Journal
AUSTRALIAN & NEW ZEALAND JOURNAL OF STATISTICS
Volume 61, Issue 4, Pages 466-473Publisher
WILEY
DOI: 10.1111/anzs.12277
Keywords
average efficiency factor; experimental design; neighbour balance; randomisation; resolvable design; row-column design
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Neighbour balance and evenness of distribution designs help to address user concerns in the two-dimensional layout of agricultural field trials. This is done by minimising the occurrence of pairwise treatment plot neighbours and ensuring that the replications of treatments are spread out across rows and columns of a trial. Such considerations result in a restriction on the normal randomisation process for a row-column design which can lead to error variance bias. In this paper, uniformity trial data is used to assess the degree of this bias for both resolvable and non-resolvable designs. Comparisons are made with a similar investigation using Linear Variance spatial designs.
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