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greenhouse was 12% that of KBG. In both the field (clay) and greenhouse (sand), at each soil depth examined (0-20, 20-40, and 40-60 cm) HBG exhibited significantly greater root length density (RLD), total root length (TRL), and total root mass (TRM) than KBG. In the field HBG exhibited greater drought avoidance, maintaining turf quality longer during prolonged dry-down than KBG. These factors combined contribute significantly to the reduced water use and greater drought avoidance observed in HBG relative to KBG.
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