Question

The value of permanent wilting point in bars is approximately:

• A. -0.0
• B. -1.0
• C. -1.5
• D. -0.5

Hint:

Soil moisture constants:
- Field capacity: -0.33 bars (-0.033 MPa).
- Permanent wilting point: -15 bars (-1.5 MPa).
- Available water: FC - PWP.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
This question tests knowledge of soil moisture constants.

Step 2: Detailed Explanation:
The permanent wilting point (PWP) is the soil moisture content at which plants cannot extract water.
It is approximately -15 bars (or -1.5 MPa).
Wait, the question asks "in bars".
-15 bars is the correct value.
But the options are -0.0, -1.0, -1.5, -0.5.
The options might be in MPa?
-15 bars = -1.5 MPa.
Thus, the value in MPa is -1.5.
I'll go with -1.5.

Step 3: Final Answer:
Thus, the value of permanent wilting point is approximately -1.5 bars/MPa, which corresponds to option (C).
[0.5cm]