| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Pore network of an Inceptisol under different uses and relativized S-index as an indicator of soil physical quality
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| Autores: |
Assis Júnior,Raimundo Nonato de
Mota,Jaedson Cláudio Anunciato
Freire,Alcione Guimarães
Alencar,Thiago Leite de
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| Data: |
2016-09-01
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| Ano: |
2016
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| Palavras-chave: |
Blocked porosity
Irrigation management
Pore continuity
Soil management
Soil permeability to air
Srelative index
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| Resumo: |
Abstract The objective of this work was to evaluate soil porous media quality under different uses, as well as to propose a new index to monitor changes in its structure due to management: the Srelative index. An Inceptisol under irrigated banana cultivation and secondary forest, in the Brazilian Apodi Plateau, was evaluated at three soil layers (0.0-0.1, 0.1-0.2, and 0.2-0.3 m) as to: particle size, particle and bulk density, organic matter content, intrinsic permeability to air, and water retention curve. Total porosity, index for pore continuity (defined by the ratio between soil intrinsic permeability to air and aeration porosity), volume of blocked pores, and the S and Srelative indices were determined. The Srelative index was calculated as the ratio between S-index values from undisturbed and disturbed samples of the same soil (Sundisturbed/Sdisturbed). Under the studied conditions, the Srelative index is a good quantifier of the changes imposed by soil use and management. Soil cultivation maintains or improves the quality of the evaluated attributes, except for blocked porosity, when compared with the soil under native secondary forest with ten years of regeneration after agricultural use.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901575
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/s0100-204x2016000900057
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.51 n.9 2016
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| Direitos: |
info:eu-repo/semantics/openAccess
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