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Application of x-ray computed tomography in the evaluation of soil porosity in soil management systems REA
Beraldo,José M. G.; Scannavino Junior,Francisco de A.; Cruvinel,Paulo E..
The study aimed to evaluate a methodology to quantify the porosity of the soil using computed tomography in areas under no-tillage, conventional tillage and native forest. Three soil management systems were selected for the study: forest, conventional tillage and no-tillage. In each soil management system, undisturbed soil samples were collected in the surface layer (0.0 to 0.10 m). The tomographic images were obtained using a X-ray microtomography. After obtaining the images, they were processed, and a methodology was evaluated for image conversion into numerical values. The statistical method which provided the greatest accuracy was the percentile method. The methodology used to analyze the tomographic image allowed quantifying the porosity of the soil...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Precision farming; Image processing; X-ray microtomography; Macroporosity.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600012
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Beans cultivation and water regime on soil physical attributes CIGR Journal
Domingues, Rafael; Pereira, André Belmont; Pires, Luiz Fernando; Schiebelbein, Luis Miguel; Barbosa, Eduardo Augusto Agnellos; Auler, André Carlos.
Beans crop is an agricultural staple largely consumed in Brazil because it is part of the basic food of the population. Such a crop is usually grown by small growers and turns out to be of a great social and economical importance. The aim of the current manuscript was to scrutinize the effect of soil water status on its physical attributes, such as bulk density, total porosity, macroporosity, microporosity, hydraulic conductivity under protected environment conditions on beans crop (Phaseolus vulgaris L.). The effect of the soil physical attributes on the biological response of the plants was also investigated. The experiment was installed in March of 2016 in a greenhouse. The experimental design was completely randomized in a factorial scheme with four...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agronomy; Agrometeorology; Soil Physics; Irrigation Science Phaseolus vulgaris L; Hydraulic conductivity; Soil moisture; Macroporosity; Microporosity; Bulk density.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4585
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