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  <titleInfo>
    <title>Shear strength and preconsolidation Red Yellow Acrisol from Northeast semiarid under conventional and no-tillage management</title>
  </titleInfo>
  <name type="personal">
    <namePart>Nascimento, Elivânia Maria Sousa</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Amorim, Marcelo Queiroz</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Araújo, Karla Lúcia Batista</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Cavalcante, Thereza Rhayane Barbosa</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Chioderoli, Carlos Alessandro</namePart>
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      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
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  <genre authority="marc">periodical</genre>
  <genre authority="marc">abstract or summary</genre>
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  <abstract>


ABSTRACT:    Currently the bigger limitation of the agricultural production and the quality of the environment of the mechanized areas is the compaction. The objective of this work was to evaluate the shear strength and the preconsolidation of a Red yellow Acrisol soil of the northeast semiarid, under conventional and no-tillage management. The soil samples were subject to uniaxial compression test where static loads of 25, 50, 100, 200, 400 and 800 were applied  during  30  minutes.  The  tests  of  direct  shear  were  realized  with  applying  loads  of 50, 100 and 200 kPa. The results showed that the maximum deformation, independent of management system, occurred in the three first minutes, of the application of the load. The shear stress increased as far as the normal tension was applied to the soil. The conventional management  was  more  susceptible  to  pressures  applied  in  the  soil  when  compared  to  no-tillage system. 


KEYWORDS:   Machinery, Cohesion, Compaction</abstract>
  <abstract>


RESUMO:    Atualmente, um limitador da produção agrícola e da qualidade do solo das áreas mecanizadas é a compactação. O objetivo deste trabalho foi avaliar a preconsolidação e a resistência ao cisalhamento em Argissolo Vermelho amarelo do semiárido nordestino sob manejo convencional e plantio direto. As amostras de solo foram submetidas ao ensaio de compressão uniaxial utilizando cargas estáticas de 25, 50, 100, 200, 400 e 800 durante 30 minutos. Os ensaios de cisalhamento direto foram realizados aplicando-se cargas de 50, 100 e 200 kPa. Os resultados mostraram que a deformação máxima do solo, independente do  sistema  de  manejo,  ocorreu  nos  três  primeiros  minutos.  A  tensão  de  cisalhamento  aumentou  à  medida  que  a  tensão  normal  era  aplicada  ao  solo.  O  manejo  convencional  foi mais susceptível as pressões aplicadas no solo quando comparado ao plantio direto. 


PALAVRAS-CHAVE:   Máquinas agrícolas, Coesão, Compactação</abstract>
  <note>

Publicação online; 29 ref.; 4 illus.; Summaries (En, Pt)</note>
  <subject>
    <topic>PLANTIO DIRETO</topic>
  </subject>
  <subject>
    <topic>ANÁLISE DO SOLO</topic>
  </subject>
  <subject>
    <topic>MÁQUINA AGRÍCOLA</topic>
  </subject>
  <subject>
    <topic>PRENSAGEM</topic>
  </subject>
  <subject>
    <topic>SISTEMA DE CULTIVO</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Revista de Ciências Agrárias (Brazil)</title>
    </titleInfo>
    <originInfo>
      <publisher>Belém-PA Faculdade de Ciências Agrárias do Pará 1999</publisher>
    </originInfo>
    <identifier>2024-6644</identifier>
    <identifier type="issn">1517-591X Impresso/Versão online ISSN 2177-8760</identifier>
    <identifier type="local">BR2025003021</identifier>
    <part>
      <text>v. 60(4) p. 322-327; (2017)</text>
    </part>
  </relatedItem>
  <identifier type="uri">https://ajaes.ufra.edu.br/index.php/ajaes/article/view/2501/1469</identifier>
  <location>
    <url>https://ajaes.ufra.edu.br/index.php/ajaes/article/view/2501/1469</url>
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  <recordInfo>
    <recordContentSource authority="marcorg">BR-BrBNA</recordContentSource>
    <recordCreationDate encoding="marc">250818</recordCreationDate>
    <recordChangeDate encoding="iso8601">20250818163634.0</recordChangeDate>
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