Biological control of earhead caterpillar, Helicoverpea armigera Hubner in sorghum
DOI:
https://doi.org/10.48165/Keywords:
Helicoverpa armigera, Nomuraea rileyi, sorghum, biopesticidesAbstract
A field experiment was conducted with biopesticides viz., Nomurae rileyi (Farlow) Samson and NPV of Helicoverpa armigera (HNPV) and compared with chemical control with Melathian 5% @ 30 kg.ha-1 for the management of ear head caterpillar (H. armigera) in sorghum ecosystem of University of Agricultural Sciences, Dharwad. The mycoinsecticide N. rileyi was highly infective at both the dosages 1x108 conidia per litre & 2x108 conidia per litre against H. armigera as compared to Ha NPV 250 LE per hectare and chemical control in mitigating the pest population as well as in obtaining the higher yield.
References
Armes NJ DR Jadhav KR DeSouza. 1996 A survey of insecticide resistance In Helicoverpa armigera in the Indian subcontinent. Bulletin of Entomological Research 86:499- 514
Hegde R. 2001 Exploitation of Nomurae rileyi (Farlow) Samson against important Lepidopterous pests of potato, cotton and chickpea. Ph.D.Thesis University of Agricultural Sciences, Dharwad, India, 161pp.
King EG Coleman RJ. 1989 Potential for biological control of Heliothis species. Annual Review of Entomology 34:53-75
Patil RK. 2001 Ecofriendly approaches for the management of Spodoptera litura (Fabricius) in groundnut. Ph.D.Thesis University of Agricultural Sciences, Dharwad 157pp.
Romeis JT Shanower G Zebitz CPW. 1999 Trichogramma egg parasitism of Helicoverpa armigera on pigeonpea and sorghum in southern India, Entomologia Experimentalis et Applicata 90:59-81
Ramegowda GK. 2005 Epizootiology and utilization of Nomurae rileyi (Farlow) Samson in pest suppression. Ph.D.Thesis University of Agricultural Sciences, Dharwad, India, 113pp.
