why matric potential always has a negative value
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The matrix potential is always negative because the water attracted by the soil matrix has an energy state lower than that of pure water
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Explanation:
Matric potential (Ψm) is the amount of water bound to the matrix of a plant via hydrogen bonds and is always negative to zero. ... The binding of water to a matrix always removes or consumes potential energy from the system. Ψm is similar to solute potential because the hydrogen bonds remove energy from the total system.
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