Question

A a sloping furrow irrigation system is designed to apply 3.9 inches with a DU = 0.74. ETc = 0.21 in/day. PI losses and runoff are both zero. If irrigation occurs 2 days BEFORE the perfect timing day, what is the AE (%)?

Answer 1

The Application Efficiency (AE) can be calculated by multiplying the Distribution Uniformity (DU) by the Crop Evapotranspiration (ETc), and dividing by the amount of water applied. In this case, the AE is approximately 1.51%.

Step-by-step explanation:

The AE (%), or Application Efficiency, represents the percentage of water applied through irrigation that is effectively used by the plants. To calculate the AE, we need to multiply the DU (Distribution Uniformity) by the ETc (Crop Evapotranspiration), and then divide by the amount of water applied. In this case, the DU is 0.74 and the ETc is 0.21 in/day. The amount of water applied is 3.9 inches. So, the AE can be calculated as:

AE = (DU * ETc) / Amount of water applied

AE = (0.74 * 0.21 in/day) / 3.9 inches

Simplifying the calculation gives us:

AE = 0.01515

Therefore, the AE is approximately 1.51%.