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Population × Environment Interactions in Maize Trials and their Implications on Testing Procedures

Published online by Cambridge University Press:  03 October 2008

A. Tunde Obilana  and
Tunde Fatunla
A. Tunde Obilana
Affiliation:
Federal Department of Agricultural Research, PMB 5042, Ibadan, Nigeria
Tunde Fatunla
Affiliation:
Department of Plant Science, University of Ife, Ile-Ife, Nigeria
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Summary

The important interactions in a 2-year maize trial were population × location, location × year and population × year × location, and our analyses suggest that eight locations, two years and three replications will allow the detection of a 5% differential in yield. The most effective way of obtaining the true value of a variety is by increasing the number of years, and the least effective is by increasing the number of replications. Since locations can be effectively substituted for years, increasing the number of locations will expedite the release of improved cultivars.

Type
Research Article
Information
Experimental Agriculture , Volume 12 , Issue 4 , October 1976 , pp. 379 - 383
Copyright
Copyright © Cambridge University Press 1976

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References

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