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Manjula, K.
- Virulence of Nomuraea rileyi in Certain Dry formulations against Third Instar Larvae of Spodoptera Litura (Fab.)
Abstract Views :232 |
PDF Views:151
Authors
K. Swetha
1,
K. Manjula
1
Affiliations
1 Department of Entomology, S.V. Agricultural College, Tirupati, 517 502, Andhra Pradesh, IN
1 Department of Entomology, S.V. Agricultural College, Tirupati, 517 502, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 28, No 2 (2014), Pagination: 109–111Abstract
The virulence of dry formulations of Nomuraea rileyi for different storage conditions was tested against third instar larvae of Spodoptera litura (Fab.). Talc formulations retained the virulence of N. rileyi for relatively longer period (45 per cent mortality after 3 months storage, 30 per cent after 4 months) than other formulations.Keywords
Nomuaea rileyi, Spodoptera litura, Dry Formulations, storage.Full Text
References
- Mallikarjuna DR, Patil RK, Sujay YH, Ramegowda GK. 2010. Development and evaluation of wettable powder and oil based formulations of Nomuraea rileyi (Farlow) Samson against Helicoverpa armigera (Hubner) and Spodoptera litura (Fabricius) J Biol Control 24 (3): 930-941.
- Nagaraja SD. 2005. Effect of formulations of Nomuraea rileyi (Farlow) Samson and spray equipments in the management of tobacco caterpillar in groundnut and pod borer in chickpea ecosystem. M.Sc. (Agri.) Thesis, University of Agricultural Sciences, Dharwad.
- Ramegowda GK. 2005. Aerobiology, epizootiology and utilization of Nomuraea rileyi (Farlow) Samson. Ph. D. Thesis, University of Agricultural Sciences, Dharwad.
- Sharma S, Gupta RBL, Yadav CPS. 1999. Mass multiplication and formulation of entomopathogenic fungi and their efficacy against white grub. J Mycol Pl Pathol. 29(3) : 299-305.
- Testing the Pathogenecity of Nomuraea rileyi (Farlow) Samson against Castor Semilooper, Achaea janata Linnaeus
Abstract Views :208 |
PDF Views:115
Authors
Affiliations
1 Department of Entomology, S.V. Agricultural College, Tirupati 517 502, IN
1 Department of Entomology, S.V. Agricultural College, Tirupati 517 502, IN
Source
Journal of Biological Control, Vol 27, No 4 (2013), Pagination: 349–353Abstract
The larvae of II, III and IV instars of Achaea janata treated with subculture I, II and insect cultures of Nomuraea rileyi indicated larval mortalities to be positively correlated with the concentrations of all the three cultures. First subculture and insect culture were almost equally efficacious in causing the disease. Slightly lowered mortality were recorded with subculture II. Reduction in larval mortality was noticed with advancement of the age in A. janata larvae. Almost 100 per cent larvae were dead with 1x108 spores ml-1 concentration when treated in II intar and it was 5-15 per cent when treated in III and IV instars. However, relatively lower concentrations like 1x104 - and 1x105 spores ml-1 also recorded mortality of 50 per cent and above. The lowest concentration of 1x102 spores ml-1 resulted in 20-30 per cent larval mortality.Keywords
Nomuraea rileyi, Subculture, Insect Cultures, Achaea janata, Pathogenicity, Larval Mortality.Full Text
References
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- Khan AR, Rajak RC. 1986 Influence of relative humidity on Beauveria bassiana infectivity in gram pod borer, Helicoverpa armigera. Symp Pers Mycol Res. 1: 218–223.
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- Evaluation of Metarhizium (Nomuraea) rileyi (Farlow) Samson isolates against Spodoptera litura F. under in vitro conditions
Abstract Views :222 |
PDF Views:202
Authors
Y. Peeru Saheb
1,
K. Manjula
1,
K. Devaki
2,
R. Sarada Jaya Lakshmi
3,
B. Ravindra Reddy
4,
N. C. Venkateswarlu
1
Affiliations
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
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
- Devi PSV, Prasad YG, Chowdary DA, Rao LM, Balakrishnan K. 2003. Identification of virulent isolates of the entomopathogenic fungus Nomuraea rileyi (F.) Samson for the management of Helicoverpa armigera and Spodoptera litura. Mycopathologia. 156:365–373. PMid: 14682464. https://doi.org/10.1023/B:MYCO.0000003578.38483.34
- Dhir BC, Mohapatra HK, Senapathi B. 1992. Assessment of crop loss in groundnut due to tobacco caterpillar, Spodoptera litura (F.). Indian J Plant Prot. 20:215–217.
- Gopalakrishan C. 2000. Susceptibility of Spodoptera litura (Fab.) to different isolates of the entomopathogenic fungus Nomuraea rileyi (Farlow) Samson. Insect Environ. 6(2):52–53.
- Indrayani, IGAA, Prabowo H, Mulyaningsih S. 2013. Pathogenicities of two local isolates of Nomuraea rileyi (Farlow) Samson fungi against Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae). Indones J Agric Sci. 6(2):117–122.
- Krutmuang P, Thungrabeab M. 2017. Efficacy of the entomopathogenic fungus Nomuraea rileyi in the biological control of vegetable pest Spodoptera litura (Lepidoptera: Noctuidae). Int J Environ Rural Dev. 8-2.
- Padanad MS, Krishnaraj PU. 2009. Pathogenicity of native entomopathogenic fungus Nomuraea rileyi against Spodoptera litura. Online. Plant Health Progress. https://doi.org/10.1094/PHP-2009-0807-01-RS
- Ramanujam B, Prasad RD, Narayanan K. 2003. Laboratory evaluation of four entomopathogenic fungi on Helicoverpa armigera (Hubner) and Spodoptera litura (Fabricius). Proceedings of the symposium on Biological control of lepidopteran pests, July 17-18, 2002, Bangalore, India. 181–184.