Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-25T21:40:03.729Z Has data issue: false hasContentIssue false

Economic Importance of Rice Stem-borer (Diopsis macrophthalma) in Malawi

Published online by Cambridge University Press:  03 October 2008

H. R. Feijen
Affiliation:
University of Malawi, Zomba, Malawi†

Summary

Experiments were carried out in which injuries caused by Diopsis macrophthalma larvae were simulated. The results show that these larvae can have negative or positive effects on rice (number of stems, height, maturation time, number of ears and yield), depending on time and level of attack, growing conditions and variety. The results suggest that under normal conditions the effect on number of stems, height, number of ears and yield is positive, and only becomes negative if poor growing conditions are combined with a late, heavy attack. An experiment with Diopsids was carried out to evaluate the simulation experiments.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1979

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

Abu, J. F. (1972) MSc thesis, University of Ghana.Google Scholar
Bardner, R. & Fletcher, K. E. (1974). Bull. ent. Res. 64, 141.CrossRefGoogle Scholar
Brenière, J. (1969). L'Agronomic Trop. 24, 906.Google Scholar
Descamps, M. (1957). J. Agric. Trop. Bot. appl. 4, 83.Google Scholar
Jordan, F. J. (1966). Rep. W. Afr. Rice Res. Stn, Rokupr, Sierra Leone.Google Scholar
Morgan, H. G. & Abu, J. F. (1973). Ghana Jnl Agric. Sci. 6, 185.Google Scholar
Shillito, J. F. (1976). J. Soc. Biblphy nat. Hist. 8, 65.Google Scholar