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Designs for controlling interplot competition in variety trials

Published online by Cambridge University Press:  27 March 2009

O. David ,
R. A. Kempton  and
I. M. Nevison
O. David
Affiliation:
Laboratoire de Biométrie, INRA, Route de Saint-Cyr, 78026 Versailles Cedex and Laboratoire de Statistique et Probabilités, Université Paul Sabatier, 31062 Toulouse Cedex, France
R. A. Kempton
Affiliation:
Biotnathematics and Statistics Scotland, The King's Buildings, Edinburgh EH9 3JZ, UK
I. M. Nevison
Affiliation:
Biotnathematics and Statistics Scotland, The King's Buildings, Edinburgh EH9 3JZ, UK
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Summary

Interplot competition in crop variety trials leads to biased estimates of variety differences. Modified alpha designs are proposed which aim to control competition by restricting the randomization so that adjacent varieties show similar competition effects. The designs are available in the computer program Alpha +.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 127 , Issue 3 , November 1996 , pp. 285 - 288
Copyright
Copyright © Cambridge University Press 1996

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References

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