<?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>2011-2173</journal-id>
<journal-title><![CDATA[Revista Colombiana de Ciencias Hortícolas]]></journal-title>
<abbrev-journal-title><![CDATA[rev.colomb.cienc.hortic.]]></abbrev-journal-title>
<issn>2011-2173</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Colombiana de Ciencias Hotícolas, Universidad Pedagógica y Tecnológica de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2011-21732017000100105</article-id>
<article-id pub-id-type="doi">10.17584/rcch.2017v11i1.6144</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Atributos físicos do solo em cultivo de cebola sob sistemas de plantio direto e preparo convencional]]></article-title>
<article-title xml:lang="en"><![CDATA[Soil physical attributes of onion cultivation under no-tillage and conventional tillage systems]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[LOSS]]></surname>
<given-names><![CDATA[ARCÂNGELO]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[JUNIOR]]></surname>
<given-names><![CDATA[ELANO DOS SANTOS]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[SCHMITZ]]></surname>
<given-names><![CDATA[DANIELA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[VEIGA]]></surname>
<given-names><![CDATA[MILTON DA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[KURTZ]]></surname>
<given-names><![CDATA[CLAUDINEI]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[COMIN]]></surname>
<given-names><![CDATA[JUCINEI JOSÉ]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal de Santa Catarina Programa de Pós-graduação em Agroecossistemas Departamento de Engenharia Rural]]></institution>
<addr-line><![CDATA[Florianópolis SC]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade do Oeste Catarinense  ]]></institution>
<addr-line><![CDATA[Campos Novos SC]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Pesquisador da Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina  ]]></institution>
<addr-line><![CDATA[Ituporanga SC]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<fpage>105</fpage>
<lpage>113</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S2011-21732017000100105&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S2011-21732017000100105&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S2011-21732017000100105&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO Este trabalho avaliou os atributos físicos do solo cultivado com cebola em sistemas plantio direto de hortaliças (SPDH) e preparo convencional (SPC) do solo, comparados à área de floresta secundária. Os tratamentos constituíram-se da utilização de plantas de cobertura, solteiras e consorciadas em SPDH agroecológico de cebola por seis anos, em blocos ao acaso com cinco repetições: vegetação espontânea, 100% aveia; 100% centeio; 100% nabo forrageiro; consórcio de nabo forrageiro (14%) + centeio (86%); consórcio de nabo forrageiro (14%) + aveia (86%). Adicionalmente, foram avaliadas duas áreas, uma sob SPC com cultivo de cebola por ±38 anos e outra de mata (floresta secundária, ±31 anos). Foram coletadas amostras indeformadas de solo nas profundidades de 0-5, 05-10, 10-15 e 15-20 cm, e nestas avaliaram-se a densidade do solo; porosidade total, macro e microporos; diâmetro médio ponderado e geométrico dos agregados, e umidade volumétrica. O SPDH aumentou os índices de agregação, a porosidade total e umidade volumétrica em comparação ao SPC, e equiparou-se aos índices de agregação em relação à área de mata. O nabo solteiro e consorciado com aveia e centeio melhorou os atributos físicos do solo em comparação com o SPC.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This study evaluated the physical attributes of Humic Cambisol cultivated with onion in a no-tillage system (NTSV) and conventional tillage system (CTS), as compared to a secondary forest. The treatments consisted of the use of cover crops, alone and intercropped in an agroecological onion NTSV for six years, in randomized blocks with five replications: spontaneous vegetation, 100% oats; 100% rye; 100% wild radish; intercropping of wild radish (14%) and rye (86%); and intercropping of wild radish (14%) and oats (86%). We also evaluated an onion cultivation area under CTS for ±38 years and a forest area (secondary forest for ±31 years). Undisturbed soil samples were collected at depths of 0-5, 05-10, 10-15 and 15-20 cm, and the soil density, total porosity, macro and micropores, mean geometric diameter and mean weighted diameter of aggregates, and volumetric moisture were evaluated. The NTSV increased the aggregation indices, total porosity and volumetric moisture in comparison to the CTS and the aggregation indices in relation to the forest area. Alone and intercropped wild radish with oats and rye improved the soil physical attributes as compared to the CTS.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[densidade do solo]]></kwd>
<kwd lng="pt"><![CDATA[porosidade]]></kwd>
<kwd lng="pt"><![CDATA[diâmetro médio geométrico]]></kwd>
<kwd lng="pt"><![CDATA[plantas de cobertura]]></kwd>
<kwd lng="pt"><![CDATA[estrutura do solo]]></kwd>
<kwd lng="en"><![CDATA[soil density]]></kwd>
<kwd lng="en"><![CDATA[porosity]]></kwd>
<kwd lng="en"><![CDATA[geometric mean diameter]]></kwd>
<kwd lng="en"><![CDATA[cover plants]]></kwd>
<kwd lng="en"><![CDATA[soil structure]]></kwd>
</kwd-group>
</article-meta>
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