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What parameter directly affects the depth of water applied during irrigation in surface irrigation systems?

13. What parameter directly affects the depth of water applied during irrigation in surface irrigation systems?

1. Pump discharge rate
2. Sprinkler nozzle size
3. Irrigation canal capacity
4. Length and slope of the field

Answer

The correct answer is: D) Length and slope of the field

Explanation

The length and slope of the field determine the time it takes for water to travel across the field, influencing the depth of water applied.