Pathogenecity of Metarhizium anisopliae on Helicoverpa armigera larvae instars

Studies on pathogenicity of M. anisopliae against Ist - VIth instar H. armigera larvae revealed that larval mortality. The effect of Metarhizium anisopliae spore/ml against Helicoverpa armigera larval instars was significantly higher recorded showed that in the results revealed that all the treatments were significantly larval mortality. The results revealed that all the treatments were significantly higher effective in larval mortality as compared to other larval instars. The data recorded on 4, 6, 8 11 and 14 day after pathogencity of various larval instars in the Ist instar of H. armigera with 1.8 x 109 spores suspension, was the best Ist instars larva H. armigera per cent mortality by M. anisopliae up to (35.63) followed by 73.39 (85.69) (98.37) and (100.0) production was significantly recorded.

The increased use of conventional chemical pesticides over the years has not only contributed to an increase in food production, but also has resulted in adverse effects on the environment and non-target organisms. In view of these side effects, the necessity for sustainable crop production through eco-friendly pest management technique is being largely felt in the recent times.

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Abida Nasreen and Ghulam Mustafa (2000) Biology of Helicoverpa armigera (Hubner) Reared in Laboratory on Natural Diet, Pakistan Journal of Biological Sciences, 3(10): 1668-1669. Gopalakrishnan, C. and Narayanan, K. (1988) Occurrence of two-entomofungal pathogens, Metarhizium anisopliae (Metsch.) Sorokin, var. minor Tulloch and N. rileyi (Farlow) Samson on Heliothis armigera (HUbner) (Noctuidae, Lepidoptera), Current Science, 57: 867-868. Hafiza, T. G., Shafqat, S., Fawad, Z. A. K. (2014) Entomopathogenic Fungi as effective insect pest management tactic: A review, Applied Sciences and Business Economics, 1(1): 10-18. Lord, C. J. (2005) Low humidity, moderate temperature and descant dust favour efficacy of B. bassiana for their lesser grain borer, Rhinopertha dominica, Biological Control, 34(1): 155-159. Muhammad Tahir, Waqas Wakil, Abid Ali, Shahbaz Talib Sahi (2018) Pathogenicity of B. bassiana and M. anisopliae isolates against larvae of the polyphagous pest H. armigera, E. Generalis, 38(1) doi:10.1127/entomologia/2018/0460. Muhammad Tahir, Wakil, Waqas, Ali, Abid, Sahi, Shahbaz Talib (2019) Pathogenicity of Beauveria bassiana and Metarhizium anisopliae isolates against larvae of the polyphagous pest Helicoverpa armigera, Entomologia Generalis, 38(3): 225-242 N. Revathi, G. Ravikumar, M. Kalaiselvi, D. Gomathi and C. Uma (2011) Pathogenicity of three Entomopathogenic fungi against Helicoverpa armigera (Hub.), J. of Plant Pathol Microbiol., 1: 1. Panse, V. G. and Sukahtme, P. V. (1978) Statistical method for agricultural research, ICAR, New Delhi, pp: 347. Prasad, C. S. and Pal Rishi (2014) Mass production and economics of Entomopathogenic fungus, Beauveria bassiana, Metarhizium anisopliae and Verticillium lecanii on agricultural and industrial waste, Sch. J. Agric. Vet. Science, 1(1): 28-32. Puri, S. N. (1995) Present status of IPM in India, National Seminar on IPM in Agriculture, 29-30 Dec. 1995, Nagpur, Maharashatra. Puzari, K. C., Sharmah, D. K. and Hazarika, L. K. (1997) Medium for mass production of B. bassialla, Vuillemin, Jour. of Biol.Control, 11: 96-100. Radha, K., Nirula, K. K. and Menon, K. V. P. (1955) The green muscardine disease of Oryctes rhinoceros, Indian Coconut Journal, 9: 83-88. Ramanujam, B., Rangeshwaran, R., Sivakmar, G., Mohan, M., Yandigeri, M. S. (2014) Management of insect pests by microorganisms, Proceedings of Indian National Science Academy, 80(2): 455-471. Vega, F. E., Goettel, M. S., Blackwell, M., Chandler, D., Jackson, M. A., Keller, S. (2009) Fungal Entomopathogens: New insights on their ecology, Fungal Ecology, 2: 149- 159. Vijayavani, S., Reddy, KRK and Jyothi, G. (2010) Identification of virulent isolate of Metarhizium anisopliae (Metschin) Sorokin (Deuteromycotina: Hyphomycetes) for the management of H. armigera (Hubner), Jour. of Biopesticides, 3(3): 556- 558. Vinod Kumar and P. N. Chowdhry (2004) Virulence of entomopathogenic fungi B. bassiana and M. anisopliae against tomato fruit borer, H. armigera, Indian Phytopath., 57(2): 208-212. Wadyalkar, S. R., D. L. Wasule, S. J. Bhoyte and R. M. Wadaskar (2003) Mass multiplication and formulation of Metarhizium anisopliae (Metsch.) Sorokin, BioI. Control, 17(2): 141-146. Ribeiro et al. (2010) Alcaeorrhynchus grandis has been reported from Brazil, Colombia, Mexico, and the southern United States.