<?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>S0871-018X2022000300551</article-id>
<article-id pub-id-type="doi">10.19084/rca.28536</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Efeito de condicionadores à base de bagaço de azeitona na estabilidade da agregação do solo: resultados preliminares de ensaio à micro-escala]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of olive-pomace based conditioners on soil aggregation stability: preliminary results from a micro-scale experiment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Royer]]></surname>
<given-names><![CDATA[Ana Caroline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silvestre]]></surname>
<given-names><![CDATA[Laura Martins]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Figueiredo]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Figueiredo]]></surname>
<given-names><![CDATA[Tomás de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baldo]]></surname>
<given-names><![CDATA[Maria Cleide]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fonseca]]></surname>
<given-names><![CDATA[Felícia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Zulimar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico de Bragança Centro de Investigação de Montanha Campus de Santa Apolónia]]></institution>
<addr-line><![CDATA[Bragança ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade da Coruña Grupo AQUATERRA Centro de Investigacións Científicas Avanzadas]]></institution>
<addr-line><![CDATA[A Coruña ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade Tecnológica Federal do Paraná  ]]></institution>
<addr-line><![CDATA[Paraná ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Laboratorio Colaborativo Montanhas de Investigação Ambiente de Montanha e Gestão de Ecossistemas ]]></institution>
<addr-line><![CDATA[Bragança ]]></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>551</fpage>
<lpage>560</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0871-018X2022000300551&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0871-018X2022000300551&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0871-018X2022000300551&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A aplicação de condicionadores ao solo visa o reforço da estabilidade da agregação (EA) e da sua resistência à erosão. O bagaço de azeitona (BA) húmido, proveniente da produção de azeite em duas fases, pode ser utilizado na compostagem e obtenção de condicionadores orgânicos (CBA). O trabalho tem como objetivo apresentar resultados de ensaio experimental realizado para avaliar a influência de CBA na EA. O ensaio comportou dois solos de potencialmente distinto grau de agregação (1, franco-limoso; 2, franco-argiloso), nos quais se aplicaram três CBA, em três doses. Amostras de agregados (1-2 mm) foram misturadas com condicionador moído (&lt;0,75 mm), submetidas a ciclos diários de humedecimento e secagem, e coletadas em 5 momentos ao longo do período experimental de 30 dias. A EA foi determinada por agitação e crivagem em húmido. Confirmou-se a hipótese de o solo 2 possuir EA significativamente superior à do solo 1. Neste, a adição dos condicionadores aumentou significativamente a proporção de agregados estáveis relativamente ao solo original, em todas as dosagens, o que não se verificou no solo 2. A incorporação de CBA em solos cultivados com olival, contribuindo para a economia circular, melhora a proteção do solo pelo incremento de agregados estáveis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The application of soil conditioners aims to reinforce aggregate stability (AS) and soil resistance to erosion. The wet olive pomace (OP), from olive oil production in two phases, can be used in composting and obtaining organic conditioners (OPC). The objective of this work is to present the results of an experiment carried out to evaluate the influence of OPC on AS. The experiment involved two soils of potentially different degrees of aggregation (1, silt loam; 2, clay loam), in which three OPC were applied, in three doses. Aggregate samples (1-2 mm) were mixed with conditioner (&lt;0.75 mm), subjected to daily cycles of wetting and drying, and collected at 5 moments along the 30-day experimental period. AS was determined by shaking and wet sieving. The hypothesis that soil 2 has a significantly higher AS than soil 1 was confirmed. In this, the addition of conditioners significantly increased the proportion of stable aggregates as compared to the original soil, at all dosages, which was not observed in soil 2. The incorporation of OPC in soils cultivated with olive groves, contributing to the circular economy, improves soil protection by increasing stable aggregates.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[agregados estáveis em água]]></kwd>
<kwd lng="pt"><![CDATA[estrutura do solo]]></kwd>
<kwd lng="pt"><![CDATA[compostagem]]></kwd>
<kwd lng="pt"><![CDATA[bagaço de azeitona húmido]]></kwd>
<kwd lng="en"><![CDATA[water-stable aggregates]]></kwd>
<kwd lng="en"><![CDATA[soil structure]]></kwd>
<kwd lng="en"><![CDATA[composting]]></kwd>
<kwd lng="en"><![CDATA[wet olive pomace]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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