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Weather Factors Affecting the Response of Maize to Planting Dates in a Tropical Rainforest Location

Published online by Cambridge University Press:  03 October 2008

M. A. B. Fakorede  and
B. O. Opeke
M. A. B. Fakorede
Affiliation:
Department of Plant Science, University of Ife, Ile-Ife, Nigeria
B. O. Opeke
Affiliation:
Department of Plant Science, University of Ife, Ile-Ife, Nigeria
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Summary

Simple linear correlations, stepwise multiple regressions and path-coefficient analyses were used to determine the relation between grain yield of maize (Zea mays L.) and weather factors in a three year study involving several planting dates within each year. Maximum and minimum relative humidity, which demonstrated negative relationships with yield, were the most reliable factors, both directly and indirectly, for predicting yield. Temperature (including accumulated heat units), sunshine hours and total and effective rainfall generally showed negligible direct effects on yield. Potential evaporation, which showed positive correlation, had a negative direct influence on grain yield. We conclude that, whenever possible, path analysis should be used as well as correlation and regression analyses in explaining the complex multiple interactions of yield and weather factors in crop production.

Type
Research Article
Information
Experimental Agriculture , Volume 21 , Issue 1 , January 1985 , pp. 31 - 40
Copyright
Copyright © Cambridge University Press 1985

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