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Gulsar Banu, J.
- Evaluation of Fungal Pathogens for the Management of Mealybugs in Bt Cotton
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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.
- Effect of Different Storage Conditions on Spore Viability of lecanicillium Lecanii formulations and Infectivity to Mealybug, Paracoccus marginatus
Abstract Views :205 |
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Authors
Affiliations
1 Central Institute for Cotton Research, Regional Station, Coimbatore T.N., IN
1 Central Institute for Cotton Research, Regional Station, Coimbatore T.N., IN
Source
International Journal of Plant Protection, Vol 6, No 2 (2013), Pagination: 334-337Abstract
Talc based formulation of Lecanicillium lecanii, a native entomopathogenic fungus isolated from mealy bug was developed at Central Institute for Cotton Research, Regional Station, Coimbatore. L. lecanii spores produced in sorghum grains, sabouraud dextrose broth with Yeast extract (SDYB) and potato dextrose broth (PDB) were formulated in talc and stored at room temperature (27+2oC) and refrigerator (9+2oC). Viability and virulence of spores was monitored at monthly intervals for six months. Among different formulations tested,L. lecanii multiplied on SDY broth and formulated in talc supported maximum viability and virulence. Among two storage temperatures tested, formulation stored at 9+2oC supported maximum viability and virulence. In general, spore viability was reduced with increase in storage duration and temperature.Keywords
Formulations, Lecanicillium Lecanii, Spore Viability, Storage Temperatures, Virulence, Mealybug- Pathogenesis of Entomopathogenic Fungus, Metarhizium anisopliae (Metsch.) Sorokin., on Mealybug, Paracoccus marginatus (Williams and Granara De Willink) (Homoptera:Pseudococcidae)
Abstract Views :283 |
PDF Views:148
Authors
M. Amutha
1,
J. Gulsar Banu
1
Affiliations
1 ICAR-Central Institute for Cotton Research (CICR), Regional Station,Coimbatore–641 003, Tamil Nadu, IN
1 ICAR-Central Institute for Cotton Research (CICR), Regional Station,Coimbatore–641 003, Tamil Nadu, IN