Water Potential Calculator
Calculate the total water potential of plant cell zones using solute and pressure equations.
Input Parameters
Enter details for calculation.
Water Potential (Ψ)
Expert Tip
Water potential flows from higher (less negative) values to lower (more negative) values. Soil usually has values close to 0, while dry air is highly negative.
Calculation Methodology & Details
Formula
C is molar concentration, i is ionization, R is pressure constant (0.0831 liter bars / mole K), and T is absolute temperature (celsius + 273.15). 1 bar = 0.1 MPa.
Important Disclaimer
The calculations provided are for educational and general planning guidelines only. They do not replace professional agronomic advice or certified agricultural testing.
How to Compute Water Potential
Follow these steps to calculate osmotic plant parameters:
Determine Molarity
Measure the solute concentration of the plant fluid.
Identify Ionization
Select 1.0 for non-ionizing sucrose or 2.0 for salts like NaCl.
Measure Turgor Pressure
Measure the physical pressure potential inside the plant cells.