Soil Water: Retention and Potentials

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True/False on soil moisture fundamentals

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Raj Agrico

India

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Soil Water: Retention and PotentialsVersion en ligne True/False on soil moisture fundamentals par Raj Agrico 1 Available water is the water held between -15 bars and -1/3 bars of matric potential. Yes No 2 Tensiometers measure the matric potential of soil moisture up to about -0.8 bars. Yes No 3 Soil moisture retention curves are also called soil moisture characteristic curves. Yes No 4 Aeration porosity is the portion of pore space with diameter less than 0.06 mm. Yes No 5 pF is the logarithm base 10 of the negative soil moisture pressure expressed in centimeters. Yes No 6 Hygroscopic coefficient refers to water that is adsorbed from the atmosphere and is not available to plants. Yes No 7 Gravitational potential is always negative with respect to the reference level. Yes No 8 Pressure membrane apparatus can measure tensions up to 1000 bars. Yes No 9 Field capacity corresponds to a pF value of 3.0. Yes No 10 The wilting coefficient corresponds to a pF value of 2.0. Yes No

Soil Water: Retention and PotentialsVersion en ligne

True/False on soil moisture fundamentals

par Raj Agrico

Available water is the water held between -15 bars and -1/3 bars of matric potential.

Yes

Tensiometers measure the matric potential of soil moisture up to about -0.8 bars.

Yes

Soil moisture retention curves are also called soil moisture characteristic curves.

Yes

Aeration porosity is the portion of pore space with diameter less than 0.06 mm.

Yes

pF is the logarithm base 10 of the negative soil moisture pressure expressed in centimeters.

Yes

Hygroscopic coefficient refers to water that is adsorbed from the atmosphere and is not available to plants.

Yes

Gravitational potential is always negative with respect to the reference level.

Yes

Pressure membrane apparatus can measure tensions up to 1000 bars.

Yes

Field capacity corresponds to a pF value of 3.0.

Yes

The wilting coefficient corresponds to a pF value of 2.0.

Yes

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Soil Water: Retention and Potentials

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Soil Water: Retention and PotentialsVersion en ligne

par Raj Agrico

Available water is the water held between -15 bars and -1/3 bars of matric potential.

Tensiometers measure the matric potential of soil moisture up to about -0.8 bars.

Soil moisture retention curves are also called soil moisture characteristic curves.

Aeration porosity is the portion of pore space with diameter less than 0.06 mm.

pF is the logarithm base 10 of the negative soil moisture pressure expressed in centimeters.

Hygroscopic coefficient refers to water that is adsorbed from the atmosphere and is not available to plants.

Gravitational potential is always negative with respect to the reference level.

Pressure membrane apparatus can measure tensions up to 1000 bars.

Field capacity corresponds to a pF value of 3.0.

The wilting coefficient corresponds to a pF value of 2.0.

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