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- W1979492684 abstract "For determining the soil attributes of water retention up to –10 kPa, including macroporosity and microporosity, the sand tension table has been proposed as a low-cost and high-performance alternative to Buchner funnels. This study demonstrates procedures for the installation, calibration and validation of a tension table built with inexpensive, easily purchased materials. We collected 14 oxisol samples with preserved structure to evaluate the efficiency of the constructed tension table as compared to Buchner funnels for determining the water content at potentials of –2, –4 and –6 kPa. No significant differences were observed for the porosity obtained using the tension table compared to that observed using the suction unit. RESUMO: Para determinacao dos atributos de retencao de agua no solo ate o potencial matricial de –10 kPa, como a macroporosidade e a microporosidade, tem sido sugerido o uso da mesa de tensao de areia, que se apresenta como uma alternativa de baixo custo e, sobretudo, de alto rendimento de trabalho em relacao aos Funis de Buchner. O objetivo deste trabalho foi demonstrar os procedimentos para montagem, calibracao e validacao de uma mesa de tensao construida com materiais de baixo custo e facil aquisicao. Foram coletadas 14 amostras indeformadas de um Latossolo Vermelho, para avaliar a eficiencia da mesa de tensao construida em relacao aos Funis de Buchner, na determinacao dos conteudos de agua nos potenciais de –2, –4 e –6 kPa. Nao foram encontradas diferencas significativas para porosidade, obtida na mesa de tensao, quando comparada a unidade de succao. Construction and performance of a simplified tension table for the determination of soil physicohydric attributes Construcao e desempenho de mesa de tensao simplificada para determinacao de atributos fisicohidricos de solos Petrus Hubertus Caspar Rosa Peters1 Bruno Montoani Silva1* Geraldo Cesar de Oliveira1 Joao Jose da Silva Junior2 Erika Andressa da Silva1 Samara Martins Barbosa1 1Universidade Federal de Lavras – UFLA, Departamento de Ciencia do Solo, Campus universitario, s/n, CP 3037, 37200-000, Lavras, MG, Brasil 2Universidade Federal de Lavras – UFLA, Departamento de Engenharia, Campus universitario, s/n, CP 3037, 37200-000, Lavras, MG, Brasil Corresponding Author: *E-mail: montoani@gmail.com" @default.
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- W1979492684 date "2014-01-01" @default.
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- W1979492684 title "Construction and performance of a simplified tension table for the determination of soil physicohydric attributes" @default.
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- W1979492684 doi "https://doi.org/10.4322/rca.2013.072" @default.
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