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Fig. 1. Winter herbage mass of endophyte-infected Kentucky 31 (KY31 E+), HiMag infected with a nontoxic endophyte (HiMag NTE), and endophyte-free HiMag (HiMag E-) tall fescue. Data are pooled across four winter sampling dates and 2 yr. Bars with the same letter are not significantly different using Fisher's protected LSD ({alpha} = 0.05).