I have two data sets of field trials of experimental maize inbreds and hybrids. One trial used a completely randomized design where all the reps for all the treatments were randomized within the nursery. However, for the second field trial the reps were simply planted in numerical order by treatment, ie. no randomization. I want to do statistical analyses to test if there is any significant effect of my experimental treatments. I have used GLM using the mixed model approach and know that that is valid for the first trial where the reps were randomized. But what about the second trial where there was no randomization?  ... View more