Question

The ratio of water stored in root zone during irrigation to water delivered to the plot is called:

• A. Water delivered to the irrigated plot Water delivered from source
• B. Water stored in root zone during the irrigation Water delivered to the plot
• C. Water stored in root zone during irrigation Water needed in root zone prior to irrigation
• D. Average numerical deviation in depth of water stored from the average depth stored during irrigation Average depth of water stored during irrigation

Hint:

Storage efficiency = Water stored Water applied.
Application efficiency = Water stored Water delivered.
Conveyance efficiency = Water delivered Water supplied.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Various efficiencies are used in irrigation water management.
We need to identify the ratio for water storage efficiency.

Step 2: Key Formula or Approach:
Water storage efficiency = Water stored in root zone Water delivered to the plot.

Step 3: Detailed Explanation:
The water stored in the root zone during irrigation divided by the water delivered to the plot gives the storage efficiency.
This indicates how much of the applied water is actually stored in the root zone.
Other options represent different ratios.
Thus, the correct ratio is water stored in root zone water delivered to the plot.

Step 4: Final Answer:
The ratio is water stored in root zone during irrigation water delivered to the plot.
Hence, the correct option is (B).