Micro-Irrigation Systems

In a drip irrigation lateral, minimum emitter discharge is $q_{min} = 3.6\text{ L/h}$ and average emitter discharge is $q_{avg} = 4.0\text{ L/h}$. For single emitter per plant ($e=1$) and manufacturer coefficient of variation $CV = 0.05$, the Keller-Karmeli emission uniformity is $EU = 100 \times [1 - 1.27 \times 0.05] \times \frac{3.6}{4.0} = 100 \times [1 - 0.0635] \times 0.90 = 100 \times 0.9365 \times 0.90$. The $EU$ in percentage (rounded off to one decimal place) is: