PROC GLM and PROC MIXED Codes for Trend Analyses for Row-Column-Designed Experiments

The program outlined in this chapter may be used for a variety of response models in row-column experiments. The example used to illustrate the steps in this program is a randomized complete block design (RCBD) that was laid out as an eight-row by seven-column field experiment. The experiment with data is described in Federer and Schlottfeldt (1954). The data include twenty plant heights in centimeters for seven different treatments. Since the experiment was planted as an eight-row by seven-column arrangement, an RCBD analysis may not be appropriate. The SAS code is written to compare five different response models that account for the spatial variation present. Variation orientation was different than the row-column layout.