Hostname: page-component-8448b6f56d-mp689 Total loading time: 0 Render date: 2024-04-23T12:32:42.567Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of Defoliation and Topping on Semi-Upright Cowpeas [Vigna Unguiculata (L.) Walp.] in a Humid Tropical Environment

Published online by Cambridge University Press:  03 October 2008

F. O. C. Ezedinma
F. O. C. Ezedinma
Affiliation:
Department of Plant/Soil Science, University of Nigeria, Nsukka, Nigeria
Get access Rights & Permissions [Opens in a new window]

Summary

The yield of cowpeas could be increased by judicious defoliation of the older leaves or by topping the growing apices at the onset of flowering. Limited defoliation at the pre-flowering stage did not reduce the yield of beans significantly but severe defoliation at any stage prior to maturity drastically reduced yield. Satisfactory yields of cowpea could be obtained by maintaining only about one-half to two-thirds of the potential leaf-area of the plants, suggesting that a reduction in the number and area of leaves, coupled with a better display of the fewer remaining leaves, could make cowpeas more productive than hitherto.

Type
Research Article
Information
Experimental Agriculture , Volume 9 , Issue 3 , July 1973 , pp. 203 - 207
Copyright
Copyright © Cambridge University Press 1973

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

Barua, D. N. (1960). J. agric. Sci. Camb. 55, 413.CrossRefGoogle Scholar
Beevers, L. & Cooper, J. P. (1964). Crop Sci. 4, 139;143.CrossRefGoogle Scholar
Bennett, O. L., Ashley, D. A., Doss, B. D. & Scarsbrook, C. E. (1965). Agron. J. 57, 25.CrossRefGoogle Scholar
Dungan, G. H. (1934). Pl. Physiol. 9, 749.CrossRefGoogle Scholar
Eaton, F. M. (1927). J. Hered. 18, 456.CrossRefGoogle Scholar
Eaton, F. M. (1931). J. agric. Res. 43, 875.Google Scholar
Ezedinma, F. O. C. (1965). Hort. Res. 5, 113.Google Scholar
Faulkner, O. T. & Mackie, J. R. (1933). West African Agriculture. Cambridge: University Press.Google Scholar
Leopold, A. C. (1964). Plant Growth and Development. New York: McGraw Hill.Google Scholar
Lorz, A. P., Wilson, J. W., Keisheimer, E. G. & Perry, V. G. (1955). Bull. Flo. Agric. Exp. Sta. 557.Google Scholar
Miller, J. H. (1960). Am. J. Bot. 47, 532.CrossRefGoogle Scholar
Moss, D. N. & Peaslee, D. E. (1965). Crop Sci. 5, 280.CrossRefGoogle Scholar
Smilde, K. W. (1960). Meded. Landbouw Hogesch. Wageningen 60, 1.Google Scholar
Wienk, J. F. (1963). Meded. Landbouw Hogesch. Wageningen 63, 1.Google Scholar