Question

Change in profile water content is given by:
a) R+I+A±P–T+E
b) R+I+A±P–T-E
c) R+I-A±P+T+E
d) R+I-A±P+T-E
e) R+I-A±P–T-E
f) All of the abo

Answer 1

The correct formula for the change in profile water content is commonly expressed as:

\[ \Delta W = R + I + A \pm P - T - E \]

Where:
- \( \Delta W \) = change in water content
- \( R \) = rainfall (or precipitation)
- \( I \) = irrigation
- \( A \) = any inflow (e.g., inflow from other sources)
- \( P \) = percolation or deep drainage (outflow)
- \( T \) = transpiration
- \( E \) = evaporation

From the options you've provided, the correct representation that adheres to this interpretation is:

**b) R + I + A ± P – T - E**

If you need any more assistance or clarification, feel free to ask!