Laboratory efficacy of HaNPV against pod borer, Helicoverpa armigera (Hubner) infesting chickpea
- Advances in Plants & Agriculture Research
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C Divya,1 DM Jethva,2 HG Kanara3
Department of Entomology, College of Agriculture, Junagadh Agricultural University, India - DM Jethva, Associate Research Scientist, Biocontrol Research Laboratory, Department of Entomology, Junagadh Agricultural University, India
- HG Kanara, Assistant Research Scientist, Grassland Research Station, Dhari, Junagadh Agricultural University, India
Abstract
The experiment on laboratory efficacy of HaNPV against H. armigera infesting chickpea revealed that there was gradual increase in larval mortality along with increase in dosage of HaNPV. The trend followed a pattern of higher the dosage of inoculum, higher was the larval mortality. All the treatments caused the mortality in 3rd instar larvae of H. armigera. The highest larval mortality was obtained in the treatment of HaNPV @ 0.875ml/l (95.52%), which was at par with the treatment of HaNPV 0.750 ml/l (90.00%). It was also recorded that in all the treatments, higher larval mortality was recorded on 3rd to 5th day after treatment.
Keywords
H. armigera, lepidoptera, obligate parasite, petri dish, mortality
