The Arable Group (TAG) set up a field trial with different rotations of oilseed rape with wheat. I joined the project in year five and have been taking samples from two treatments. Continuous oilseed rape (OOOOO) and oilseed rape grown alternately with wheat (OWOWO). The aim was to investigate whether the pathogen populations from these two treatments differed.
Plant samples were taken from the guard rows of each plot (the centre being left for yield data).