<?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>0304-2847</journal-id>
<journal-title><![CDATA[Revista Facultad Nacional de Agronomía Medellín]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Fac. Nac. Agron. Medellín]]></abbrev-journal-title>
<issn>0304-2847</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ciencias Agrarias - Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0304-28472022000310009</article-id>
<article-id pub-id-type="doi">10.15446/rfnam.v75n3.99191</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Physiological and yield response to fertilization of short-cycle Solanum tuberosum cultivars in three high-Andean environments]]></article-title>
<article-title xml:lang="es"><![CDATA[Respuesta fisiológica y de rendimiento a la fertilización de cultivares de ciclo corto de Solanum tuberosum en tres ambientes altoandinos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benavides-Cardona]]></surname>
<given-names><![CDATA[Carlos Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marcillo-Paguay]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Gil]]></surname>
<given-names><![CDATA[Luis Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[Juan Vicente]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Nariño Facultad de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Pasto ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>75</volume>
<numero>3</numero>
<fpage>10009</fpage>
<lpage>10021</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0304-28472022000310009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0304-28472022000310009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0304-28472022000310009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The variability of potato cultivars and environments in the production area of Nariño-Colombia, demands the adjustment of agronomic recommendations for the improvement of crop management. Physiological behavior and yield of four short-cycle potato cultivars were evaluated: Solanum tuberosum Phureja groups (Mambera, Ratona Morada and Criolla Colombia) and Andigena (Morasurco), under three environments, characterized edaphoclimatically (AH1, AH2, and AH4) and three fertilization levels. The yield components did not present differences between these levels, except for AH2, where level 3 surpassed the others in yield, and AH3 for harvest index with differences between levels. Regarding the cultivars, there were statistical differences in all environments; the highest yield was obtained by Ratona Morada and Mambera in AH4, Criolla Colombia in AH1, and a homogeneous behavior for Morasurco in all environments. In AH1 and AH2 the physiological indexes were similar in proportion and occurrence, while in AH4 the behavior was variable, with higher values in Morasurco and Mambera. ANOVA and discriminant analysis of principal components (DAPC) differentiated Morasurco from Phureja cultivars and Criolla Colombia from Ratona and Mambera. The grouping of environments in the DAPC ratifies the classification of the environments. The nutritional requirements of the genotypes can be limited by elements different from those evaluated; the productivity was mainly influenced by the environments; Mambera and Ratona Morada are established as alternatives in the AH4 environment, and Criolla Colombia and Morasurco in the other environments.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La variabilidad de cultivares de papa y ambientes en la zona productora de Nariño-Colombia, demanda el ajuste de recomendaciones agronómicas para mejorar el manejo del cultivo. Se evaluó el comportamiento fisiológico y el rendimiento de cuatro cultivares de papa de ciclo corto: Solanum tuberosum grupos Phureja (Mambera, Ratona Morada y Criolla Colombia) y Andigena (Morasurco), bajo tres ambientes caracterizados edafoclimáticamente (AH1, AH2 y AH4) y tres niveles de fertilización. Los componentes de rendimiento no presentaron diferencias entre estos niveles, a excepción de AH2, donde el nivel 3 superó a los demás en rendimiento y AH3 para índice de cosecha con diferencias entre niveles. Con respecto a los cultivares, hubo diferencias estadísticas en todos los ambientes; el mayor rendimiento lo obtuvo Ratona Morada y Mambera en AH4, Criolla Colombia en AH1 y un comportamiento homogéneo para Morasurco en todos los ambientes. En AH1 y AH2 los índices fisiológicos fueron similares en proporción y ocurrencia, mientras en AH4 el comportamiento fue variable, con mayores valores en Morasurco y Mambera. El ANOVA y el análisis discriminante de componentes principales (DAPC) diferenciaron a los cultivares Morasurco de Phureja y a Criolla Colombia de Ratona y Mambera. La agrupación de ambientes en el DAPC ratifica la clasificación de los ambientes. Los requerimientos nutricionales de los genotipos pueden estar limitados por elementos diferentes a los evaluados; la productividad fue influenciada principalmente por los ambientes; se establece a Mambera y Ratona Morada como alternativa en el ambiente AH4, y Criolla Colombia y Morasurco en los otros ambientes.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Andigena]]></kwd>
<kwd lng="en"><![CDATA[Growth index]]></kwd>
<kwd lng="en"><![CDATA[Native genotypes]]></kwd>
<kwd lng="en"><![CDATA[Phureja]]></kwd>
<kwd lng="en"><![CDATA[Plant nutrition]]></kwd>
<kwd lng="en"><![CDATA[Productivity]]></kwd>
<kwd lng="es"><![CDATA[Andigena]]></kwd>
<kwd lng="es"><![CDATA[Índice de crecimiento]]></kwd>
<kwd lng="es"><![CDATA[Genotipos nativos]]></kwd>
<kwd lng="es"><![CDATA[Phureja]]></kwd>
<kwd lng="es"><![CDATA[Nutrición vegetal]]></kwd>
<kwd lng="es"><![CDATA[Productividad]]></kwd>
</kwd-group>
</article-meta>
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