<?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>0120-0135</journal-id>
<journal-title><![CDATA[Revista de Ciencias Agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Cienc. Agr.]]></abbrev-journal-title>
<issn>0120-0135</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Nariño]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-01352020000100006</article-id>
<article-id pub-id-type="doi">10.22267/rcia.203701.124</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Water quality index using fuzzy logic Utcubamba River, Peru]]></article-title>
<article-title xml:lang="es"><![CDATA[Índice de calidad de agua empleando lógica difusa Río Utcubamba, Perú]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiñones-Huatangari]]></surname>
<given-names><![CDATA[Lenin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa T.]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Milla-Pino]]></surname>
<given-names><![CDATA[Manuel Emilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bazán C.]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gamarra T.]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rascón]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,National University of Jaen  ]]></institution>
<addr-line><![CDATA[Jaen ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,National Autonomous Universidad de Mexico  ]]></institution>
<addr-line><![CDATA[ Mexico DF]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Jaén  ]]></institution>
<addr-line><![CDATA[Jaén ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,National University of Piura  ]]></institution>
<addr-line><![CDATA[Piura ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Toribio Rodríguez de Mendoza de Amazonas National University  ]]></institution>
<addr-line><![CDATA[Chachapoyas ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Toribio Rodríguez de Mendoza de Amazonas National University  ]]></institution>
<addr-line><![CDATA[Chachapoyas ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>37</volume>
<numero>1</numero>
<fpage>6</fpage>
<lpage>18</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-01352020000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-01352020000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-01352020000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Water is a fundamental nutrient in the life of any living being. Therefore, it is necessary to estimate its quality, because it is an issue of increasing concern countries around the world for reasons such as the health of the population, regional, national and international economic development, and the environmental quality of the ecosystems. One tool that has been used to know the state of the water is the water quality indexes (WQI). The objective of this research was to develop a WQI based on fuzzy logic, which allows for the estimation of water quality in the Utcubamba River. The methodology used was proposed by Icaga in 2007. To evaluate the proposed WQI called "Diffuse Water Quality Index" (DWQI), sixteen points from the sampling conducted by the Research Institute for Sustainable Development during October 2014 on the Utcubamba River and its tributaries were used. To validate the index, it was necessary to estimate the correlation coefficient R2 between the results obtained and those of the NSF WQI wáter quality index reported by the Water Research Center. This new index presented results and reasonable correlation, R2 = 0.81. It is concluded that DWQI can be used as a tool for decision making in the water management of the Utcubamba River.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El agua es un nutriente fundamental en la vida de cualquier ser vivo. Por ello, es necesario estimar su calidad, debido a que es un tema que preocupa cada vez más a los países de todo el mundo por motivos como la salud de la población, el desarrollo económico regional, nacional e internacional y la calidad ambiental de los ecosistemas. Una herramienta que se viene utilizando para conocer el estado del agua son los índices de calidad de agua (ICA). El objetivo de la presente investigación fue desarrollar un ICA basado en lógica difusa, que permita estimar la calidad del agua del río Utcubamba. La metodología que se ha empleado fue planteada por Icaga el 2007. Para evaluar el ICA propuesto denominado &#8220;Índice de Calidad de Agua Difuso&#8221; (ICAD) se emplearon dieciséis puntos del muestreo realizado por el Instituto de Investigación para el Desarrollo Sustentable durante octubre del 2014 en el río Utcubamba y sus afluentes. Para validar el índice fue necesario estimar el coeficiente de correlación R2 entre los resultados obtenidos con los del índice de Calidad de Agua NSF WQI reportados por el Centro de Investigación del Agua. Este nuevo índice presentó resultados y correlación razonable, R2 = 0.81. Se concluye que ICAD puede ser utilizado como herramienta para la toma de decisiones en la gestión hídrica del río Utcubamba.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Water analysis]]></kwd>
<kwd lng="en"><![CDATA[water chemistry]]></kwd>
<kwd lng="en"><![CDATA[water pollution]]></kwd>
<kwd lng="en"><![CDATA[computer application]]></kwd>
<kwd lng="en"><![CDATA[artificial intelligence.]]></kwd>
<kwd lng="es"><![CDATA[Análisis del agua]]></kwd>
<kwd lng="es"><![CDATA[química del agua]]></kwd>
<kwd lng="es"><![CDATA[contaminación del agua]]></kwd>
<kwd lng="es"><![CDATA[aplicación informática]]></kwd>
<kwd lng="es"><![CDATA[inteligencia artificial.]]></kwd>
</kwd-group>
</article-meta>
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