Bubbler irrigation is not usual in agricultural irrigation.

Bubblers typically apply water on a 'per plant' basis and are very similar to the point source external emitters in shape but differ in performance. Low pressure bubblers are designed for localised 'flood' irrigation of small areas.

The bubbler emitters dissipate water pressure through a variety of diaphragm materials and deflect water through small orifices. Most bubbler emitters are pressure compensating. The bubbler emission devices are equipped with single or multiple port outlets.

Water from the bubbler head either runs down on the emission device or spreads a few inches in an 'umbrella' pattern. They deliver water in bubbles or in a low stream on the same spot. The flow rate is adjusted by twisting the top and ranges from 110-250 L/hr at an operating pressure of 1-3 bar.

Most bubbler heads are used for tree (1 or 2 per tree), planter boxes and landscape applications.