Key Concept: Emission uniformity is about how evenly emitters discharge water, not what happens to water after release.
Why it's correct: Pump pressure fluctuations directly change flow rate at every emitter across the system, causing inconsistent discharge — the main driver of poor emission uniformity.
Why others fail: Soil texture, root depth, and ambient temperature influence water movement or uptake in the soil AFTER release, not the emitter's own discharge consistency.