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Efficiency of neighbour analysis for replicated variety trials in Australia

Published online by Cambridge University Press:  27 March 2009

B. R. Cullis  and
A. C. Gleeson
B. R. Cullis
Affiliation:
NSW Agriculture and Fisheries Research Institute, Wagga Wagga, NSW 2650, Australia
A. C. Gleeson
Affiliation:
NSW Agriculture and Fisheries Research Centre, Tamworth, NSW 2340, Australia
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Summary

Use of a one-dimensional neighbour method of analysis in 1019 variety trials of a range of crops conducted by plant breeders in four states of Australia in 1985–87 resulted in an average reduction of 42% in variances of varietal yield differences compared with conventional randomized complete block analysis. Of these trials, 219 were designed as square, rectangular or generalized lattices and the average reduction in variances of varietal yields with incomplete block analysis and recovery of interblock information was 33%. The results emphasized that plots should be wide enough to avoid interplot competition, and that neighbour analysis is of most benefit in trials with short plots or when the field layout has many plots in a row.

Type
Review
Information
The Journal of Agricultural Science , Volume 113 , Issue 2 , October 1989 , pp. 233 - 239
Copyright
Copyright © Cambridge University Press 1989

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References

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