Click on image to view larger version.
Fig. 1. Distributions of the efficiency of (A) the nearest neighbor adjustment (NNA), (B) least squares smoothing (LSS), and (C) first-order autoregressive model analyses (AR1) in removing spatial trends from the residual variances in 157 field pea variety trials tested in Alberta, Canada, during 1997 to 2001. SSENNA, SSELSS, and SSERCBD are the error sums of squares from the NNA, LSS, and randomized complete block design analyses. SEDAR1 and SEDRCBD are the standard errors of difference from the AR1 and RCBD analyses.
