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Fig. 1. Herbage yields of pastures planted to four different mixtures of forages and grazed during 2002 and 2003 at University Park, PA. Species sown were two species (orchardgrass–white clover), three species (orchardgrass, white clover, and chicory), six species (orchardgrass, tall fescue, perennial ryegrass, red clover, birdsfoot trefoil, and chicory), and nine species (the six-species mixture plus white clover, alfalfa, and Kentucky bluegrass). Data are totals for the grazing seasons averaged for two replicate pastures. In 2002, herbage yield was lower (P < 0.05) on the two-species mixture compared with the three-, six-, and nine-species mixtures. Herbage yield did not differ (P > 0.05) among the three-, six-, or nine-species mixtures. In 2003, the mixtures did not differ (P > 0.05) in herbage yield.
