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Fig. 2. Seasonal changes in turf quality for two creeping bentgrass cultivars at two mowing heights in 1999 and 2000. Vertical bars on the top indicate LSDs (P = 0.05) for comparisons between treatments at a given date of the year. LH = L-93 + high mowing height; LL = L-93 + low mowing height; PH = Penncross + high mowing height; PL = Penncross + low mowing height. The LSD values for the seasonal comparison for LH, LL, PH, and PL were 0.53, 0.86, 0.65, and 0.43, respectively, for 1999, and 0.85, 1.15, 0.63, and 0.65, respectively, for 2000.