<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792020000500735</article-id>
<article-id pub-id-type="doi">10.28940/terra.v38i4.558</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Influencia de diferentes sistemas agroecológicos en los indicadores químicos de un suelo cultivado de frijol (Phaseolus vulgaris L.)]]></article-title>
<article-title xml:lang="en"><![CDATA[Influence of different agroecological systems on the chemical indicators of a cultivated soil of beans (Phaseolus vulgaris L.)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivero-Herrada]]></surname>
<given-names><![CDATA[Marisol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Rivero]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Granados-Rivas]]></surname>
<given-names><![CDATA[Yanila Esther]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Varas-Maenza]]></surname>
<given-names><![CDATA[Cesar Cristóbal]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Técnica Estatal de Quevedo  ]]></institution>
<addr-line><![CDATA[Quevedo Los Ríos]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Ministerio de Ciencia Tecnología y Medio Ambiente  ]]></institution>
<addr-line><![CDATA[Bayamo Granma]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>38</volume>
<numero>4</numero>
<fpage>735</fpage>
<lpage>743</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792020000500735&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792020000500735&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792020000500735&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El sistema agroecológico tiene repercusión importante en el estado nutricional del suelo, que depende de su preparación y plantas que se cultivan. El presente trabajo tuvo como objetivo evaluar la influencia de diferentes sistemas agroecológicos en los indicadores químicos de un suelo cultivado de frijol (Phaseolus vulgaris L.). Se utilizó un diseño experimental de bloques al azar, ocho tratamientos y cuatro repeticiones. Los tratamientos fueron plantas de cobertura: frijol de puerco (Canavalia ensiformis, Adans.), mucuna (Mucuna pruriens), frijol gandul (Cajanus cajan (L.) Mill sp.), crotalaria (Crotalaria sp. L.) sembradas en dos sistemas de cultivos: monocultivo y asociadas con mijo (Pennisetum glaucum L.) y dos sistemas de sistema de preparación del suelo: convencional y siembra directa. Los indicadores químicos evaluados fueron: pH, materia orgánica, macro y micros nutrientes (P, K, Ca, Mg, Fe, Mn, Zn) y el rendimiento en el cultivo del frijol. El sistema de siembra directa tuvo influencia sobre los indicadores químicos del suelo, disminuyó el pH (5.26), altos contenidos de Ca y K, con valores de 1.64 y 73.21 mg kg-1 respectivamente, con respecto al sistema convencional. Los micronutrientes Cu y Zn tuvieron valores significativos de 0.97 y 1.38 mg kg-1 respectivamente, con respecto al sistema convencional. Los contenidos de Mg y K alcanzaron valores muy cercanos a los del suelo natural. En el rendimiento del cultivo del frijol se destacó el cultivo frijol de puerco con el mayor número de vainas por planta (14.25), granos por vainas (5.93) y granos por planta (84) y un rendimiento de 4.4 Mg ha-1.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: The agroecological system has an important impact on the nutritional status of the soil, which depends on its preparation and the plants that are grown. The aim of this work was to evaluate the influence of different agroecological systems on the chemical indicators of a soil cultivated with beans (Phaseolus vulgaris L.). An experimental design of randomized blocks, eight treatments and four replicates, was used. The treatments were cover plants: jack bean (Canavalia ensiformis, Adans.), velvet bean (Mucuna pruriens), pigeon pea (Cajanus cajan (L.) Mill sp.), and crotalaria (Crotalaria sp. L.) planted in two cultivation systems: monoculture and associated with millet (Pennisetum glaucum L.), and two systems of soil preparation: conventional and direct seeding. The chemical indicators evaluated were: pH, organic matter, macro and micro nutrients (P, K, Ca, Mg, Fe, Mn, and Zn) and the yield in the bean crop. The direct sowing system had influence on the chemical indicators of the soil, decreased pH (5.26), high contents of Ca and K, with values of 1.64 and 73.21 mg kg-1 respectively, with regard to the conventional system. Micronutrients Cu and Zn had significant values of 0.97 and 1.38 mg kg-1 respectively, with regard to the conventional system. Mg and K contents reached values very close to those of natural soil. In bean crop yield, the jack bean crop was highlighted with the highest number of pods per plant (14.25), grains per pods (5.93), grains per plant (84) and a yield of 4.4 Mg ha-1.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fertilidad del suelo]]></kwd>
<kwd lng="es"><![CDATA[leguminosas]]></kwd>
<kwd lng="es"><![CDATA[sistema]]></kwd>
<kwd lng="en"><![CDATA[soil fertility]]></kwd>
<kwd lng="en"><![CDATA[legumes]]></kwd>
<kwd lng="en"><![CDATA[management system]]></kwd>
</kwd-group>
</article-meta>
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