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Oviposition by Diopsis macrophthalma Dalman (Diptera: Diopsidae) on different rice varieties and development of deadheart

Published online by Cambridge University Press:  10 July 2009

A. M. Alghali  and
E. O. Osisanta
A. M. Alghali
Affiliation:
International Institute of Tropical Agriculture, Ibadan, Nigeria
E. O. Osisanta
Affiliation:
Department of Agricultural Biology, University of Ibadan, Nigeria
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Abstract

Studies were carried out in Nigeria on oviposition and the deadhearts caused by Diopsis macrophthalma Dalm. on ten rice varieties. The varieties were divided into three groups according to the numbers of eggs recorded on them. Strong positive correlations existed between (a) the numbers of eggs and tillers, (b) the numbers of eggs and deadhearts, and (c) the numbers of deadhearts and tillers. Some varieties compensated for damage by the production of new tillers. In the variety Suakoko 8, most of the eggs were confined to the leaf blades in young plants and to the leaf sheaths as the plants grew older. Peak oviposition occurred 30–40 days after transplanting. Some implications of the results for a pest management programme are discussed.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 72 , Issue 4 , December 1982 , pp. 583 - 588
Copyright
Copyright © Cambridge University Press 1982

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References

Abu, J. F. (1972). The bionomics of Diopsis (Diptera: Diopsidae) and of Epilachna similis (Coleoptera: Coccinellidae) on Oryza sativa L. in the Accra plains.—105 pp. M.Sc. thesis, Univ. Ghana, Legon.Google Scholar
Alghali, A. M. (1981). Studies on the relative susceptibility of rice varieties to Diopsis thoracica, West. (Diptera: Diopsidae).—191 pp. Ph.D. thesis, Univ. Ibadan, Nigeria.Google Scholar
Descamps, M. (1957). Recherches morphologiques et biologiques sur les Diopsidae du NordCameroun.—Bull, scient. Minist. Colon. Fr. outre Mer Sect. tech. Agric. trop. no. 7, 154 pp.Google Scholar
Feijen, H. R. (1979). Economic importance of rice stemborer (Diopsis macrophthalma) in Malawi—Exp. Agric. 15, 177–186.CrossRefGoogle Scholar
Onate, B. T. (1965). Estimation of stemborer damage in rice fields.—Philippine Statistics 14, 201–222.Google Scholar