2013 Grain Pea Demonstration Trial Results Graph 2:  Total yield of cereal/pea mixes and the percent of the harvested grain that was pea. Key = Cereal; Pea Y-axis = Yield at 13.5% moisture (lbs/acre) 0, 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500 X-axis = Percentage of pea seed in the mix; conlon barley