<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662022000100139</article-id>
<article-id pub-id-type="doi">10.15174/au.2022.2433</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Short-term amendment of biosolid on agricultural soil: effects on C and N mineralization and microbial activity]]></article-title>
<article-title xml:lang="es"><![CDATA[Enmienda a corto plazo de un suelo agrícola con biosólidos: efectos sobre la mineralización de C-N y la actividad microbiana]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina-Herrera]]></surname>
<given-names><![CDATA[Miriam del Rocío]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Negrete-Rodríguez]]></surname>
<given-names><![CDATA[María de la Luz Xochilt]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bedolla-Rivera]]></surname>
<given-names><![CDATA[Héctor Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prieto-Rojas]]></surname>
<given-names><![CDATA[Manuel Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Conde-Barajas]]></surname>
<given-names><![CDATA[Eloy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológico Nacional de México  ]]></institution>
<addr-line><![CDATA[Celaya ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Tecnológico Nacional de México Departamento de Ingeniería Bioquímica y Ambiental ]]></institution>
<addr-line><![CDATA[Celaya Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Tecnológica de Salamanca Ingeniería en Tecnología Ambiental ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>32</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662022000100139&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662022000100139&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662022000100139&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Adding biosolids to agricultural soils can improve its quality through increased storage of C and N. A study to analyze the short-term impact of the addition of biosolids on the release of nutrients and the microbial activity in agricultural soil was carried out. The microbial biomass C (MB-C), urease activity (UA), and mineralization of N and C at different application rates of biosolids were evaluated (0 mg, 100mg and 200 mg of N-NH4 + kg-1). In addition, a biosolid-only treatment was tested. It was observed an increase in C and N mineralization, NH3 volatilization, and MB-C content, according to the application rate of biosolids. In biosolid treatments, UA increased 100% on average in the first seven days of incubation. These results suggest that the nutrient content in the soil is improved and microbial activity is positively stimulated.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La adición de biosólidos a suelos agrícolas puede ayudar a mejorar la calidad de dichos suelos mediante un mayor almacenamiento de C y N. Se realizó un estudio para analizar el impacto a corto plazo de la adición de biosólidos en la liberación de nutrientes y la actividad microbiana en el suelo. Se evaluó el C de la biomasa microbiana (MB-C), la actividad ureasa (UA) y la mineralización de N y C a diferentes dosis de aplicación de biosólidos (0 mg, 100 mg y 200 mg de N-NH4 + kg-1). Además, se probó un tratamiento solo con biosólidos. Se observó un aumento en la mineralización de C y N, volatilización de NH3 y contenido de MB-C, conforme a la tasa de aplicación. La UA aumentó en promedio 100% en los primeros siete días de incubación para los tratamientos de biosólidos. Estos resultados sugieren una mejora en el contenido de nutrientes y una estimulación positiva de la actividad microbiana.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Urease activity]]></kwd>
<kwd lng="en"><![CDATA[microbial biomass]]></kwd>
<kwd lng="en"><![CDATA[CO2 emissions]]></kwd>
<kwd lng="en"><![CDATA[nitrogen available]]></kwd>
<kwd lng="es"><![CDATA[Actividad ureasa]]></kwd>
<kwd lng="es"><![CDATA[biomasa microbiana]]></kwd>
<kwd lng="es"><![CDATA[emisión de CO2]]></kwd>
<kwd lng="es"><![CDATA[nitrógeno disponible]]></kwd>
</kwd-group>
</article-meta>
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