Fig. 2. Seeded-species occurrence in September of the seeding year (open circles) or May of the postseeding year (closed circles) following frost seeding with six temperate pasture species. Means are over four replicates at each of seven sites. Presence of * or ** indicates significance of linear regressions of seeded-species occurrence on the logarithm of seeding rate, or significance of the difference between log-linear regression coefficients for September (ß_Sep) vs. May (ß_May) at P = 0.05 or 0.01, respectively