TARGET_SARKARI_NAUKARI Telegram 2
Physical_Classification_of_Soil_water

1. Hygroscopic water.
2. Capillary water.
3. Gravitational water.

Hygroscopic_water

▪️ It held mostly by soil colloids.

▪️ Such water is held at hygroscopic coefficient.

▪️Tension varies from 31-10,000 Atm

▪️Mostly non liquid therefore biologically inactive.

▪️Moves mostly in vapour form.

Capillary_water

▪️Such water is present in capillaries of soil.

▪️ Mostly available form of water to crops.

▪️ Capillary water functions as soil solution.

▪️Concept of capillary potential is given by Buckinghum (1907).

▪️Capillary water held between field capacity (1/3 Atm ) and wilting Coefficient is (15atm) is called available water I.e. capillary water.

Gravitational_water

▪️ It held by a negative tension of less than 0.3 ATM

▪️Free water which drains out also called drainage water.

▪️Usually present in macro pores.

▪️Undesirable and nutrient leaching takes place.

▪️ Downward movement of water due to gravitational force.



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Physical_Classification_of_Soil_water

1. Hygroscopic water.
2. Capillary water.
3. Gravitational water.

Hygroscopic_water

▪️ It held mostly by soil colloids.

▪️ Such water is held at hygroscopic coefficient.

▪️Tension varies from 31-10,000 Atm

▪️Mostly non liquid therefore biologically inactive.

▪️Moves mostly in vapour form.

Capillary_water

▪️Such water is present in capillaries of soil.

▪️ Mostly available form of water to crops.

▪️ Capillary water functions as soil solution.

▪️Concept of capillary potential is given by Buckinghum (1907).

▪️Capillary water held between field capacity (1/3 Atm ) and wilting Coefficient is (15atm) is called available water I.e. capillary water.

Gravitational_water

▪️ It held by a negative tension of less than 0.3 ATM

▪️Free water which drains out also called drainage water.

▪️Usually present in macro pores.

▪️Undesirable and nutrient leaching takes place.

▪️ Downward movement of water due to gravitational force.

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