Main plots measured 9.1 x 6.1 m, with
planting date subplots 9.1 x 3.1 m and termination date subplots 9.1 x 1.5 m. Cover crop treatments included cereal rye monoculture (variety not stated), hairy vetch monoculture (variety
not stated), and 25:75 and 50:50 (by seed weight) rye-hairy vetch mixtures.