Optimal moment to change pressure regulator and sprayer kit on center pivot irrigation machines: a theoretical proposal

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dc.contributor.authorLeira, Ramón Pérez
dc.contributor.authorRomán, Rodrigo Máximo Sánchez [UNESP]
dc.contributor.authorFrizzone, José Antônio [UNESP]
dc.contributor.institutionInstituto Superior Politécnico 'Jose Antonio Echeverria' (ISPJAE)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:26:16Z
dc.date.available2014-05-27T11:26:16Z
dc.date.issued2011-12-01
dc.description.abstractA theoretical model was developed in order to determine the optimal moment for substituting the sprayer and pressure regulator kit on a center pivot irrigation machine. The model is based on the hypothesis that pressure regulator and sprayer deterioration decrease irrigation uniformity. To compensate the deficit that happens at under irrigated areas, an increase on irrigation depth is required. The model considers: additional water consumption and energy costs, maintenance and labor costs, as well as yield losses associated with under or over irrigated areas. The sum of all these components is compared to buying and installing a new spray kit cost, allowing the farmer to decide the best moment to renovate the sprayer and pressure regulator kits on a center pivot irrigation machine based on economic criteria.en
dc.description.affiliationHydraulic Investigations Center Instituto Superior Politécnico 'Jose Antonio Echeverria' (ISPJAE)
dc.description.affiliationUniversidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas (FCA), Departamento de Engenharia Rural, Botucatu, SP, Brasil
dc.description.affiliationUniversidade de São Paulo (USP), Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ), Piracicaba, SP, Brasil
dc.description.affiliationUnespUniversidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas (FCA), Departamento de Engenharia Rural, Botucatu, SP, Brasil
dc.format.extent436-449
dc.identifierhttp://irriga.fca.unesp.br/index.php/irriga/article/view/314
dc.identifier.citationIrriga, v. 16, n. 4, p. 436-449, 2011.
dc.identifier.file2-s2.0-84856280914.pdf
dc.identifier.issn1413-7895
dc.identifier.issn1808-3765
dc.identifier.lattes4285698503708751
dc.identifier.orcid0000-0002-5957-061X
dc.identifier.scopus2-s2.0-84856280914
dc.identifier.urihttp://hdl.handle.net/11449/72941
dc.language.isoeng
dc.relation.ispartofIrriga
dc.relation.ispartofsjr0,283
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCosts
dc.subjectEfficiency
dc.subjectIrrigation
dc.subjectMathematical model
dc.subjectPivot
dc.titleOptimal moment to change pressure regulator and sprayer kit on center pivot irrigation machines: a theoretical proposalen
dc.typeArtigo
dcterms.licensehttp://irriga.fca.unesp.br/index.php/irriga/about
unesp.author.lattes4285698503708751[2]
unesp.author.orcid0000-0002-5957-061X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt

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Artigos - Engenharia Rural - FCA