<?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>2305-0683</journal-id>
<journal-title><![CDATA[Investigación Agraria]]></journal-title>
<abbrev-journal-title><![CDATA[Investig. Agrar.]]></abbrev-journal-title>
<issn>2305-0683</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ciencias Agrarias, UNA.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2305-06832017000100016</article-id>
<article-id pub-id-type="doi">10.18004/investig.agrar.2017.junio.16-27</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de la variabilidad espacial de la rentabilidad del cultivo de soja en una propiedad del Distrito de Villeta - Departamento Central]]></article-title>
<article-title xml:lang="en"><![CDATA[Analysis of the spatial variability of the yield of soybean crop in a property of the District of Villeta - Central Department]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bonnin]]></surname>
<given-names><![CDATA[Juan Jose]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera Romero]]></surname>
<given-names><![CDATA[María Gloria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Franco Ibars]]></surname>
<given-names><![CDATA[Rubén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivas Ullón]]></surname>
<given-names><![CDATA[Henry David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chamorro Díaz]]></surname>
<given-names><![CDATA[Sergio Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad de Ciencias Agrarias Área de Ingeniería Agrícola]]></institution>
<addr-line><![CDATA[San Lorenzo ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad de Ciencias Agrarias Área de Economía Rural]]></institution>
<addr-line><![CDATA[San Lorenzo ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad París Diderot Unidad de Formación e Investigación en Geografía, Historia, Economía y Sociedades ]]></institution>
<addr-line><![CDATA[Paris ]]></addr-line>
<country>Francia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>19</volume>
<numero>1</numero>
<fpage>16</fpage>
<lpage>27</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2305-06832017000100016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2305-06832017000100016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2305-06832017000100016&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El objetivo de la investigación fue crear un mapa de la variabilidad espacial de la rentabilidad de la soja, a través de datos de productividad del cultivo, a fin de analizar la viabilidad económica del mismo. El trabajo se realizó durante la zafra 2014/2015, en la agro-ganadera Querencia (Villeta-Central). La variedad de soja utilizada fue Syn 1161RR. La implantación del cultivo fue en una superficie de 21,03 ha, en un sistema de siembra directa, donde la fertilización, control de malezas, enfermedades y plagas fueron realizadas de acuerdo con las recomendaciones y necesidades del cultivo. Para la obtención de la rentabilidad, primeramente, fue determinada la productividad del cultivo a través de un muestreo en malla, de modo a proporcionar el mayor número de puntos posibles para la caracterización del área. La localización y distribución geográfica de los puntos de muestreo se efectuó con un receptor GPS-Trimble. Se realizó un análisis exploratorio y análisis geoestadístico de los datos, a fin de la determinación de la dependencia espacial y generación de los mapas. La creación de un mapa de lucratividad, a partir de datos de la productividad, se mostró adecuada, permitiendo observar la variabilidad espacial del lucro, cuando comparado con el promedio del área, lo que permitió contar con una información precisa de la viabilidad económica del cultivo bajo esas condiciones. La productividad promedio fue de 3.753,33 kg ha-1, superior a la media nacional, donde el 71,95% del área presentó un rendimiento de 2.403,11 a 4.267,17 kg ha-1, con una rentabilidad de 409,93 a 969,15 US$ ha-1.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The aim of the research was to create a map of the spatial variability of the yield of soybean, through crop productivity data, in order to assess the economic viability of the crop. The work was conducted during the 2014/2015 harvest on the farm Querencia (Villeta-Central). The soybean variety used was Syn 1161RR. The implementation of the crop was in an area of 21.03 ha, in a system of direct seeding, where fertilization, weed control, pests and diseases were carried out in accordance with the recommendations and requirements of the crop. To obtain the yield, productivity was determined first, through mesh sampling, to provide the greatest possible number of points for the characterization of the area. The location and geographical distribution of the sampling points were performed with a Trimble GPS-receiver. An exploratory analysis and geostatistical analysis of the data were carried out in order to determine the spatial dependence and generation of maps. The elaboration of a profitability map, from productivity data, was adequate, allowing observing the spatial variability of profit, when compared to the average for the area, which allowed obtaining precise information of the economic viability of cultivation under these conditions. The average productivity was 3.753.33 kg ha-1, higher than the national average, where 71.95% of the area presented a yield of 2.403.11 to 4267.17 kg ha-1, with a profit of 409.93 to 969.15 US$ ha-1.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Glycine max (L.)]]></kwd>
<kwd lng="es"><![CDATA[agricultura de precisión]]></kwd>
<kwd lng="es"><![CDATA[costo de producción]]></kwd>
<kwd lng="en"><![CDATA[Glycine max (L.)]]></kwd>
<kwd lng="en"><![CDATA[precision agriculture]]></kwd>
<kwd lng="en"><![CDATA[production cost.]]></kwd>
</kwd-group>
</article-meta>
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