<?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>S2007-09342016000501131</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Niveles de NPK para la producción de minitubérculos de papa en invernadero en el Valle de Toluca]]></article-title>
<article-title xml:lang="en"><![CDATA[NPK levels for the production of potato minitubers in greenhouse in the Toluca Valley]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores-López]]></surname>
<given-names><![CDATA[Román]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sotelo-Ruiz]]></surname>
<given-names><![CDATA[Erasto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubio-Cobarrubias]]></surname>
<given-names><![CDATA[Oswaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez-Gonzalez]]></surname>
<given-names><![CDATA[Amanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marín-Casimiro]]></surname>
<given-names><![CDATA[Maricela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>5</numero>
<fpage>1131</fpage>
<lpage>1142</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342016000501131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342016000501131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342016000501131&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La nutrición de la papa (Solanum tuberosum) en invernadero en México se hace mediante aplicación de fórmulas sólidas de NPK, aplicaciones foliares y el uso de soluciones nutritivas hidropónicas no específicas; por lo tanto, los rendimientos son bajos, muy variados e inconsistentes. Los objetivos de esta investigación fueron: 1) determinar las concentraciones de NPK adecuadas para la producción del clon 020342.1 de papa bajo condiciones de hidroponía; y 2) evaluar los rendimientos de minitubérculos bajo condiciones de invernadero. El experimento se realizó en los invernaderos del Campo experimental Toluca en Zinacantepec, Estado de México en el año 2012. El sustrato utilizado fue perlita; se empleó el diseño San Cristóbal, con cuatro niveles de NPK respectivamente y doce tratamientos; las variables evaluadas fueron clorofila, índice de área foliar (IAF), peso fresco, número y diámetro de minitubérculos. Los tratamientos con mayor contenido de clorofila durante el ciclo del cultivo fueron: T12 y T10 con 144 y 158 µg g-1 respectivamente; la altura, peso fresco y número de tubérculos presentan diferencias significativas, donde los mejores tratamientos fueron el T10, T12, T8 y T6. Para el peso fresco de tubérculo, destacaron el T6 y T10, con 230 y 232 g respectivamente. Para el número de tubérculos totales, sobresalen el T8 con 18.6 tubérculos por planta, T12 con 18.2, T10 con 18.1 y T6 con 16.8. En conclusión, las concentraciones mayores de 150N y 300K aumentaron la tuberización y rendimiento de minitubérculo del clon 020342.1 de papa en hidroponía.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The nutrition potato (Solanum tuberosum) in greenhouses in Mexico is done by applying solid formulations of NPK, foliar applications and the use of non-specific hydroponic nutrient solutions; therefore, yields are low, varied and inconsistent. The objectives of this research were to: 1) determine the concentrations of NPK suitable for the production of potato clone 020342.1 under hydroponics conditions; and 2) assess the yields of minitubers under greenhouse conditions. The experiment was conducted in the experimental greenhouses in Campo Toluca Zinacantepec, State of Mexico in 2012. The substrate used was perlite; San Cristobal design was used, with four levels of NPK respectively and twelve treatments; the variables were chlorophyll, leaf area index (IAF), fresh weight, number and diameter of minitubers. Treatments with higher chlorophyll content during the crop cycle were: T12 and T10 with 144 and 158 µg g-1 respectively; height, fresh weight and number of tubers significant differences, where the best treatments were the T10, T12, T8 and T6. For the fresh weight of tuber, they highlighted the T6 and T10, with 230 and 232 g respectively. For the total number of tubers, protrude T8 with 18.6 tubers per plant, T12 with 18.2, T10 to 18.1 and T6 to 16.8. In conclusion, the highest concentrations of 150N and 300K and increased tuber yield minituber clone 020342.1 potato hydroponics.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Solanum tuberosum]]></kwd>
<kwd lng="es"><![CDATA[hidroponía]]></kwd>
<kwd lng="es"><![CDATA[nutrición]]></kwd>
<kwd lng="en"><![CDATA[Solanum tuberosum]]></kwd>
<kwd lng="en"><![CDATA[hydroponics]]></kwd>
<kwd lng="en"><![CDATA[nutrition]]></kwd>
</kwd-group>
</article-meta>
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