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Analysis of a Uniformity Trial on Cassava

Published online by Cambridge University Press:  03 October 2008

Biyi Afonja
Biyi Afonja
Affiliation:
Federal Department of Agricultural Research, Ibadan, Nigeria
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Summary

The analysis of a uniformity trial on cassava is briefly discussed, mentioning possible effects of plant losses on the methods of analysis. Two methods of calculating comparable variances, on a per plant and per unit area basis, gave very high values for the index of heterogeneity, with a mean of 0·94. When the ratio of overall cost per plot to cost per unit area lies between one and two, an optimum plot size of between 16 and 32 plants is obtained. The comparable plot sizes would range from 192 to 385 sq. ft and give a coefficient of variation less than twenty.

Type
Research Article
Information
Experimental Agriculture , Volume 4 , Issue 2 , April 1968 , pp. 135 - 141
Copyright
Copyright © Cambridge University Press 1968

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References

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