Soil water considered as available water is generally held at pressure:

Correct option is B

• Field Capacity (FC): The maximum amount of water a soil can hold against gravity, typically at -0.3 bars.

• Permanent Wilting Point (PWP): The point where plants can no longer extract water, occurring at -15 bars.

• Available Water Capacity (AWC): The water held between -0.3 bars to -15 bars.​

1. Gravitational Water (0 to -0.1 bars):

   • Found in macropores and drains quickly due to gravity.

2. Capillary Water (-0.3 to -15 bars):

   • Held in micropores and available to plants.

   • This is the only usable form of water for plants.

3. Hygroscopic Water (> -15 bars):

   • Tightly bound to soil particles.

   • Unavailable to plants, even under extreme drought.