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Carbon Isotope Discrimination in Orchardgrass and Ryegrasses at Four Irrigation Levels

USDA-ARS, Forage and Range Research Laboratory, Utah State Univ., Logan, UT 84322-6300

View larger version (12K): [in a new window]   Fig. 1. Trends in carbon isotope discrimination () across four water levels for the dryland orchardgrass cultivar Paiute and the mean of the irrigated orchardgrass cultivars across 2 yr (1997 to 1998) at the Evans Research Farm near Logan, UT. Bar = SE.

View larger version (12K): [in a new window]   Fig. 2. Trends in carbon isotope discrimination () across four water levels for diploid and tetraploid ryegrass cultivars across 2 yr (1997 to 1998) at the Evans Research Farm near Logan, UT. Bar = SE.