Discussion of “An Alternative Analytical Approach to Designing Paired Lateral Lines for Microirrigation on Slopes”

The discussers would like to express sincere appreciation to the authors of the original paper, for conducting valuable research on paired drip laterals on slopes, with particular emphasis in identifying the best design solution.As part of their design procedure, the authors adopted the assumption-originally proposed by Keller and Bliesner (1990)-that the pressure head at the distal end of the downhill lateral (h d ) is equal to that at the uphill end (h u ).This assumption is referred to as Case A (Fig. 1).The objective of this discussion is twofold.First, it aims to present an alternative dimensionless approach in which all key design parameters (uphill and downhill emitters, N u and N d , their sum, N, slope, S 0 , emitter spacing, S, inside lateral diameter, D,