<?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>S2007-09342016000601389</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Relación NO 3 - /K + en la solución nutritiva en el crecimiento y rendimiento de pepino hidropónico]]></article-title>
<article-title xml:lang="en"><![CDATA[RNO 3 - /K + ratio in nutrient solution on growth and yield of hydroponic cucumber]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Parra Terraza]]></surname>
<given-names><![CDATA[Saúl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Terán]]></surname>
<given-names><![CDATA[Gustavo Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubio Carrasco]]></surname>
<given-names><![CDATA[Werner]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Verdugo]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Sinaloa  ]]></institution>
<addr-line><![CDATA[Culiacán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo A. C.  ]]></institution>
<addr-line><![CDATA[Culiacán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>6</numero>
<fpage>1389</fpage>
<lpage>1400</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342016000601389&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342016000601389&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342016000601389&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen A la relación NO3 -/K+ en la solución nutritiva (SN) se le considera un factor clave para obtener altos rendimientos; sin embargo, por la falta de investigaciones al respecto, su importancia está sujeta a discusión. El objetivo de este trabajo fue evaluar en invernadero el efecto de tres relaciones NO3 -/aniones (40, 60 y 80/100) y tres de K+/cationes (15, 35 y 55/100) sobre el crecimiento, composición mineral y el rendimiento de pepino (Cucumis sativus L. cultivar Luxell). El experimento constó de dos etapas: la 1, desde la siembra al trasplante, y la 2, desde trasplante hasta cosecha; en ambas etapas el diseño experimental utilizado fue completamente al azar con arreglo factorial 32. En la etapa1, los efectos de las relaciones NO3 -/K+ sobre las variables de crecimiento no fueron significativos, aunque para las concentraciones de P, K y Mg en hojas hubo significancia. En la etapa 2, hubo diferencias (p&#8804; 0.05) en el rendimiento para la relación NO3 -/aniones y para K+/cationes, pero no para su interacción. El mayor rendimiento (90.56 t ha-1) se obtuvo con la relación intermedia (60/100 NO3 -/aniones), mientras que para la relación K+/cationes el mayor rendimiento (83.40 t ha-1) fue obtenido también con la relación intermedia (35/100). Con relaciones altas de NO3 -/aniones y de K+/cationes, los rendimientos disminuyen 9.98 y 31.84%, respectivamente, por lo que es indispensable hacer un manejo equilibrado de las relaciones NO3 -/aniones y de K+/cationes en la SN para no alterar las concentraciones nutrimentales en las hojas y reducir el rendimiento de pepino cultivado en hidroponía.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract NO3 - / K+ ratio in the nutrient solution (SN) is considered a key factor to obtaining high yields; however, by the lack of research on the subject, its importance is subject to discussion. The aim of this study was to evaluate under greenhouse the effect of three ratios NO3 -/anions (40, 60 and 80/100) and three of K+/cations (15, 35 and 55/100) on growth, mineral composition and yield on cucumber (Cucumis sativus L. cultivar Luxell). The experiment consisted of two stages: first stage from sowing to transplant, and second from transplanting to harvest; in both stages the experimental design was completely randomized with a factorial arrangement 32. In stage 1, the effects of NO3 -/K+ ratios on growth variables were not significant, although the concentrations of P, K and Mg on leaves were significant. In Stage 2, there were differences (p&#8804; 0.05) in yield for NO3 -/ anions and K+/ cations ratios, but not for their interaction. The highest yield (90.56 t ha-1) was obtained with the intermediate ratio (60/100 NO3 -/anions), while for K+/ cations the highest yield (83.40 t ha-1) was also obtained with the intermediate ratio (35/100). With high ratios of NO3 -/anions and K+/ cations, yields decreased 9.98 and 31.84%, respectively, so it is essential to have balance in the management of NO3 -/anions and K+/cations ratios in the SN to not alter nutrient concentrations in leaves and reduce the yield of cucumber grown in hydroponics.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cucumis sativus]]></kwd>
<kwd lng="es"><![CDATA[relación N/K]]></kwd>
<kwd lng="es"><![CDATA[relación nitrato/aniones]]></kwd>
<kwd lng="es"><![CDATA[relación potasio/cationes]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="en"><![CDATA[Cucumis sativus]]></kwd>
<kwd lng="en"><![CDATA[N/K ratio]]></kwd>
<kwd lng="en"><![CDATA[nitrate/anions ratio]]></kwd>
<kwd lng="en"><![CDATA[potassium/cation ratio]]></kwd>
<kwd lng="en"><![CDATA[yield]]></kwd>
</kwd-group>
</article-meta>
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