Lecture04 - The concept of water potential has two...

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The concept of water potential has two principal uses 1. Ψ w governs transport across cell membranes 2. Ψ w is often used as a measure of the water status of a plant Plants with reduced Ψ W undergo water stress. This results in reduced cell growth, reductions in photosynthesis.
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The field capacity is the amount of water the soil is able to retain against gravitational forces. The permanent wilting point is the soil water potential value at which plants cannot regain turgor pressure even at night, in the absence of transpiration. Soil hydraulic conductivity (K) as a function of the water potential of the soil. The decrease in conductivity as the soil dries is due primarily to the movement of air into the soil
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Lecture04 - The concept of water potential has two...

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