Refine your search
Collections
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Sonai Rajan, T.
- Evaluation of Fungal Pathogens for the Management of Mealybugs in Bt Cotton
Abstract Views :255 |
PDF Views:134
Authors
Affiliations
1 Central Institute for Cotton Research, Regional Station, Coimbatore – 641 003, Tamil Nadu, IN
1 Central Institute for Cotton Research, Regional Station, Coimbatore – 641 003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 26, No 1 (2012), Pagination: 92-96Abstract
Three entomopathogenic fungi (Verticillium lecanii, Beauveria bassiana and Metarhizium anisopliae) along with two standard insecticides (acephate and chlorpyriphos) were evaluated for their effectiveness in the field of Bunny Bt (Cry IAC) cotton neem oil + detergent (Nirma) powder and detergent powder alone during 2007-08&2008-09 against two mealybugs viz., Phenococcus solenopsis and Paracoccus marginatus. The results revealed that B. bassiana, V. lecanii and M. anisopliae brought out a reduction of 39.1, 30.9 and 28.2 per cent incidence and 69.0, 59.0 and 23.1 per cent population of mealybugs respectively, while, the insecticides acephate and chlorpyriphos brought out a reduction of 93.8 and 87.1 per cent incidence and 97.8 and 95.3 per cent population, respectively. Detergent powder brought out a reduction of 51.7 per cent incidence and 82.4 per cent population, while detergent powder + neem oil brought out a reduction of 20.9 and 36.1 per cent, respectively. Observation on the activity of predators revealed that B. bassiana, V. lecanii and M. anisopliae brought out a reduction of 61.3, 51.6, and 6.5 % coccinellids and 33.7, 15.2&22.8 % spiders as against 54.8 and 42.4 % respectively in the standard insecticide acephate. Treatments with neem oil+ detergent powder and detergent powder alone did not reduce coccinellid population, however, reduced spider population by 22.6&13.0 percent respectively. All the treatments recorded significantly higher yield over control during 2008 - 09 and the increase in yield over control ranged from 18.0 to 43.0 %.Keywords
Mealybug, Phenococcus solenopsis, Paracoccus marginatus, Pathogenicity, Beauveria bassiana, Verticillium lecanii and Metarhizium anisopliae.References
- Banu JG, Surulivelu T, Amutha M, Gopalakrishnan N. 2010. Laboratory evaluation of insecticides and pesticides against Phenococcus solenopsis and Paracoccus marginatus infesting cotton. J Biopesticide. 3: 343 – 346.
- Curkovic T, Gary Burett, Araya E. 2007. Evaluation of insecticide activity of two agricultural detergents against the long–tailed mealybug, Pseudococcus longispinus (Hemiptera: Pseudococcidae) in laboratory. Agri Tech (Chile). 67: 422 – 430.
- Lacey LA, Frutos R, Kaya HK, Vail P. 2001. Insect pathogens as biological control agents: Do they have a future? Biol control 21: 230 – 248.
- Lemawork S. 2008. Evaluation of entomopathogenic fungi and hot water treatment against enset ischolar_main mealybug, Cataenococcus ensete, Williams and Matile-Ferrero (Homoptera: Pseudococcidae) on enset. M.Sc., thesis, Department of plant sciences, Awassa college of agriculture, School of Graduate Studies Hawassa University, Awassa, Ethiopia. 87 p.
- Monga D, Kumar R, Vijander Pal, Jat MC. 2009. Mealybug, new pest of cotton crop in Haryana: A survey. J Insect Sci. 22: 101-103.
- Suresh S, Jothimani R, Sivasubramanian P, Karuppuchamy P, Samiyappan R, Jonathan EI. 2010. Invasive mealybug of Tamil Nadu and their management. Karnataka J Agric Sci. 23: 6 –9.
- Tanwar RK, Jeyakumar P, Monga D. 2007. Mealybugs and their management. Technical Bulletin 19, National Centre for Integrated pest Management, New Delhi. 12 p.
- Tanwar RK, Jeyakumar P, Vennila S. 2010. Papaya mealybug and its management strategies, Technical Bulletin 22, National Centre for Integrated Pest Management, New Delhi, 22 p.
