Planosol soil sample size for computerized tomography measurement of physical parameters
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...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidade de São Paulo
2003-12-01
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| Series: | Scientia Agricola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400019&tlng=en |
| _version_ | 1798020208544186368 |
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| author | Alceu Pedrotti Eloy Antonio Pauletto Silvio Crestana Paulo Estevão Cruvinel Carlos Manoel Pedro Vaz João de Mendonça Naime Alvaro Macedo da Silva |
| author_facet | Alceu Pedrotti Eloy Antonio Pauletto Silvio Crestana Paulo Estevão Cruvinel Carlos Manoel Pedro Vaz João de Mendonça Naime Alvaro Macedo da Silva |
| author_sort | Alceu Pedrotti |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-11T16:53:51Z |
| format | Article |
| id | doaj.art-ee9b7a00d68b432d80ca03e628ccf092 |
| institution | Directory Open Access Journal |
| issn | 1678-992X |
| language | English |
| last_indexed | 2024-04-11T16:53:51Z |
| publishDate | 2003-12-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Scientia Agricola |
| spelling | doaj.art-ee9b7a00d68b432d80ca03e628ccf0922022-12-22T04:13:21ZengUniversidade de São PauloScientia Agricola1678-992X2003-12-01604735740Planosol soil sample size for computerized tomography measurement of physical parametersAlceu Pedrotti0Eloy Antonio Pauletto1Silvio Crestana2Paulo Estevão Cruvinel3Carlos Manoel Pedro Vaz4João de Mendonça Naime5Alvaro Macedo da Silva6Universidade Federal de SergipeUniversidade Federal de PelotasEmpresa Brasileira de Pesquisa AgropecuáriaEmpresa Brasileira de Pesquisa AgropecuáriaEmpresa Brasileira de Pesquisa AgropecuáriaEmpresa Brasileira de Pesquisa AgropecuáriaEmpresa Brasileira de Pesquisa AgropecuáriaComputerized 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400019&tlng=enlowlandalbaqualfbulk densitycompactionsoil moisture |
| spellingShingle | Alceu Pedrotti Eloy Antonio Pauletto Silvio Crestana Paulo Estevão Cruvinel Carlos Manoel Pedro Vaz João de Mendonça Naime Alvaro Macedo da Silva Planosol soil sample size for computerized tomography measurement of physical parameters Scientia Agricola lowland albaqualf bulk density compaction soil moisture |
| title | Planosol soil sample size for computerized tomography measurement of physical parameters |
| title_full | Planosol soil sample size for computerized tomography measurement of physical parameters |
| title_fullStr | Planosol soil sample size for computerized tomography measurement of physical parameters |
| title_full_unstemmed | Planosol soil sample size for computerized tomography measurement of physical parameters |
| title_short | Planosol soil sample size for computerized tomography measurement of physical parameters |
| title_sort | planosol soil sample size for computerized tomography measurement of physical parameters |
| topic | lowland albaqualf bulk density compaction soil moisture |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400019&tlng=en |
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