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2. Water potential - Wikipedia

   en.wikipedia.org/wiki/Water_potential

   Water potential is the potential energy of water per unit volume relative to pure water in reference conditions. Water potential quantifies the tendency of water to move from one area to another due to osmosis , gravity , mechanical pressure and matrix effects such as capillary action (which is caused by surface tension ).

3. Scholander pressure bomb - Wikipedia

   en.wikipedia.org/wiki/Scholander_pressure_bomb

   Midday leaf water potential is less commonly used as it is more variable and does not correlate well with other physiological measurements of water status. However, midday water potentials can be used to determine times of peak water stress or diurnal changes in plant water status. [5] Additional variables and methods that involve pressure ...

4. Soil-plant-atmosphere continuum - Wikipedia

   en.wikipedia.org/wiki/Soil-plant-atmosphere...

   This shows the net movement of water down its potential energy gradient, from highest water potential in the soil to lowest water potential in the air. [1] The soil-plant-atmosphere continuum (SPAC) is the pathway for water moving from soil through plants to the atmosphere. Continuum in the description highlights the continuous nature of water ...

5. Turgor pressure - Wikipedia

   en.wikipedia.org/wiki/Turgor_pressure

   Turgor pressure can be deduced when the total water potential, Ψ w, and the osmotic potential, Ψ s, are known in a water potential equation. [30] These equations are used to measure the total water potential of a plant by using variables such as matric potential, osmotic potential, pressure potential, gravitational effects and turgor pressure ...

6. Pressure-volume curves - Wikipedia

   en.wikipedia.org/wiki/Pressure-volume_curves

   In ecology, pressure-volume curves describe the relationship between total water potential (Ψt) and relative water content (R) of living organisms.These values are widely used in research on plant-water relations, and provide valuable information on the turgor, osmotic and elastic properties of plant tissues.

7. Tensiometer (soil science) - Wikipedia

   en.wikipedia.org/wiki/Tensiometer_(soil_science)

   A tensiometer in soil science is a measuring instrument used to determine the matric water potential (soil moisture tension) in the vadose zone. This device typically consists of a glass or plastic tube with a porous ceramic cup and is filled with water .

8. Soil moisture - Wikipedia

   en.wikipedia.org/wiki/Soil_moisture

   The potential energy of water per unit volume relative to pure water in reference conditions is called water potential. Total water potential is a sum of matric potential which results from capillary action, osmotic potential for saline soil, and gravitational potential when dealing with downward water movement. Water potential in soil usually ...

9. Water retention curve - Wikipedia

   en.wikipedia.org/wiki/Water_retention_curve

   Water retention curve is the relationship between the water content, θ, and the soil water potential, ψ. The soil moisture curve is characteristic for different types of soil, and is also called the soil moisture characteristic. It is used to predict the soil water storage, water supply to the plants (field capacity) and soil aggregate stability.