Fig. 3. The effects of four temperatures on interspecific interference among tall fescue, sloughgrass, and tufted hairgrass grown in two-species combinations at three mixture ratios (25:75, 50:50, and 75:25). Data are presented as dry mass per seedling for each species as a percentage of the monoculture yield (equality with the monoculture control is represented by 0%) and each temperature–density condition. Symbol keys indicate the order of the species in the two-species mixture. The TF, SG, and HG indicate tall fescue, sloughgrass, and tufted hairgrass, respectively. Bars indicate the standard error of the mean, and ns indicates the yield is not different from the monoculture seedling mass at P 0.01 according to Fisher's protected LSD test.