| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
Planosol soil sample size for computerized tomography measurement of physical parameters
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| Autores: |
Pedrotti,Alceu
Pauletto,Eloy Antonio
Crestana,Silvio
Cruvinel,Paulo Estevão
Vaz,Carlos Manoel Pedro
Naime,João de Mendonça
Silva,Alvaro Macedo da
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| Data: |
2003-12-01
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| Ano: |
2003
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| Palavras-chave: |
Lowland
Albaqualf
Bulk density
Compaction
Soil moisture
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| Resumo: |
Computerized tomography (CT) is an important tool in Soil Science for noninvasive measurement of density and water content of soil samples. This work aims to describe the aspects of sample size adequacy for Planosol (Albaqualf) and to evaluate procedures for statistical analysis, using a CT scanner with a 241Am source. Density errors attributed to the equipment are 0.051 and 0.046 Mg m-3 for horizons A and B, respectively. The theoretical value for sample thickness for the Planosol, using this equipment, is 4.0 cm for the horizons A and B. The ideal thickness of samples is approximately 6.0 cm, being smaller for samples of the horizon B in relation to A. Alternatives for the improvement of the efficiency analysis and the reliability of the results obtained by CT are also discussed, and indicate good precision and adaptability of the application of this technology in Planosol (Albaqualf) studies.
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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=S0103-90162003000400019
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/S0103-90162003000400019
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.60 n.4 2003
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| Direitos: |
info:eu-repo/semantics/openAccess
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