Frictional Potential Losses and Total Water Potential in Plants: a Re-evaluation

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Abstract
A theoretical treatment is given of isothermal potential losses due to frictional resistances against water flow in plants. It becomes apparent that in the past two main difficulties have been widely ignored: the proper choice of dimensions for fluxes and resistances deserves consideration, and the original van den Honert concept seems to be especially prone to misinterpretation. A revised equation is presented for total water potential at a certain point in the plant, and some implications of this approach are outlined.

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