Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-06-30T20:23:05.522Z Has data issue: false hasContentIssue false
  • English
  • Français

The performance of cowpea (Vigna unguiculata (L.) Walp) as influenced by weed competition

Published online by Cambridge University Press:  27 March 2009

S. U. Remison
S. U. Remison
Affiliation:
Agronomy/Physiology Division, National Cereals Research Institute, P.M.B. 5042, Ibadan, Nigeria
Get access Rights & Permissions [Opens in a new window]

Summary

Experiments were made in a glasshouse and in the field to estimate the effect of weed competition on cowpea performance.

In the glasshouse experiment, plant height, number of nodes, green leaves, peduncles, weight of poda and seeds of cowpea were decreased by competition from Euphorbia heterophylla and the decrease was greater with increasing density of the weed associate. Generally cowpea did not respond to application of fertilizers. In the field experiment, competition from the natural weed flora affected the number of days to 50% flowering and yield components of the four cowpea varieties studied. The yield of the climbing variety, Dinner, was least affected by competition whilst the semi-erect variety, Ife brown, was the most affected.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 90 , Issue 3 , June 1978 , pp. 523 - 530
Copyright
Copyright © Cambridge University Press 1978

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

Dart, P. J., Huxley, P. A., Eaglesham, A. R. J., Minchin, R. J., Stummerfield, R. I. & Day, J. M. (1977). Nitrogen nutrition of oowpea (Vigna unguiculata). II. Effects of short-term applications of inorganic N on growth and yield of nodulated and non-nodulated plants. Experimental Agriculture 13, 241–52.CrossRefGoogle Scholar
Litav, M. & Seligman, N. (1970). Competition between Oryzopsis holiciformis (M. B.) Hack and annual plants. II. Performance of O. holiciformis and two annuals when grown in mixtures of differing ratios. Israel Journal of Botany 19, 517–28.Google Scholar
Ojehomon, O. O. (1970). A comparison of the vegetative growth, development and seed yield of three varieties of cowpea, Vigna unguiculata (L.) Walp. Journal of Agricultural Science, Cambridge 74, 363–74.CrossRefGoogle Scholar
Rachie, K. O. & Rockwood, W. G. (1973). Research in grain legume improvement. Span 16, 9–12.Google Scholar
Sachansky, S. (1977). Effect of inoculation and NPK fertilizers on soybean (Glycine max (L.) Merr). Tropical Grain Legume Bulletin, no. 7, pp. 16–6.Google Scholar