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Venkateswarlu, N. C.
- Evaluation of Metarhizium (Nomuraea) rileyi (Farlow) Samson isolates against Spodoptera litura F. under in vitro conditions
Authors
1 Department of Entomology, S. V. Agricultural College, Tirupati – 517502, Andhra Pradesh, IN
2 Department of Entomology, IFT, RARS, Tirupati, Andhra Pradesh, IN
3 Department of Plant Pathology, S. V. Agricultural College, Tirupati – 517502, Andhra Pradesh, IN
4 Department of Statistics and Computer Applications, S. V. Agricultural College, Tirupati – 517502, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 35, No 1 (2021), Pagination: 33-36Abstract
Fifteen isolates of Metarhizium (Nomuraea) rileyi collected from field populations of Spodoptera litura (F.) and Spodoptera frugiperda J. E. Smith in different crops across different agroclimatic zones of Andhra Pradesh were evaluated for their pathogenicity against third instar larvae of S. litura at the Biocontrol Laboratory, Regional Agricultural Research Station, Tirupati, India. Virulence was tested by applying conidial suspension @ 1x107 spores ml–1 on the groundnut leaves on which the larvae were allowed to feed. The cumulative mean larval mortality to the extent of 75.00 to 85.00% was observed with isolates viz. Nr.Yj.KZ, Nr.Dp.KZ, Nr.Rt.KZ, Nr.Rd.HATZ, Nr.Pp. HATZ and Nr.Cp.HATZ whereas the isolates Nr.Ik.SRZ, Nr.Vg.SRZ, Nr.Pl.SZ, Nr.Ag.SZ, Nr.Np.SRZ, Nr.Rp.SZ, Nr.Rg.NCZ, Nr.Hv.SRZ and Nr.Cd.SZ recorded 65.00 to 73.33% mortality.
Keywords
Agroclimatic zones, larval mortality, Metarhizium rileyi, pathogenicity, Spodoptera lituraFull Text
References
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