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Grain Yield Potential of Some Diverse Maize (Zea mays L.) Morphotypes Intercropped with Cocoyam (Xanthosoma sagittifolium)

Published online by Cambridge University Press:  03 October 2008

J. A. Ayuk-Takem  and
H. R. Chhedda
J. A. Ayuk-Takem
Affiliation:
Institute of Agronomic Research, Bambui, PO Box 80, Bamenda, Cameroon and Department of Agronomy, University of Ibadan, Nigeria
H. R. Chhedda
Affiliation:
Department of Agronomy, University of Ibadan, Nigeria
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Summary

Three maize cultivars, BACOA, SAW and COCA, were evaluated when intercropped with cocoyams at a density of 50 000 maize plants and 10 000 cocoyam stands ha−1. BACOA which matures in 120 days, and SAW (130 days) transmitted significantly more light to the lower canopy than COCA, which has spreading leaves and matures in 150 days. Relative yields for BACOA, SAW and COCA in pure stands were 72, 100 and 85%, respectively, while those for cocoyams in BACOA/cocoyam, SAW/cocoyam and COCA/cocoyam mixtures were 82, 58 and 54%, respectively, showing that COCA significantly suppressed the yield of cocoyam when intercropped.

Yields of a COCA type with erect leaves increased as plant density increased from 20 000 to 50 000 plants ha−1 in pure stands, while yields of COCA with spreading leaves increased as plant density increased from 20 000 to 40 000 plants ha−1 but decreased when plant population increased to 50 000 plants ha−1. When COCA with erect leaves was intercropped with cocoyams, cocoyam tuber yields were fairly stable and maize yields continued to increase significantly as plant density increased from 20 000 to 50 000 plants ha−1, whereas the yields of COCA with spreading leaves and cocoyams were greatly reduced when intercropped and when the plant population increased from 20 000 to 50 000 plants ha−1.

Type
Research Article
Information
Experimental Agriculture , Volume 21 , Issue 2 , April 1985 , pp. 145 - 152
Copyright
Copyright © Cambridge University Press 1985

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References

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