If soil is heated in an oven at approximately 105o C, hygroscopic water can be evaporated. The water that remains in the soil is in hydrates of aluminums, iron and silicon, etc and is known as
Capillary water
Gravitational water
Run away water
Chemically combined water
Chemically combined water -
Water which combines with inorganic salts of soil in the form of water of hydration.
- wherein
This water is not available to plants