<?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>S0871-018X2022000300711</article-id>
<article-id pub-id-type="doi">10.19084/rca.28596</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Vermicompostagem de substratos com lamas de ETAR: efeitos em Eisenia fetida]]></article-title>
<article-title xml:lang="en"><![CDATA[Vermicomposting of substrates with sewage sludge: effects on Eisenia fetida]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonçalves]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coimbra]]></surname>
<given-names><![CDATA[Ana M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sousa]]></surname>
<given-names><![CDATA[João Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[Paula]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Roboredo]]></surname>
<given-names><![CDATA[Marta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade de Trás-os-Montes e Alto Douro  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade de Trás-os-Montes e Alto Douro Inov4Agro Centro de Investigação e de Tecnologias Agroambientais e Biológicas]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade de Trás-os-Montes e Alto Douro Centro de Química Vila Real ]]></institution>
<addr-line><![CDATA[ ]]></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>711</fpage>
<lpage>720</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0871-018X2022000300711&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0871-018X2022000300711&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0871-018X2022000300711&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A valorização das lamas de ETAR na agricultura como fonte de matéria orgânica e nutrientes tem vindo a ganhar relevo. Estes resíduos, produto do tratamento de águas residuais, podem ser melhorados através de bioprocessos como a vermicompostagem, ultrapassando limitações tais como a estabilidade da matéria orgânica e/ou presença de contaminantes. Com o objetivo de melhor compreender a viabilidade da vermicompostagem de lamas de ETAR efetuou-se um ensaio com substratos contendo proporções variáveis deste resíduo, de estrume de equino maturado e de casca de arroz. Aos diferentes substratos, sujeitos a um período de pré-compostagem, adicionaram-se minhocas adultas da espécie Eisenia fetida por um período de 31 dias. O efeito nas minhocas da exposição às diferentes misturas foi avaliado ao nível da mortalidade, crescimento e reprodução. Os resultados revelaram que substratos com propoções elevadas de lamas de ETAR são letais para as minhocas e que a exposição às lamas inibe a reprodução desta espécie. O pH, condutividade eléctrica e razão C/N foram as características dos substratos que sugerem um maior impacto nos resultados obtidos e a ter em principal consideração em estudos futuros.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The valorization of sewage sludge as a source of organic matter and nutrients in agriculture has been gaining importance. These residues, a product of wastewater treatment, can be improved through bioprocesses such as vermicomposting, overcoming limitations such as the stability of organic matter and/or the presence of contaminants. In order to better understand the viability of vermicomposting of sewage sludge, a trial was carried out with substrates containing varying proportions of this residue, of matured horse manure and of rice husk. Adult earthworms of the Eisenia fetida species were added to the different substrates, previously pre-composted for a period of 31 days. The effect of exposing the earthworms to the different mixtures was evaluated in terms of mortality, growth and reproduction. The results revealed that high amounts of sewage sludge are lethal to earthworms and exposure to the sludge inhibited this species reproduction. The pH, electrical conductivity and C/N ratio were the characteristics of the mixtures that suggest a greater impact on the results obtained and to be considered in future studies.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[vermicompostagem]]></kwd>
<kwd lng="pt"><![CDATA[lamas de ETAR]]></kwd>
<kwd lng="pt"><![CDATA[Eisenia fetida]]></kwd>
<kwd lng="en"><![CDATA[vermicomposting]]></kwd>
<kwd lng="en"><![CDATA[sewage sludge]]></kwd>
<kwd lng="en"><![CDATA[Eisenia fetida]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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