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A Comparison of Spatial Designs for Field Variety Trials |
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| Authors: | E R Williams H P Piepho |
| Institution: | 1. Statistical Consulting Unit, Australian National University, , Canberra, ACT, 0200 Australia;2. Bioinformatics Unit, Institute for Crop Science, University of Hohenheim, , Stuttgart, 70593 Germany |
| Abstract: | Experimental designs can be constructed to be efficient in the presence of spatial correlation. Available construction methods include those based on autoregressive and linear variance models. This paper investigates spatial designs across a range of assumed autoregressive structures. Results show that when the spatial component is low relative to the independent error term, efficient spatial designs can be constructed without having to specify parameters for the spatial structure. |
| Keywords: | autoregressive model efficiency factor experimental design linear variance model row‐column design |