<?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>0871-018X</journal-id>
<journal-title><![CDATA[Revista de Ciências Agrárias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. de Ciências Agrárias]]></abbrev-journal-title>
<issn>0871-018X</issn>
<publisher>
<publisher-name><![CDATA[Sociedade de Ciências Agrárias de Portugal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0871-018X2022000300421</article-id>
<article-id pub-id-type="doi">10.19084/rca.28488</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effects of compost on lettuce (Lactuca sativa) yield and soil biochemical properties]]></article-title>
<article-title xml:lang="es"><![CDATA[Efectos de compost sobre el rendimiento de lechuga y propiedades bioquímicas del suelo]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-López]]></surname>
<given-names><![CDATA[Ana M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Horta]]></surname>
<given-names><![CDATA[Carmo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Seville Dpt. Agronomy ]]></institution>
<addr-line><![CDATA[Seville ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Polytechnic Institute of Castelo Branco School of Agriculture ]]></institution>
<addr-line><![CDATA[Castelo Branco ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Polytechnic Institute of Castelo Branco Research Centre for Natural Resources, Environment and Society ]]></institution>
<addr-line><![CDATA[Castelo Branco ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>45</volume>
<numero>4</numero>
<fpage>421</fpage>
<lpage>430</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0871-018X2022000300421&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0871-018X2022000300421&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0871-018X2022000300421&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Amended soils with compost produced from livestock effluents can increase soil fertility and crop productivity. The aim of this work was to assess the effect of the fertilization with a compost on the soil enzymatic activity and yield of a lettuce crop. An experiment was carried out under field conditions with the following treatments: control without fertilization; mineral N fertilization with 85 kg N ha&#8722;1 (Ni85); fertilization with compost in pellets (CP170N) at N dose of 170 kg ha&#8722;1; fertilization with CP at N dose of 85 kg ha&#8722;1 together with mineral N at 42.5 kg ha-1(CP85N+Ni42.5). The fertilization increased the lettuce biomass compared with the control treatment; the pelletized compost showed similar yields (P &gt;0.05) than those obtained with the mineral N fertilization. The acid phosphatase and the total microbial biomass increased significantly in the soils fertilized with CP170N treatment. However, the alkaline phosphatase and (-glucosidase were similar between the treatments. The acidic pH of the soil may have decreased the alkaline phosphatase activity. The application of the pelletized compost at a dose of 170 kg N ha-1 showed the best agronomic behavior regarding the lettuce yield, the soil microbial biomass and the acid phosphatase activity.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Suelos enmendados con compost producido a partir de efluentes de ganado pueden aumentar la fertilidad del suelo y la productividad de los cultivos. El objetivo de este trabajo fue evaluar el efecto de la fertilización con compost sobre la actividad enzimática del suelo y el rendimiento de un cultivo de lechuga. Se realizó un experimento en condiciones de campo con los siguientes tratamientos: testigo sin fertilización; fertilización mineral N con 85 kg N ha&#8722;1 (Ni85); fertilización con compost en pellets (CP170N) a dosis de N de 170 kg ha&#8722;1; fertilización con CP a una dosis de N de 85 kg ha&#8722;1 junto con N mineral a 42.5 kg ha-1 (CP85N+Ni42.5). La fertilización incrementó la biomasa de lechuga en comparación con el tratamiento testigo; el compost peletizado mostró rendimientos similares (P &gt;0.05) a los obtenidos con la fertilización con N mineral. La fosfatasa ácida y la biomasa microbiana total aumentaron significativamente en los suelos fertilizados con el tratamiento CP170N. Sin embargo, la fosfatasa alcalina y la &#946;-glucosidasa fueron similares entre los tratamientos. El pH ácido del suelo puede haber disminuido la fosfatasa alcalina. La aplicación de compost peletizado a la dosis de 170 kg N ha-1 mostró el mejor comportamiento agronómico en cuanto al rendimiento de la lechuga, la biomasa microbiana del suelo y la actividad de la fosfatasa ácida.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[acid phosphatase]]></kwd>
<kwd lng="en"><![CDATA[pelletized compost]]></kwd>
<kwd lng="en"><![CDATA[soil enzimatic activities]]></kwd>
<kwd lng="en"><![CDATA[vegetable crops]]></kwd>
<kwd lng="es"><![CDATA[fosfatasa ácida]]></kwd>
<kwd lng="es"><![CDATA[compost peletizado]]></kwd>
<kwd lng="es"><![CDATA[actividades enzimáticas]]></kwd>
<kwd lng="es"><![CDATA[hortalizas]]></kwd>
</kwd-group>
</article-meta>
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