Pesquisa Agropecuária Tropical (Jan 2011)

ATRIBUTOS MICROBIOLÓGICOS, QUÍMICOS E FÍSICOS DE SOLO SOB DIFERENTES SISTEMAS DE MANEJO E CONDIÇÕES DE CERRADO MICROBIOLOGICAL, CHEMICAL AND PHYSICAL ATTRIBUTES OF SOIL UNDER DIFFERENT CROP SYSTEMS AND CERRADO CONDITIONS

  • Cezesmundo Ferreira Gomes,
  • Alessandra Mayumi Tokura Alovisi,
  • Fábio Martins Mercante,
  • Elaine Reis Pinheiro Lourente,
  • Adriano Soares Gasparini,
  • Cássio Miranda Nunes

DOI
https://doi.org/10.5216/pat.v41i1.8459
Journal volume & issue
Vol. 41, no. 1

Abstract

Read online

<p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">O objetivo deste trabalho foi avaliar o efeito do uso e manejo de solo sobre seus atributos qu&iacute;micos, f&iacute;sicos e microbiol&oacute;gicos. A pesquisa foi realizada no inverno de 2007 e ver&atilde;o de 2008, no Munic&iacute;pio de Dourados (MS), em Latossolo Vermelho distrof&eacute;rrico t&iacute;pico. Os dados foram analisados de acordo com delineamento experimental inteiramente casualizado, sendo coletadas 5 amostras compostas, que constitu&iacute;ram 5 repeti&ccedil;&otilde;es por sistema de manejo. Os sistemas de manejo estudados foram: &Aacute;rea 1: &aacute;rea destinada a reflorestamento; &Aacute;rea 2: sistema convencional de preparo do solo; &Aacute;rea 3: sistema de semeadura direta; &Aacute;rea 4: pastagem degradada; e &Aacute;rea 5: sistema natural (mata nativa). A avalia&ccedil;&atilde;o de um sistema de manejo, em seu primeiro ano de implanta&ccedil;&atilde;o, n&atilde;o foi suficiente para mensurar os impactos sobre atributos f&iacute;sicos e microbiol&oacute;gicos do solo. A substitui&ccedil;&atilde;o da vegeta&ccedil;&atilde;o nativa por sistemas de cultivo pode causar importantes altera&ccedil;&otilde;es nos atributos qu&iacute;micos do solo, j&aacute; no primeiro ano de implanta&ccedil;&atilde;o. Os atributos microbiol&oacute;gicos foram eficientes indicadores de altera&ccedil;&otilde;es nos atributos f&iacute;sicos, em fun&ccedil;&atilde;o do uso e manejo do solo. </span></span></span></p> <p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">PALAVRAS-CHAVE: Q<span style="color: #231f20;">ualidade do solo; carbono da biomassa microbiana; </span>pr&aacute;ticas de manejo.</span></span></span></p><p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">The aim of this research was to evaluate the effect of soil use and management on its chemical, physical and microbiological attributes. The research was carried out from the winter (2007) to the summer (2008), in Dourados, Mato Grosso do Sul State, Brazil, in a Distroferric Red Latossol. Data were analyzed as a complete randomized experimental design, with 5 collected samples that established 5 replications per management system. The management systems were: Area 1: area alloted to reforestation; Area 2: conventional soil tillage; Area 3: no-tillage; Area 4: degraded forage; and Area 5: natural system (native forest). The evaluation of a management system in its first year of implementation was not sufficient to evaluate the impacts on soil physical and microbiological attributes. The substitution of native vegetation by cultivation systems can cause important alterations on soil chemical attributes from the first year of implementation. Microbiological attributes were efficient indicators of alterations in physical attributes according to the soil use and management.</span></span></span></p> <p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">KEY-WORDS:<strong> </strong><span style="color: #231f20;">Soil quality; microbial biomass carbon; </span>management practices.</span></span></span></p> <p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY">&nbsp;</p>

Keywords