Question

Arrange the following steps to estimate irrigation interval (days):
A. Compute the total number of irrigations over the growing season
B. Estimate gross irrigation depth
C. Calculate irrigation interval
D. Compute the irrigation water need over the total growing season
E. Estimate net irrigation depth
Choose the correct answer from the options given below:

• A. D, E, B, A, C
• B. E, B, D, A, C
• C. B, E, A, D, C
• D. A, D, E, B, C

Hint:

Irrigation interval = (Gross irrigation depth) (Consumptive use rate).
Or: Days between irrigations based on soil moisture depletion.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Irrigation interval is the time between two consecutive irrigations.

Step 2: Detailed Explanation:
The correct sequence for estimating irrigation interval is:
D: Compute the irrigation water need over the total growing season.
First, determine the total water requirement of the crop.
E: Estimate net irrigation depth.
Calculate the net depth of water to be applied per irrigation.
B: Estimate gross irrigation depth.
Adjust net depth for irrigation efficiency to get gross depth.
A: Compute the total number of irrigations over the growing season.
Divide total water need by gross irrigation depth.
C: Calculate irrigation interval.
Divide the total growing season days by the number of irrigations.
Thus, the correct sequence is D, E, B, A, C.

Step 3: Final Answer:
Thus, the correct order is D, E, B, A, C.
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