<?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>0253-5785</journal-id>
<journal-title><![CDATA[Centro Agrícola]]></journal-title>
<abbrev-journal-title><![CDATA[Ctro. Agr.]]></abbrev-journal-title>
<issn>0253-5785</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo, Universidad Central de Las Villas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0253-57852021000200005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variabilidad espacial de la materia orgánica de suelos cultivados con Ipomoea batatas (L.) Lam.]]></article-title>
<article-title xml:lang="en"><![CDATA[Spatial variability of organic matter in soils cropped with Ipomoea batatas (L.) Lam.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Aguiar]]></surname>
<given-names><![CDATA[Diana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Colás-Sánchez]]></surname>
<given-names><![CDATA[Ariany]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-López]]></surname>
<given-names><![CDATA[Oralia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez-Vázquez]]></surname>
<given-names><![CDATA[Delia Luisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gattorno-Muñoz]]></surname>
<given-names><![CDATA[Sirley]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chacón-Iznaga]]></surname>
<given-names><![CDATA[Ahmed]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Ciencias Agropecuarias Departamento de Ingeniería Agrícola]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Ciencias Agropecuarias Centro de Investigaciones Agropecuarias]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Instituto de Biotecnología de las Plantas ]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Ciencias Agropecuarias Departamento de Agronomía]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>48</volume>
<numero>2</numero>
<fpage>5</fpage>
<lpage>13</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0253-57852021000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0253-57852021000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0253-57852021000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La investigación se desarrolló en la Empresa Agropecuaria Valle del Yabú, situada en la periferia norte del municipio Santa Clara, provincia Villa Clara. El objetivo fue caracterizar la variabilidad espacial de materia orgánica en áreas agrícolas cultivadas con boniato (Ipomoea batatas (L.) Lam. cv. INIVIT B- 2005), sobre un suelo Pardo mullido medianamente lavado. Estas muestras de suelo fueron colectadas en el año 2016 en dos niveles: 1) paisaje edáfico (diferentes áreas agrícolas) y 2) campos específicos. Las muestras de suelo se secaron al aire a temperatura ambiente hasta obtener peso constante y se les realizó el análisis químico convencional con el método de Walkley-Black para determinar el porciento de materia orgánica. Las concentraciones existentes en las áreas agrícolas se evaluaron mediante escala y su variabilidad espacial se comparó mediante el coeficiente de variación (CV) y la escala de Aweto. Los datos se procesaron con las funciones estadísticas incluidas en el Paquete de herramientas de análisis de Microsoft Excel 2007. Los resultados mostraron que la variabilidad espacial de la materia orgánica del suelo estuvo en el rango de bajo a moderado con coeficientes de variación de 22,52 a 30,55 % en el paisaje edáfico y de 19,13 a 37 % en los campos específicos analizados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The research work was developed in the Agricultural Company &#8220;Valle del Yabú&#8221;, located at north of Santa Clara municipality, Villa Clara province. The objective was to characterize the spatial variability of organic matter in soils cropped with sweet potato (Ipomoea batatas (L.) Lam. cv. INIVIT B - 2005), on Cambisol soils. Soil samples were collected in 2016 at two levels: 1) landscape (different agricultural areas) and 2) specific fields. The soil samples were air-dried at room temperature until constant weight was obtained and the conventional chemical analysis was carried out with the Walkley-Black method to determine the percentage of organic matter. The existing concentrations in the agricultural areas were assessed with scale and its spatial variability was compared by means of the coefficient of variation (CV) and the Aweto scale. The data was processed with the statistical functions included in the Microsoft Excel 2007 Analysis Tools Pack. The results showed that the spatial variability of soil organic matter was in the low to moderate range with variation coefficients of 22.52 to 30.55 % in the edaphic landscape and from 19.13 to 37 % in the specific fields analyzed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[análisis químico]]></kwd>
<kwd lng="es"><![CDATA[cultivo]]></kwd>
<kwd lng="es"><![CDATA[fertilidad del suelo]]></kwd>
<kwd lng="en"><![CDATA[chemical analysis]]></kwd>
<kwd lng="en"><![CDATA[crop]]></kwd>
<kwd lng="en"><![CDATA[soil fertility]]></kwd>
</kwd-group>
</article-meta>
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