Hostname: page-component-7c8c6479df-7qhmt Total loading time: 0 Render date: 2024-03-28T21:45:44.924Z Has data issue: false hasContentIssue false

Effects of whitefly, Bemisia tabaci genn. On cotton yield and associated components

Published online by Cambridge University Press:  19 September 2011

N. Venugopal Rao
Affiliation:
Regional Agricultural Research Station, Lam, Guntur 522 034, India
A.S. Reddy
Affiliation:
Regional Agricultural Research Station, Lam, Guntur 522 034, India
R. Ankaiah
Affiliation:
Regional Agricultural Research Station, Lam, Guntur 522 034, India
S. Mukundan
Affiliation:
Cotton Technological Laboratory (ICAR) Regl. Centre, Lam, Guntur
Get access

Abstract

Varietal differences with respect to yield losses due to whitefly, Bemisia tabaci Genn. attack were observed at the “sooty-mould level” and “economic threshold (ET) level” of infestation. At the peak infestation level leading to sooty-mould development, the losses varied from 21.7 to 31.8% in boll numbers, 10.3 and 23.7% in boll-weight; 25.9 and 48.9% in seed cotton yield; 12.4 and 153% in seed oil and 29.4 and 66.5% in seed germination among the group of promising new cultures viz., LK 861, LPS 141 and L 389 and other group of commonly cultivated varieties viz., JKHY 1, MCU 5 and ADB 10050, respectively. Besides, the fibre qualities like length, strength, fineness and maturity were also found to be adversely affected.

Type
Articles
Copyright
Copyright © ICIPE 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Abdul Nasr, S. and El Nahal, A.K.M. (1969) Seasonal population of Hemiptera-Homoptera infesting cotton plants in Egypt. Bull. de la Soc. Entomol. D'Egypte. 52, 371389.Google Scholar
Bindra, O.S. (1981) Insect resistance in cotton in Sudan. In Durable Resistance in Crops (Edited by Lamberti, F., Waller, J.M., Graaf, N.A. and Vander, ), pp. 227229. Plenum Press, New York.Google Scholar
Hussain, M.A. and Trehan, K.N. (1940) Final report on the scheme of investigations on the whitefly of cotton in Punjab. Indian J. Agric. Sci. X, 101109.Google Scholar
Johnson, M.W., Tescano, N.C., Reynolds, H.T., Sylvester, E.S., Kido, K. and Natawick, E.T. (1982) Whiteflies cause problems for Southern California growers. Calif. Agric. 35, 2426.Google Scholar
Mound, L.A. (1965) Effect of leaf hair on cotton whitefly populations in the Sudan Gezira. Emp. Cotton. Gr. Rev. 42, 3340.Google Scholar
Musuna, A.C.Z. (1983) A potentially serious pest, whitefly. Zimbabwe Agric. J. 80, 143146.Google Scholar
Reddy, A.S., Rosaiah, B. and Rao, T.B. (1985) Control of cotton whitefly in Andhra Pradesh. Indian Farming. Nov. 1985. pp. 1922.Google Scholar
Singh, J., Butter, N.S. and Madan, V.K. (1983) Assessment of losses due to whitefly Bemisia tabaci Genn. in Hirsutum cotton. Indian J. Entomol. Spl. issue-II, 362366.Google Scholar
Sukhija, H.S., Butter, N.S. and Singh, J. (1986) Determination of the economic threshold of whitefly Bemisia tabaci Genn., on American cotton in the Punjab. Trop. Pest Manage. 32, 134136.CrossRefGoogle Scholar
Wangboonkong, S. (1981) Chemical control of cotton pests in Thailand. Trop. Pest Manage. 27, 495500.Google Scholar