Gamma-ray computed tomography to evaluate changes in the structure of a clayey soil due to agricultural traffic - doi: 10.4025/actasciagron.v33i3.4727

Luiz Fernando Pires

doi:10.4025/actasciagron.v33i3.4727

Gamma-ray computed tomography to evaluate changes in the structure of a clayey soil due to agricultural traffic - doi: 10.4025/actasciagron.v33i3.4727

Authors

Luiz Fernando Pires Universidade Estadual de Ponta Grossa Author

DOI:

https://doi.org/10.4025/actasciagron.v33i3.4727

Keywords:

gamma-ray attenuation, soil bulk density, soil porosity, image analysis, soil physics

Abstract

A first generation gamma-ray computed tomography (CT) equipped with a ¹³⁷Cs source was used to investigate changes in soil structure due to agricultural machinery traffic. Core samples with volume of 55 cm³ were collected at the surface (0-10 cm) of a Brazilian clayey soil. Significant alterations in soil structure occurred after two passages of tractor wheels, with important decreases in soil porosity. CT data allowed a continuous analysis of soil bulk density and also soil porosity distribution for 1.25 and 1.20 mm layers, which cannot be provided by traditional methods commonly used in soil physics.

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Author Biography

Luiz Fernando Pires, Universidade Estadual de Ponta Grossa

Professor Adjunto Departamento de Física Universidade Estadual de Ponta Grossa Ãreas de Atuação: Física dos Solos e Aplicação de Técnicas Nucleares em Física dos Solos

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Published

2011-04-11

Issue

Vol. 33 No. 3 (2011)

Section

Agricultural Engineering

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How to Cite

Pires, L. F. (2011). Gamma-ray computed tomography to evaluate changes in the structure of a clayey soil due to agricultural traffic - doi: 10.4025/actasciagron.v33i3.4727. Acta Scientiarum. Agronomy, 33(3), 411-416. https://doi.org/10.4025/actasciagron.v33i3.4727