Influence of pre-dawn water potential and soil-to-leaf hydraulic conductance on maximum daily leaf diffusive conductance in two oak species

Changes in pre-dawn water potential, soil-to-leaf hydraulic conductance and leaf diffusive conductance were well correlated in oak trees during natural drying cycles in the field. Maximum daily leaf conductance was highly correlated with pre-dawn water potential for blackjack oak and northern red oak while leaf water potential at the time of measurement of leaf conductance was not significantly correlated with leaf conductance

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