in the current study, the efficacy of virulent strain of HaNPV (0.5 × 109 PIB/ml) alone and in combination with recommended doses of spintoram (20 g/100 L of water) and emamectin benzoate (200 ml/100 L of water) was tested in field. The combination of HaNPV with spintoram and emamectin benzoate 100% reduced the larval population as compared to emamectin benzoate and HaNPV alone. This suggested that the combination of spintoram and emamectin benzoate with HaNPV could be used in field to manage the infestation of H. armigera. |
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| Keywords: | NPV Cotton Entomopathogenic virus Resistance |
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