- Pathogenicity of Nomuraea rileyi (Farlow) Samson Isolates against Spodoptera litura (Fabricius)
Abstract Views :246 |
PDF Views:119
Authors
Affiliations
1 Department of Agricultural Entomology, Agricultural College and Research Institute, Madurai 625104, Tamil Nadu, IN
1 Department of Agricultural Entomology, Agricultural College and Research Institute, Madurai 625104, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 23, No 1 (2009), Pagination: 17-20Abstract
Investigations were carried out to assess the pathogenicity of some isolates of the entomopathogenic fungus, Nomuraea rileyi, against different instars of Spodoptera litura (F.) under in vitro conditions. Bioassays on S. litura with N. rileyi isolates revealed that PDBC isolate was most virulent against S. litura and also had lower LC50 and LT50 values than DOR and local isolates of N. rileyi, indicating that it was more effective than DOR and local isolates against S. litura.Keywords
Nomuraea rileyi, Pathogenicity and Spodoptera litura.References
- Aoki, J. 1989. A key to Insect Pathogenic Fungi. Zenkoku Noson Kyoiku Kyokai, Tokyo, Japan. 280p.
- Basu, A. C. 1981. Effect of different foods on the larval and post larval development of moth of Prodenia litura (Fab.). Journal of Bombay Natural History Society, 44: 275–288.
- Britto, A. J. 1980. Juvenomimetic and antifeedant properties of some plant extracts on Spodoptera litura (Fab.) (Lepidoptera: Noctuidae). M.Sc. (Ag.) Thesis, Tamil Nadu Agricultural University, Coimbatore. 59 p.
- Gopalakrishnan, C. and Mohan, K. S. 1997. Seasonal incidence of the entomopathogenic fungus Nomuraea rileyi associated with noctuid pests of cabbage and banana ecosystems. In: National Symposium on Pest Management in Horticultural Crops (Oct. 15-19), Bangalore.
- Manjula, K. and Krishna Murthy, K. V. M. 2005. Efficacy of Nomuraea rileyi against different instars of Spodoptera litura and Helicoverpa armigera. Annals of Plant Protection Sciences, 13: 347–350.
- Mousa, M. A., Zaker, M. A. and Koppy, F. 1980. Abundance of cotton leaf worm, Prodenia litura (Fab.) in relation to host plants. I. Host plants and their effect on biology. Bulletin of Entomological Society, Egypte, 44: 241–251.
- Muthukrishnan, N., Ganapathy, N., Nalini, R. and Rajendran, R. 2005. Pest Management in Horticultural Crops. New Madura Publishers, Madurai. 325 p.
- Navi, S. S., Patil, R. K., Kulkarni, K. A., and Rachappa, V. 2006. Efficacy of Nomuraea rileyi (Farlow) Samson, neem seed kernel extract (NSKE), quinalphos and varietal resistance for the management of Spodoptera litura (Fab.). Journal of Entomological Research, 30: 207–212.
- Pandey, K. A. and Kanujia, K. 2005. Effect of different grain media on sporulation, germination and virulence of Beauveria bassiana (Balsamo) Vuillemin against Spodoptera litura (Fab.) larvae. Journal of Biological Control, 19: 129–133.
- Samson, R. A., Evans, H. C. and Latge, J. P. 1988. Atlas of Entomopathogenic Fungi. Springer Verlag, Berlin.
- Sridhar, V. and Prasad, V. O. 1996. Life table studies on natural population of Spodoptera litura on groundnut. Annals of Plant Protection Sciences, 4: 142–147.
- Vimala Devi, P. S. and Prasad, Y. G. 1994. Conidia production of entomogenic fungus, Nomuraea rileyi and its evaluation for the control of Spodoptera litura on Ricinus communis. Journal of Invertebrate Pathology, 63: 145-150.
- Vimala Devi, P. S., Prasad, Y. G. and Chowdary, A. 2002. Effect of drying and formulation of conidia on virulence of the entomofungal pathogen Nomuraea rileyi (F.) Samson. Journal of Biological Control, 16: 43–48.