<?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>2346-3775</journal-id>
<journal-title><![CDATA[Tropical Grasslands-Forrajes Tropicales]]></journal-title>
<abbrev-journal-title><![CDATA[Trop. Grassl.-Forrajes Trop.]]></abbrev-journal-title>
<issn>2346-3775</issn>
<publisher>
<publisher-name><![CDATA[Centro Internacional de Agricultura Tropical (CIAT)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2346-37752018000200070</article-id>
<article-id pub-id-type="doi">10.17138/tgft(6)70-81</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Agronomic characterization of Paspalum atratum Swallen and P. lenticulare Kunth]]></article-title>
<article-title xml:lang="es"><![CDATA[Caracterización agronómica de Paspalum atratum Swallen y Paspalum lenticulare Kunth]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MARCÓN]]></surname>
<given-names><![CDATA[FLORENCIA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[URBANI]]></surname>
<given-names><![CDATA[MARIO H.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[QUARIN]]></surname>
<given-names><![CDATA[CAMILO L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[ACUÑA]]></surname>
<given-names><![CDATA[CARLOS A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional del Nordeste Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<volume>6</volume>
<numero>2</numero>
<fpage>70</fpage>
<lpage>81</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S2346-37752018000200070&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S2346-37752018000200070&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S2346-37752018000200070&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Paspalum atratum and P. lenticulare are perennial grasses, native to South America. The objective was to evaluate seasonal growth, frost tolerance, cattle preference, nutritional characteristics, seed yield and germination of 11 ecotypes of P. atratum and P. lenticulare with regard to their potential as alternatives to introduced species. Forage yield was evaluated during 3 growing seasons between 2011 and 2014. Digestibility and CP concentration were assessed in summer 2014, cattle preference in winter 2013 and summer 2015, frost tolerance after the first frosts in June 2012, flowering time during 2013 and 2014 and seed yield and germination in 2014. A marked warm-season growing period was observed for both species with annual forage yields varying from 5 to 12 t DM/ha. Flowering did not occur until autumn, with mean seed yield of 280 kg/ha and germination of 16% for P. atratum and 19% for P. lenticulare. Most ecotypes were able to tolerate winter temperatures and behaved as perennials. Although no differences were observed for DM digestibility and CP concentration among accessions, cattle preferentially grazed accession P. atratum U44. Further studies are needed to evaluate persistence under grazing and animal performance.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En Corrientes, Argentina, se evaluaron algunas características agronómicas y de calidad de 11 ecotipos de Paspalum atratum y P. lenticulare, especies nativas de Sur América. La producción de forraje fue determinada entre 2011 y 2014, la digestibilidad y concentración de proteína en verano 2014 y la preferencia animal en invierno 2013 y verano 2015. La tolerancia al frío fue estimada en junio de 2012, el momento de floración durante 2013 y 2014, y la producción de semilla y la germinación en 2014. Los ecotipos de ambas especies mostraron un crecimiento estival marcado y la producción anual de forraje varió entre 5 y 12 t MS/ha. La floración ocurrió a comienzos del otoño, la producción de semillas fue de 280 kg/ha en promedio, y la germinación de 16% (P. atratum) y 19% (P. lenticulare). Con excepción de un ecotipo de P. lenticulare el germoplasma evaluado persistió en la época de invierno y se comportó como perenne. No se observaron diferencias entre los ecotipos en la concentración de proteína cruda y digestibilidad; sin embargo el ecotipo P. atratum U44 fue pastoreado preferencialmente. Futuros estudios serán necesarios para determinar la persistencia en pastoreo y la producción animal de los diferentes ecotipos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Cattle preference]]></kwd>
<kwd lng="en"><![CDATA[forage yield]]></kwd>
<kwd lng="en"><![CDATA[frost tolerance]]></kwd>
<kwd lng="en"><![CDATA[nutritive value]]></kwd>
<kwd lng="en"><![CDATA[seed yield]]></kwd>
<kwd lng="es"><![CDATA[Preferencia animal]]></kwd>
<kwd lng="es"><![CDATA[producción de semilla]]></kwd>
<kwd lng="es"><![CDATA[rendimiento de forraje]]></kwd>
<kwd lng="es"><![CDATA[tolerancia al frío]]></kwd>
<kwd lng="es"><![CDATA[valor nutritivo]]></kwd>
</kwd-group>
</article-meta>
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