Design and performance evaluation of a new subsurface emitter [electronic resource].

Includes references.

Laboratory experiments were carried out during 2011 at the Irrigation Laboratory of Agricultural Engineering Research Institute ENRL ARC. Dokki. Giza. The aim of this study was to design and evaluation a new subsurface emitter which can be used as either a normal emitter or a bubbler. This can be achieved by two steps; first: the laterals were placed directly on the soil surface and a second: has make two exit holes in the emitter body to decrease the clogging and increase the discharge rate. The new tested emitter was evaluated by comparing its performance with both of the JR sub-surface emitter and drip bubbler made in Jordan. The results showed that, in case of emitter. the new emitter discharge was 4.26 l/h. the coefficient of variation was 1.78%. while the subsurface emitter JR discharge was 4.20, the coefficient of variation was 1.90% at 100 kPa. In case of bubbler the discharge for the new sub-surface bubbler was 99.91/h. the coefficient of variation was 1.1%. While the discharge of the surface drip bubbler was 100 1/h and the coefficient of variation was 5.1% at 100 kPa

Summary in Arabic.

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