<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342016000300481</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cambios en la calidad de dos suelos bajo el uso de torobas en región semiárida Venezolana]]></article-title>
<article-title xml:lang="en"><![CDATA[Changes in the quality of two soils under torobas use in semiarid region of Venezuelan]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[Nectali]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[Duilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yendis]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[Miklas]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zamora]]></surname>
<given-names><![CDATA[Frank]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Agrícolas Complejo Docente el Hatillo Departamento de Producción y Desarrollo Agrícola]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Centro occidental Lisandro Alvarado Departamento de Química y Suelos ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Investigaciones Agrícolas Complejo docente el Hatillo Departamento de Ambiente y Tecnología Agrícola]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Investigaciones Agrícolas Estación Experimental Falcón y Complejo Docente el Hatillo Departamento de Producción y Desarrollo Agrícola]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>05</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>05</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>3</numero>
<fpage>481</fpage>
<lpage>492</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342016000300481&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342016000300481&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342016000300481&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Con el objeto de evaluar el dispositivo antierosivo denominado toroba, se determinaron las propiedades físicas y químicas del suelo, luego de 20 años de funcionamiento del mismo. Para ello, se tomaron muestras de suelo de dos torobas: una, ubicada en la zona de Zamurito; otra, en Mide, ubicada en la zona occidental del estado Falcón. Se obtuvieron muestras de suelo de acuerdo con la posición de la toroba (alta, media y baja). Las muestras se colectaron a la profundidad (0-20 cm). Se evaluaron las siguientes propiedades: distribución de tamaño de partículas, densidad aparente, conductividad hidráulica saturada, espacio poroso total, porcentaje de macro y microporos, velocidad de infiltración y estabilidad de agregados. En cuanto a las propiedades químicas, se evaluó la reacción del suelo (pH), la conductividad eléctrica (CE), la materia orgánica (MO) y el nitrógeno (N), fósforo (P) y potasio disponible (K). Los datos se analizaron mediante un análisis de varianza y pruebas de media de Tukey, usando el programa estadístico Infostat. Los resultados mostraron que las condiciones físicas más adversas en el sector Zamurito, estuvieron asociados al pobre desarrollo estructural y los altos contenidos de arcilla y lim. En el sector Mide, las condiciones físicas favorecieron la infiltración del agua. La mayor acumulación de nutrientes se observó en el sector Zamurito, producto de los aportes de materia orgánica proveniente de los restos vegetales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In order to evaluate the antierosivo device called toroba, physical and chemical properties of the soil were determined, after 20 years of operation thereof they. For this purpose, soil samples were taken two torobas: one located in the area of Zamurito; another, in Mide, located in western Falcon state. Soil samples according to the position of the toroba (high, medium and low) were obtained. Samples were collected at depth (0-20 cm). The particle size distribution, bulk density, saturated hydraulic conductivity, and total pore space and micropores percentage of macro, infiltration rate and aggregate stability: The following properties were evaluated as for the chemical properties, soil reaction (pH), electrical conductivity (CE), organic matter (MO) and nitrogen (N), phosphorus (P) and available potassium (K). Data were analyzed by analysis of variance and Tukey tests average, using the statistical program Infostat. The results showed that the most difficult in the industry Zamurito physical conditions were associated with poor structural development and high content of clay and lim. Mide in the sector, physical conditions favored water infiltration. Most nutrient accumulation was observed in the Zamurito sector product of the contributions of organic matter from plant debris.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aridez]]></kwd>
<kwd lng="es"><![CDATA[desertificación]]></kwd>
<kwd lng="es"><![CDATA[fertilidad]]></kwd>
<kwd lng="en"><![CDATA[aridity]]></kwd>
<kwd lng="en"><![CDATA[desertification]]></kwd>
<kwd lng="en"><![CDATA[fertility]]></kwd>
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</article-meta>
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