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Fig. 6. Mean pressure head at first occurrence of limiting hydraulic conditions (hmean,lim) as a function of potential transpiration rate (Tp) for low, medium, and high root density in a clay soil simulated with and without daily transpiration amplitude (for lines identified with "A", mean transpiration equals Tp and amplitude equals Tp; for lines identified with "B", mean transpiration equals Tp and amplitude is zero; for lines identified with "C", mean transpiration equals 2Tp and amplitude is zero).
