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Planosol soil sample size for computerized tomography measurement of physical parameters

التفاصيل البيبلوغرافية
العنوان: Planosol soil sample size for computerized tomography measurement of physical parameters
المؤلفون: Alceu Pedrotti, Eloy Antonio Pauletto, Silvio Crestana, Paulo Estevão Cruvinel, Carlos Manoel Pedro Vaz, João de Mendonça Naime, Alvaro Macedo da Silva
المصدر: Scientia Agricola, Vol 60, Iss 4, Pp 735-740 (2003)
بيانات النشر: Universidade de São Paulo, 2003.
سنة النشر: 2003
المجموعة: LCC:Agriculture (General)
مصطلحات موضوعية: lowland, albaqualf, bulk density, compaction, soil moisture, Agriculture (General), S1-972
الوصف: 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.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
Spanish; Castilian
Portuguese
تدمد: 1678-992X
Relation: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400019&tlng=en; https://doaj.org/toc/1678-992X
URL الوصول: https://doaj.org/article/ee9b7a00d68b432d80ca03e628ccf092
رقم الأكسشن: edsdoj.9b7a00d68b432d80ca03e628ccf092
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:1678992X