LIFE TABLE STUDIES OF SPOTTED BOLLWORM EARIAS VITTELLA (FAB.) ON COTTON

L.N. Mohapatra*

Indian Journal of Agricultural Research

Chief EditorV. Geethalakshmi
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Indian Journal of Agricultural Research, volume 41 issue 1 (march 2007) : 63 - 66

LIFE TABLE STUDIES OF SPOTTED BOLLWORM EARIAS VITTELLA (FAB.) ON COTTON

L.N. Mohapatra*

Affiliations

¹All India Co-ordinated Cotton Improvement Project, R.R.T.T.S.S. Umerkote - 764073 , District Nawarangpur, Orissa, India

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Cite article:- Mohapatra* L.N. (2025). LIFE TABLE STUDIES OF SPOTTED BOLLWORM EARIAS VITTELLA (FAB.) ON COTTON. Indian Journal of Agricultural Research. 41(1): 63 - 66. doi: .

ABSTRACT

The life table studies of spotted bollworm Earias vittella (Fab.) on cotton were conducted for three generations corresponding to the vegetative and early flowering, peak flowering and fruiting and boll development and maturation stages of the crop. Based on ‘K’ values, unknown factors (predation and adverse climatic factors) were identified as key mortality factors during larval phase II of E.vittella. The natural enemies viz., Trichogramma chilonis and Rogadinae sp. also contributed some degree mortality in the pest population. The negative values of trend index (

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REFERENCES

Atwal, A.S. and Bain, S.S. (1974). Applied Animal Ecology. Kalyani Publishers, New Delhi.
Harcourt, D.G. (1969). Ann. Rev. Ent., 14: 175-196.
Jayswal, A.P. and Sundaramurthy, V.T. (1992). In: Achievements of All India Coordinated Cotton Improvement Project. Silver Jubilee (1967-1992), (Basu, A.K. and Narayan, S.S. eds.), September 17-19, 1992, Nagpur, pp. 117-151.
Mohapatra, L.N. (2002). Ph.D.Thesis, Orissa University of Agriculture and Technology, Bhubaneswar, pp.191.
Morris, R.F. and Miller, C.A. (1954). Canadian J. Zool., 32: 283-301.
Nanthagopal, R. and Uthamswamy, S. (1989). Crop. Protec., 8: 133-136.
Patel, M.P. and Bilapate, G.G. (1984). J. Maharashtra Agric. Univ., 9: 153-157.
Sohi, G.H. (1964). Pest of cotton. In: Entomology in India a Silver Jubilee Number of Indian J. Ent., : 11-48.
Southwood, T.R.E. (1978). Ecological Methods with Particular Reference to the Study of Insect Population. The English Language Book Society and Chapman and hall, London.
Suryawanshi, D.S. et al. (2001). J. Entomol. Res., 25(4): 249-262.

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[
atwal_1974] Atwal, A.S. and Bain, S.S. (1974). Applied Animal Ecology. Kalyani Publishers, New Delhi.

[2] Harcourt, D.G. (1969). Ann. Rev. Ent., 14: 175-196.

[3] Jayswal, A.P. and Sundaramurthy, V.T. (1992). In: Achievements of All India Coordinated Cotton Improvement Project. Silver Jubilee (1967-1992), (Basu, A.K. and Narayan, S.S. eds.), September 17-19, 1992, Nagpur, pp. 117-151.

[4] Mohapatra, L.N. (2002). Ph.D.Thesis, Orissa University of Agriculture and Technology, Bhubaneswar, pp.191.

[5] Morris, R.F. and Miller, C.A. (1954). Canadian J. Zool., 32: 283-301.

[6] Nanthagopal, R. and Uthamswamy, S. (1989). Crop. Protec., 8: 133-136.

[7] Patel, M.P. and Bilapate, G.G. (1984). J. Maharashtra Agric. Univ., 9: 153-157.

[8] Sohi, G.H. (1964). Pest of cotton. In: Entomology in India a Silver Jubilee Number of Indian J. Ent., : 11-48.

[9] Southwood, T.R.E. (1978). Ecological Methods with Particular Reference to the Study of Insect Population. The English Language Book Society and Chapman and hall, London.

[10] Suryawanshi, D.S. et al. (2001). J. Entomol. Res., 25(4): 249-262.

LIFE TABLE STUDIES OF SPOTTED BOLLWORM EARIAS VITTELLA (FAB.) ON COTTON

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