Emitter spacing is best described as what?

• A. The total flow rate per zone
• B. The distance between emitters along a line
• C. The diameter of tubing
• D. The time between irrigation cycles

Answer: (B)

Emitter spacing describes the distance between emitters along a line. It’s a design detail that determines how water is distributed across the wetted area during an irrigation event. When emitters are placed closer together, their wetting zones overlap, improving uniformity and helping prevent dry spots, especially in soils with slow infiltration or uneven coverage. If emitters are spaced farther apart, the wetting patterns are larger and coverage can become uneven unless you compensate with longer run times or higher pressure. The other options refer to total flow to the zone, tubing diameter, or irrigation timing, not how emitters are physically arranged along the line.