Question

If a field needs 5 inches per week during peak season for crop ETc; the field size is 61 acres; and the IE = 75%. How much water should be applied by the irrigation system each week?

Answer 1

To calculate how much water should be applied by the irrigation system each week, multiply the field size by the crop ETc (evapo-transpiration) and the irrigation efficiency (IE).

Step-by-step explanation:

To calculate how much water should be applied by the irrigation system each week, we can use the formula:

Water application = Field size x Crop ETc x IE

Given:

• Field size = 61 acres
• Crop ETc = 5 inches per week
• IE = 75%

Substituting these values into the formula, we have:

Water application = 61 acres x 5 inches per week x 75%

Water application = 183.75 inches per week

Therefore, the irrigation system should apply 183.75 inches of water each week.