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DIMSUB, a computer program for designing microirrigation subunits. Tool definition and case studies Scientia Agricola
Palau,Carmen Virginia; Arviza,Jaime; Balbastre,Iban; Manzano,Juan.
ABSTRACT: DIMSUB is a computer program to complement a decision support tool (DST) to effectively study different hydraulic design alternatives in microirrigation systems. We developed environments in Visual Basic for applications for Microsoft Excel® that allow specific step-by-step functions to be created for the design of irrigation subunits. Different alternatives can be considered, such as types of emitter, lateral and submain pipe sizes, different feeding points, irregular subunit shapes and topography slopes. Furthermore, specific uniformity criteria need to be considered to achieve efficient water applications and proper design systems. Lengths of run lateral and submain pipes, position of the hydrant connection, pressure head and head loss in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigation; Emission uniformity; Dripper; Manifold.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000300100
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Performance of non woven synthetic fabric and disc filters for fertirrigation water treatment Scientia Agricola
Ribeiro,Túlio Assunção Pires; Paterniani,José Euclides Stipp; Airoldi,Rogério Pereira da Silva; Silva,Marcelo Jacomini Moreira da.
Obstruction of emitters caused by the presence of solid particles in the water raises the cost and maintenance of trickle irrigation systems, and might compromise their utilization. This research was performed through test fields, with the objective of evaluating the performance of a disc filter (130 microns) and a non woven synthetic fabric filter on the removal of physical, chemical and biological impurities from the irrigation water, which may cause emitter obstruction during fertirrigation processes. The evaluation criteria of the impurities present in the irrigation water, were based on studies performed on trickle irrigation systems. Specifically, physical, chemical and biological parameters analyzed in the inflow and outflow water from both filters...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dripper; Filtration; Water quality; Irrigation.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000200001
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