Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-29T10:09:52.119Z Has data issue: false hasContentIssue false

Planting Date, Insect Damage and Yield of Cowpea in Western Nigeria

Published online by Cambridge University Press:  03 October 2008

D. Nangju
Affiliation:
International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
K. F. Nwanze
Affiliation:
International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
S. R. Singh
Affiliation:
International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria

Summary

With the exception of leafy and daylength-sensitive cultivars, cowpea (Vigna unguiculata (L.) Walp), produced larger yields in the first season (April-July) than in the second season (September-November) at Ibadan, Western Nigeria, whether or not the crop was protected by insecticide. The populations of major cowpea pests were low at the start of the rainy season and reached their peaks in September or October. The implications of these results in insect control strategy are discussed.

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

Booker, R. H. (1965). Bull. Entomol. Res. 55, 663.CrossRefGoogle Scholar
Enyi, B. A. C. (1974). Expl Agric. 10, 87.CrossRefGoogle Scholar
Ezedinma, F. O. C. (1966). Trop. Agric., Trin. 43, 83.Google Scholar
Ezedinma, F. O. C. (1967). J. West Afr. Sci. Ass. 12, 45.Google Scholar
IITA (1973). 1972 Rep. Grain Legume Imp. Program, Ibadan, Nigeria, 78.Google Scholar
IITA (1975). 1974 A. Rep. Ibadan, Nigeria, 199.Google Scholar
Koehler, C. S. & Mehta, P. N. (1972). J. Econ. Entomol. 65, 1421.CrossRefGoogle Scholar
Metcalf, C. L., Flint, W. P. & Metcalf, R. L. (1962). Destructive and Useful Insects. New York: McGraw-Hill.Google Scholar
Nangju, D. (1976). J. Agric. Sci., Camb. 87, 225.CrossRefGoogle Scholar
Nangju, D. (1979). Proc. Int. Symp. Grain Legume Pests, IITA, Ibadan, Nigeria (in press).Google Scholar
Taylor, T. A. (1969). J. Econ. Entomol. 62, 900.CrossRefGoogle Scholar
Taylor, T. A. & Ezedinma, F. O. C. (1964). Niger. Agric. J. 1, 8.Google Scholar