Line Source Drip is best described as which configuration?

• A. Single point emitter near each plant
• B. A continuous line of emitter tubing arranged along the root zone.
• C. Mist-like spray near canopy
• D. Perforated underground pipe

Answer: (B)

Line source drip describes a continuous line of emitter tubing laid along the plant’s root zone. This setup delivers water in a steady, distributed fashion along the length of the bed or row, so moisture is applied evenly across the entire root zone rather than concentrated at a single point. It’s especially effective for long, narrow plantings like rows of trees, vines, or shrubs where roots extend along the length and uniform wetted soil is desired. Because water is released along the line at a controlled rate, it reduces evaporation and runoff compared to surface sprays, and it keeps delivery close to the root zone, unlike overhead misting or sprinklers. Perforated underground pipe might seep water but doesn’t provide the regulated, emitter-based distribution along the entire line that characterizes line source drip.