I don't know enough about lattice design to tell you about that. In terms of analysing the data, I would put the data all into one table (easiest might be to use excel to input the data and then bring that in in a proc import). You'd probably have the following columns: Location, Genotype, Replicate, whatever parameters/performance you've measured Then when it comes to analysis you can group by location and/or genotype in your analysis in different ways in order to analyse interaction effect etc
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