الفهرس 
introduction
laboratory experimentOnly 14 pages are availabe for public view
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Abstract
The aim of this study was to design and evaluate a new subsurface emitter which can be used as either a normal emitter and a bubbler. this can be achived by two steps;first :the literals were placed directly on the soil surface and the second:has make two exit holes in the emitter body to decrease the clogging and increase the disharge rate. the new tested emitter was evaluated by comparing its performance with both of the long bath emitter GR and drip bubbler made in jordan.