Hostname: page-component-745bb68f8f-v2bm5 Total loading time: 0 Render date: 2025-01-08T15:15:29.241Z Has data issue: false hasContentIssue false
  • English
  • Français

Response of Cowpea (Vigna Unguiculata) to Spacing in the Savanna and Rainforest Zones of Nigeria: Response Surface Analysis

Published online by Cambridge University Press:  03 October 2008

A. Odulaja  and
G. O. Kayode
A. Odulaja
Affiliation:
National Cereals Research Institute, Moor Plantation, PMB 5042, Ibadan, Nigeria
G. O. Kayode
Affiliation:
National Cereals Research Institute, Moor Plantation, PMB 5042, Ibadan, Nigeria
Get access Rights & Permissions [Opens in a new window]

Summary

A re-analysis of a two-year study designed to investigate the effect of spacing on the yield of two cowpea cultivars in the savanna and rainforest zones of Nigeria confirms plant density and spacing recommendations for the savanna zone while contradicting all but intra-row spacing recommendations for the forest zone. An inter-row spacing of 60 cm and intra-row spacing of 9 cm or closer could be used for improved seed yield in the savanna zone, while a plant density between 120 000 and 166 666 plants ha−1 with an inter-row spacing of 30 cm would be optimum for cowpea production in the forest zone.

Type
Research Article
Information
Experimental Agriculture , Volume 23 , Issue 1 , January 1987 , pp. 63 - 68
Copyright
Copyright © Cambridge University Press 1987

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

Berry, G. (1967). A mathematical model relating plant yield with arrangement for regularly spaced crops. Biometrics 23: 505–515.CrossRefGoogle ScholarPubMed
Bleasdale, J. K. A. & Nelder, J. A. (1960). Plant population and crop yield. Nature 188: 342.CrossRefGoogle Scholar
Holliday, R. (1960). Plant population and crop yield. Nature 186: 22–24.CrossRefGoogle Scholar
Kayode, G. O. & Odulaja, A. (1985). Response of cowpea (Vigna unguiculata) to spacing in the savanna and rainforest zones of Nigeria. Experimental Agriculture 21: 291–296.CrossRefGoogle Scholar
Nangju, D., Little, T. M. & Anjorin, O. A. (1975). Plant density and spatial arrangement on seed yield of cowpea (Vigna unguiculata L. Walp.). Journal of American Society of Horticultural Science 100: 467–470.CrossRefGoogle Scholar
Nelder, J. A. (1966). Inverse polynomials, a useful group of multifactor response functions. Biometrics 22: 128–141.CrossRefGoogle Scholar
Willey, R. W. & Heath, S. B. (1969). The quantitative relationships between plant population and crop yield. Advances in Agronomy 21: 281–321.CrossRefGoogle Scholar