Efficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera Hubner
The experiment was conducted during May 2022 at College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Pantnagar, Uttarakhand, India. The Steinernema abbasi PN-1 is a local isolate of entomopathogenic nematode isolated from the soil collected from Uttarakhand, I...
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Puspa Publishing House
2024-11-01
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| Series: | International Journal of Economic Plants |
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| Online Access: | https://ojs.pphouse.org/index.php/IJEP/article/view/5451 |
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| author | P. Vireesha R. Pandey M. Shashikala N. Mehra S. Kumar |
| author_facet | P. Vireesha R. Pandey M. Shashikala N. Mehra S. Kumar |
| author_sort | P. Vireesha |
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The experiment was conducted during May 2022 at College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Pantnagar, Uttarakhand, India. The Steinernema abbasi PN-1 is a local isolate of entomopathogenic nematode isolated from the soil collected from Uttarakhand, India. Under the present study, virulenceof Steinernema abbasi PN-1 against different stages of Helicoverpa armigera Hubner were tested. Virulence studies of S. abbasi PN-1 against H. armigera proved that all larval stages and pupae of H. armigera were found susceptible to the IJs of S. abbasi PN-1. There was a positive correlation between insect mortality and the nematode concentration. The S. abbasi PN-1 caused 100% larval mortality at 48–60 h of post treatment in all tested doses in laboratory. Among the larval instars, 4th instar larvae of H. armigera were more susceptible with a median lethal concentration (LC50) value of 24.37 IJs larva-1 and the median lethal time (LT50) values of 25.63 hours. The 2nd instar larvae was least susceptible with an LC50 value of 78.96 IJs larva-1 and LT50 values of 41.33 hours. The pupal stage was less susceptible than the larval stage with the LC50 value of 98.3 IJs larva-1. Our results showed that S. abbasi PN-1 can be used as efficient biological control agents against H. armigera with further field studies.
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| format | Article |
| id | doaj-art-443d931e2c8b4cf1a0edbf7ed4a357f4 |
| institution | DOAJ |
| issn | 2349-4735 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Puspa Publishing House |
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| series | International Journal of Economic Plants |
| spelling | doaj-art-443d931e2c8b4cf1a0edbf7ed4a357f42025-08-20T02:39:21ZengPuspa Publishing HouseInternational Journal of Economic Plants2349-47352024-11-0111Nov, 410.23910/2/2024.5725bEfficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera HubnerP. Vireesha0R. Pandey1M. Shashikala2N. Mehra3S. Kumar4Dept. of Entomology, College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Uttarakhand (263 145), IndiaDept. of Entomology, College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Uttarakhand (263 145), IndiaDept. of Entomology, College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Uttarakhand (263 145), IndiaDept. of Entomology, College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Uttarakhand (263 145), IndiaDept. of Entomology, College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Uttarakhand (263 145), India The experiment was conducted during May 2022 at College of Agriculture, G. B. Pant University of Agriculture & Technology, U. S. Nagar, Pantnagar, Uttarakhand, India. The Steinernema abbasi PN-1 is a local isolate of entomopathogenic nematode isolated from the soil collected from Uttarakhand, India. Under the present study, virulenceof Steinernema abbasi PN-1 against different stages of Helicoverpa armigera Hubner were tested. Virulence studies of S. abbasi PN-1 against H. armigera proved that all larval stages and pupae of H. armigera were found susceptible to the IJs of S. abbasi PN-1. There was a positive correlation between insect mortality and the nematode concentration. The S. abbasi PN-1 caused 100% larval mortality at 48–60 h of post treatment in all tested doses in laboratory. Among the larval instars, 4th instar larvae of H. armigera were more susceptible with a median lethal concentration (LC50) value of 24.37 IJs larva-1 and the median lethal time (LT50) values of 25.63 hours. The 2nd instar larvae was least susceptible with an LC50 value of 78.96 IJs larva-1 and LT50 values of 41.33 hours. The pupal stage was less susceptible than the larval stage with the LC50 value of 98.3 IJs larva-1. Our results showed that S. abbasi PN-1 can be used as efficient biological control agents against H. armigera with further field studies. https://ojs.pphouse.org/index.php/IJEP/article/view/5451Helicoverpa armigera, Infective Juveniles, Steinernema abbasi PN-1 |
| spellingShingle | P. Vireesha R. Pandey M. Shashikala N. Mehra S. Kumar Efficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera Hubner International Journal of Economic Plants Helicoverpa armigera, Infective Juveniles, Steinernema abbasi PN-1 |
| title | Efficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera Hubner |
| title_full | Efficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera Hubner |
| title_fullStr | Efficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera Hubner |
| title_full_unstemmed | Efficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera Hubner |
| title_short | Efficacy of Entomopathogenic Nematode, Steinernema abbasi PN-1 against Helicoverpa armigera Hubner |
| title_sort | efficacy of entomopathogenic nematode steinernema abbasi pn 1 against helicoverpa armigera hubner |
| topic | Helicoverpa armigera, Infective Juveniles, Steinernema abbasi PN-1 |
| url | https://ojs.pphouse.org/index.php/IJEP/article/view/5451 |
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