What question did this study set out to answer?

To introduce a neighbour-type statistical model for analyzing agricultural field variety trials as an alternative to existing spatial models.

January 1, 1986Biometrika

A neighbour model for field experiments

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Methodological study demonstrates efficiency gains in cereal variety trials, suggesting an effective alternative to incomplete block analysis.

To introduce a neighbour-type statistical model for analyzing agricultural field variety trials as an alternative to existing spatial models.
Assumed varieties are organized into complete replicates with side-by-side plots.
Developed a variance parameter estimation method extending standard incomplete block design techniques.
Evaluated model performance using dataset records from 166 cereal variety trials.
Demonstrated worthwhile gains in statistical efficiency compared to conventional incomplete block analysis.
Successfully modeled spatial dependence between adjacent field plots within complete replicates.

Earle Williams (1986) studied this question.

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Methodological study demonstrates efficiency gains in cereal variety trials, suggesting an effective alternative to incomplete block analysis.