Enhanced diagnostics for the spatial analysis of field trials

Authors

Katia T. Stefanova, WA Department of Agriculture and Food
Alison B. Smith, NSW Department of Primary IndustriesFollow
Brian R. Cullis, University of WollongongFollow

RIS ID

40456

Publication Details

Stefanova, K. T., Smith, A. B. & Cullis, B. R. (2009). Enhanced diagnostics for the spatial analysis of field trials. Journal of Agricultural, Biological, and Environmental Statistics, 14 (4), 392-410.

Abstract

We report an analysis of a series of uniformity field trials using the technique proposed by Gilmour, Cullis, and Verbyla. In particular, we clarify the role of the sample variogram and present a range of enhanced graphical diagnostics to aid the spatial modeling process.We highlight the implications of the presence of extraneous variation related to commonly used agronomic practices, such as serpentine harvesting.