<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792014000200099</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Disponibilidad de nitrógeno y desarrollo de avena forrajera ( Avena sativa L.) con aplicación de biosólidos.]]></article-title>
<article-title xml:lang="en"><![CDATA[Nitrogen availability and growth of forage oats ( Avena sativa L.) with application biosolids.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores Félix]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno Casillas]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Figueroa Viramontes]]></surname>
<given-names><![CDATA[Uriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Potisek Talavera]]></surname>
<given-names><![CDATA[María del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ecosistema de Ciudad Lerdo S. A. de C. V.  ]]></institution>
<addr-line><![CDATA[Cd. Lerdo Durango]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de La Laguna Departamento de Ingeniería Química ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,INIFAP Campo Experimental La Laguna ]]></institution>
<addr-line><![CDATA[Matamoros Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,INIFAP CENID-RASPA ]]></institution>
<addr-line><![CDATA[Gómez Palacio Durango]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2014</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>99</fpage>
<lpage>105</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792014000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792014000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792014000200099&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se estableció un experimento para evaluar dosis crecientes de fertilizante sintético y biosólidos líquidos digeridos aeróbicamente en un cultivo de avena forrajera, para 1) evaluar la respuesta agronómica de la avena forrajera a la aplicación de nitrógeno (N) como sulfato de amonio y biosólidos, y 2) estimar la disponibilidad de N en los biosólidos en el ciclo de cultivo, mediante el método de equivalencia de fertilizante (EF). Los tratamientos fueron diseñados para aportar 0, 67, 100 y 133% del requerimiento de N del cultivo (RNC) de avena forrajera con ambas fuentes de N. El 100% del RNC fue de 144 kg ha-1, al cual se restó el N residual del suelo y el N del agua de riego, por lo que la dosis de fertilizante para cubrir el 100% del RNC fue de 95 kg ha-1. La altura de planta se incrementó hasta en un 53% con ambas fuentes de N, con respecto al testigo sin fertilizar. El rendimiento de materia seca (MS) obtenido en las parcelas con biosólidos fue significativamente mayor que con fertilizante sintético. Con ambas fuentes de N, el rendimiento de MS se ajustó a una ecuación de regresión lineal, en función de la dosis de N. De acuerdo con el método de EF, las dosis de 160.9 kg ha-1 de N total con biosólidos (DNbios) y 37.5 kg ha-1 de N inorgánico con fertilizante (DNbios), tuvieron 103.2 kg ha-1 de N extraído por el cultivo (Next). La disponibilidad de N del biosólido (NDbios) se calculó como la proporción de la DNfert con respecto a la DNbios para un mismo valor de Next, expresado en porcentaje; en el presente estudio, el NDbios fue de 23.3%. La estimación del N disponible es importante para estimar dosis de aplicación de biosólidos con base en el requerimiento de N de los cultivos, evitando así aplicaciones excesivas y riesgos de contaminación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: An experiment was established with increasing rates of fertilizer and aerobically digested liquid biosolids in forage oats to 1) evaluate the agronomic response of forage oats to nitrogen (N) applied as ammonium sulfate or biosolids and 2) to estimate the available nitrogen in biosolids during the growing season, using the fertilizer equivalence (FE) method. The treatments were designed to provide 0, 67, 100 and 133% of the crop N requirement (CNR). The N rate at 100% of the CNR was 144 kg N ha-1, to which the soil N and irrigation water N were subtracted, so the fertilizer rate to provide 100% of the CNR was 95 kg ha-1. Plant height increased up to 53% with both sources of N, relative to the control without N. Dry matter (DM) yield obtained in the plots with biosolids was significantly higher than with fertilizer. With both sources of N, DM yield was adjusted to a linear regression equation, as a function of N rate. According to the FE, with the rate of 160.9 kg ha-1 of total N in biosolids (NRbios) and 37.5 kg ha-1 of inorganic fertilizer (NRfert), 103.2 kg ha-1 N was extracted by the crop (Next). The available N in biosolids (ANbios) was calculated as the ratio between NRfert and NRbios, expressed in percentage; in this study, the ANbios was 23.3%. Estimation of available N is important in estimating biosolids rates, based on the N requirement of crops, thus avoiding excessive applications and risks of contamination.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[rendimiento de forraje]]></kwd>
<kwd lng="es"><![CDATA[nitrógeno en planta]]></kwd>
<kwd lng="es"><![CDATA[extracción de nitrógeno]]></kwd>
<kwd lng="en"><![CDATA[forage yield]]></kwd>
<kwd lng="en"><![CDATA[plant nitrogen]]></kwd>
<kwd lng="en"><![CDATA[nitrogen extraction]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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