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Sub-lethal Dose Reponses of Native Polyhydroviruses and Spinosad for Economical and Sustainable Management of Spodoptera litura in Pakistan

Sub-lethal Dose Reponses of Native Polyhydroviruses and Spinosad for Economical and Sustainable Management of Spodoptera litura in Pakistan

Jam Nazeer Ahmad1,2*, Rashid Mushtaq1, Samina Jam Nazeer Ahmad1,2*Mubasher Ahmad Malik1, Mujahid Manzoor1, Muhammad Tahir2,  Zubair Aslam4, Sumaira Maqsood5, Ishita Ahuja3 and Atle M. Bones3

1Integrated Genomics, Cellular, Developmental and Biotechnology Lab, PARS, Department of Entomology, University of Agriculture, Faisalabad, 38000, Pakistan
2Plant Stress Physiology and Molecular Biology Lab, PARS, Department of Botany, University of Agriculture, Faisalabad, 38000, Pakistan
3Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
4Department of Agronomy, University of Agriculture, Faisalabad, 38000, Pakistan
5Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan

*  Corresponding author: jam.ahmad@uaf.edu.pk; saminatmalik@yahoo.com

 

ABSTRACT

In the present investigation, laboratory trials were conducted to investigate the synergistic, additive or antagonistic effect of three sub-lethal dose rates (2 x 103, 4.5 x 103, and 6 x 103 PIB/Larva) of native isolated Nucleopolyhydrovirus (NPV) from Spodoptera litura and Spinosad (0.01 ppm) against 3rd and 4th instar larvae collected from three different geographical areas of Punjab (Pakistan). A difference in larval mortality, pupation, adult emergence and egg ecluson was observed. The higher but sub-lethal dose rate of NPV with Spinosad exhibited synergistic interaction, while the rest of the combinations were found additive in all the tested populations. The results confirmed the population of S. litura from Rahim Yar Khan Region least susceptible, and that of Faisalabad highly susceptible. It may be inferred that the mixtures of the correct sub-lethal doses of Spinoad and NPV in combination may be used against destructive pests such as S. litura. This strategy also has a great potential in insecticide resistance management (IRPM) against such pests in vegetable and major crop growing areas of Pakistan.
 

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Pakistan Journal of Zoology

June

Vol. 52, Iss. 3, Pages 825-1224

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