SciELO - Scientific Electronic Library Online

 
vol.16 issue8Growth and nutritional status of helicônia irrigated with treated wastewater in greenhouse author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Brasileira de Engenharia Agrícola e Ambiental

Print version ISSN 1415-4366

Abstract

SOUZA, Wanderley de J.; BOTREL, Tarlei A.; COELHO, Rubens D.  and  NOVA, Nilson A. V.. Subsurface drip irrigation: conventional dripper and new prototype. Rev. bras. eng. agríc. ambient. [online]. 2012, vol.16, n.8, pp. 811-819. ISSN 1415-4366.  http://dx.doi.org/10.1590/S1415-43662012000800001.

Subsurface drip irrigation that uses an emitter protection system to avoid its clogging by roots and soil particles may be viable compared to a conventional system. The objective of this work was to evaluate the performance of a system with emitter protection, and to compare the results with a system that uses a conventional emitter for subsurface drip irrigation. In the system with protection an inexpensive materials polyethylene hose, microtube, connector, and a dripper to control the flow rate were used; and, in the conventional system a commercial emitter was used. After 12 months of evaluation, the system with protector showed good performance, with relative average flow rate of 0.97 and 0.98 in pots with and without crop, respectively, showing no clogging problems and lower cost. In conventional system relative flow rate of 0.51 and 0.98 were observed in pots with and without crop, respectively, also clogging degree by roots of 49.22%, and emitters with soil inside was observed. Thus, the use of emitter with protection presented feasibility for subsurface drip irrigation, under conditions used in this research.

Keywords : root intrusion; clogging; suction of solid particles.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese