<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2071-0054</journal-id>
<journal-title><![CDATA[Revista Ciencias Técnicas Agropecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cie Téc Agr]]></abbrev-journal-title>
<issn>2071-0054</issn>
<publisher>
<publisher-name><![CDATA[Universidad Agraria de La Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2071-00542024000300003</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Diagnosis and evaluation of pressurized irrigation systems in Portoviejo City, Manabí, Ecuador]]></article-title>
<article-title xml:lang="es"><![CDATA[Diagnóstico y evaluación de sistemas de riego presurizados del cantón Portoviejo en Manabí, Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Olivo]]></surname>
<given-names><![CDATA[Mario Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Leira]]></surname>
<given-names><![CDATA[Ramón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ministerio de ambiente, agua y transición ecológica Fomento a la Gestión de Agua Potable, Saneamiento, Riego y Drenaje ]]></institution>
<addr-line><![CDATA[Portoviejo Manabí]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Laica Eloy Alfaro de Manabí Facultad de Ingeniería, Industria y Arquitectura ]]></institution>
<addr-line><![CDATA[Manta Manabí]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<volume>33</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2071-00542024000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2071-00542024000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2071-00542024000300003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT During 2022, an investigation was conducted on 16 farms to evaluate management of pressurized irrigation systems in Portoviejo City. Factors that affected management were identified, such as; A) Presence of leaks or breaks in the irrigation system deployed on the field, B) Modifications done to the initial project constructions, C) Lack of knowledge regarding managing, operating and maintaining (AOM) irrigation system, D) Absence of a filtering system, E) Absence of a hydraulic design of the system or implementation of a hydraulic project, F) Absence of water collectors. Factor D) was the most frequent troubling issue, identified in 14 out of 16 evaluations. Quality of the system was tested based on hydraulic evaluation and calculations to determine the uniformity of the output following the established hydraulic system norms. As a result, Localized irrigation systems displayed the highest rating, with a maximum efficiency of 93.90%. Sprinkler systems had a wider range, from 29.90% to 73.10%, with an average of 52.33%, which was considered unacceptable. Factor A showed little variation in uniformity evaluations, while factor D, C and E showed greater disparity in uniformity values.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Durante 2022, se realizó una investigación en los sistemas de riego presurizados de 16 fincas del cantón Portoviejo para evaluar su gestión desde la etapa de proyección hasta la operación de los Sistemas. Los Factores limitantes más relevantes que afectaron la gestión fueron: A) Presencia de fugas o roturas en campo presentes en el sistema, B) Modificaciones constructivas al proyecto inicial, C) Desconocimiento de procedimiento de Administración, Operación y Mantenimiento (AOM) del sistema de riego, D) Ausencia de sistema de filtrado, E) Ausencia de proyecto o diseño hidráulico del sistema, F) Ausencia de obras de captación. El factor D) fue el problema más frecuente, identificado en 14 de 16 evaluaciones. La Calidad del Riego se evaluó a partir de evaluaciones hidráulicas y cálculo de los Coeficientes de Uniformidad establecidos en las Normas para estos sistemas. Se evidenció una mayor Uniformidad en los sistemas de riego localizado con un máximo del 93.90%. La Uniformidad en los sistemas de aspersión tuvo un rango amplio, de 29.90% a 73.10%, con una media de 52.33%, lo cual categoriza como inaceptable. El factor A mostró poca influencia en la Uniformidad, mientras que los factores limitantes D, C y E fueron los que mayor incidencia tuvieron en la calidad del Riego.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[hydraulic evaluation]]></kwd>
<kwd lng="en"><![CDATA[factor]]></kwd>
<kwd lng="en"><![CDATA[sprinkler irrigation]]></kwd>
<kwd lng="en"><![CDATA[localized irrigation]]></kwd>
<kwd lng="es"><![CDATA[evaluación hidráulica]]></kwd>
<kwd lng="es"><![CDATA[factor]]></kwd>
<kwd lng="es"><![CDATA[riego por aspersión]]></kwd>
<kwd lng="es"><![CDATA[riego localizado]]></kwd>
</kwd-group>
</article-meta>
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