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Agricultural Science Digest, volume 22 issue 4 (december 2002) : 291 - 292

ACTIVITY OF PLATYGASTER ORYZAEON VARIABLE HOST (ORSEDIA ORYZAEJ DENSITY UNDER AGROCLIMATIC ZONE OF RAIPUR (M.P.)

D.K. Rana, D.J. Pophaly, v.K. Dubey, YK. Yadu

Affiliations

¹Department of Entomology, Indira Gandhi Krishi Vishwavidyalaya, Raipur - 492012, India

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Cite article:- Rana D.K., Pophaly D.J., Dubey v.K., Yadu YK. (2024). ACTIVITY OF PLATYGASTER ORYZAEON VARIABLE HOST (ORSEDIA ORYZAEJ DENSITY UNDER AGROCLIMATIC ZONE OF RAIPUR (M.P.). Agricultural Science Digest. 22(4): 291 - 292. doi: .

ABSTRACT

Behaviour of Platygaster oryzae at variable levels of Orseolia oryzae incidence in rice germ plasm was studied during kharif 1998 at Raipur. At least 5.5 per cent host incidence was necessary to start parasitic acitivity and is inherently capable of regulating the population of its host. Data on this rice gene pool with respect to various graded level of gall midge incidence statistically showed + vely shewed distribution (r1 = 0.06282) while flatness of mode turn out to be leptokurtic (r2 = 1.1159). These statistical value indicates the presence of highly susceptible gall midge genes in this germ plasm.

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REFERENCES

Chandrakar, H.K. et al. (1989). Oryza, 26: 393-395.
Gangrade, G.A. et al (1978). into Rice Res. NeWsl., 3(6): 16.
Prakash Rao, et al (1971). Oryza, 8(12): 337-44.
Rao, V.K. (1964). Survey for natural enemies of pest of paddy and other miscellaneous pest and their natural enemies.
Technical report covering the period 25th July 1961 24th July 1964. Commonwealth Institute of Biological Control Bangalore, pp. 55-56.
Shrivastava, S.K. et al (1987). Trop. Pest Mgmt., 33: 52-54.
Snedecor, GW. and William, G.C. (1967). Statistical Methods Oxford & TBH Publishing Co. Pvt. Ltd. New Delhi.

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ACTIVITY OF PLATYGASTER ORYZAEON VARIABLE HOST (ORSEDIA ORYZAEJ DENSITY UNDER AGROCLIMATIC ZONE OF RAIPUR (M.P.)

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