Different Types of Water in Soil MCQ - Practice Questions with Answers

1. Holard: The total amount of water present in the soil.
2. Echard: The soil water not available to the plants.
3. Chesard: The soil water available to the plants.

• The amount of water that a soil can hold depends on the total pore space in the soil.
• The soil water occurs in the following forms:
  • Gravitational Water: The rainwater that seeps into the soil to contribute to the water table under the influence of gravity. It is beyond the reach of the plants.
  • Capillary Water: A large proportion of water which is retained between the soil particles against gravity. This water is available to the plants.
  • Hygroscopic Water: Water held by the soil particles in the form of thin-film due to the adhesive property of soil particles.
• Root hair cells absorb capillary water.
• The amount of all forms of water present in the unit weight of soil under controlled condition is called Field Capacity.
• The amount of capillary water present in the unit weight of soil under controlled condition is called Storage Capacity.
• The amount of water present in the soil when permanent wilting is attained by the plant is called permanent wilting percentage.