Figure S2. Effect of Weed Suppression Management Practices on Total Weed Biomass in a Tomato Cropping System. A significant difference was found in the means of total weed biomass across the three weed suppression treatments (control, clover cover crop, and black plastic mulch) for the overall tomato experiment. The pair wise comparison of the means of total weed biomass across the three weed suppression strategies found that the clover cover crop treatment and the black plastic treatment had significantly less total weed biomass compared to the control while no significant differences were seen between the clover cover crop treatment and the black plastic.