<?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>0864-0394</journal-id>
<journal-title><![CDATA[Pastos y Forrajes]]></journal-title>
<abbrev-journal-title><![CDATA[Pastos y Forrajes]]></abbrev-journal-title>
<issn>0864-0394</issn>
<publisher>
<publisher-name><![CDATA[Estación Experimental de Pastos y Forrajes Indio Hatuey]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-03942019000200125</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comportamiento agronómico de tres variedades de alfalfa (Medicago sativa L.) con diferentes dosis de fertilización fosfatada]]></article-title>
<article-title xml:lang="en"><![CDATA[Agronomic performance of three alfalfa (Medicago sativa L.) varieties with different phosphate fertilization doses]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oñate Viteri]]></surname>
<given-names><![CDATA[Wilson]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores Mariazza]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Escuela Superior Politécnica de Chimborazo EC060155 Facultad de Ciencias Pecuarias ]]></institution>
<addr-line><![CDATA[Riobamba ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Agraria Laboratorio de Ecología y Utilización de Pastizales ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>42</volume>
<numero>2</numero>
<fpage>125</fpage>
<lpage>132</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-03942019000200125&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-03942019000200125&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-03942019000200125&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este estudio fue evaluar el comportamiento agronómico de tres variedades de Medicago sativa L. con tres dosis de fertilización fosfatada, durante el establecimiento, en la serranía ecuatoriana. El ensayo se realizó en la Estación Experimental Tunshi, ubicada en el cantón Riobamba, provincia de Chimborazo -Ecuador-. Los tratamientos fueron: las variedades de alfalfa como factor A (abunda verde, cuf-101 y sw-8210) y las dosis de fertilización (0, 50, 100 y 150 kg/P/ha) como factor B, frente al ecotipo flor morada (control). Las parcelas experimentales se distribuyeron en un diseño de bloques completamente al azar, con arreglo en parcelas divididas y tres repeticiones; se realizó análisis de varianza y comparación de medias según Tukey. Se registraron diferencias significativas (p &lt; 0,05) para la interacción A x B. El porcentaje de emergencia cuando se aplicó 100 kg/P/ha fue de 95,67 % para la var. sw-8210, que difirió significativamente (p &lt; 0,05) del ecotipo flor morada sin fertilización (90,33 %). Este ecotipo alcanzó 99,59 % de cobertura aérea y 34,09 % de cobertura basal en el primer corte (110 días), y difirió significativamente (p &lt; 0,01) de las variedades introducidas. Flor morada sin fertilización produjo 17,23 y 4,52 t/ha por corte de forraje verde y forraje seco, respectivamente; y superó (p &lt; 0,01) a la variedad abunda verde (7,46 y 2,79 t/ha, respectivamente). Se concluye que el ecotipo flor morada presentó mayor rendimiento de forraje verde y seco, y mejor cobertura y altura de la planta sin fertilización fosfatada; asimismo, la cosecha se realizó a los 110 días de la siembra, cuando las plantas presentaron el 10 % de floración.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of this study was to evaluate the agronomic performance of three Medicago sativa L. varieties with three doses of phosphate fertilization, during establishment, in the Ecuadorian mountains. The trial was conducted at the Tunshi Research Station, located in the Riobamba canton, Chimborazo province -Ecuador-. The treatments were: the alfalfa varieties as factor A (abunda verde, cuf-101 and sw-8210) and the fertilization doses (0, 50, 100 and 150 kg P/ha) as factor B, compared with the ecotype flor morada (control). The experimental plots were distributed in a completely randomized block design, with split-plot arrangement and three repetitions; variance analysis and mean comparison according to Tukey were carried out. Significant differences (p &lt; 0,05) were recorded for the A x B interaction. The emergence percentage when 100 kg P/ha were applied was 95,67 % for the variety sw-8210, which differed significantly (p &lt; 0,05) from the ecotype flor morada without fertilization (90,33 %). This ecotype reached 99,59 % of aerial cover and 34,09 % of basal cover in the first cut (110 days), and differed significantly (p &lt; 0,01) from the introduced varieties. The ecotype flor morada without fertilization produced 17,23 and 4,52 t/ha per cut of green and dry forage, respectively; and surpassed (p &lt; 0,01) the variety abunda verde (7,46 and 2,79 t/ha, respectively). It is concluded that the ecotype flor morada showed higher green and dry forage yield, and better cover and plant height without phosphate fertilization; likewise, the harvest was performed at 110 days after sowing, when the plants showed 10 % of flowering.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ecotipos]]></kwd>
<kwd lng="es"><![CDATA[emergencia]]></kwd>
<kwd lng="es"><![CDATA[establecimiento de plantas]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="en"><![CDATA[ecotypes]]></kwd>
<kwd lng="en"><![CDATA[emergence, plant establishment]]></kwd>
<kwd lng="en"><![CDATA[yield]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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