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	Provedor de dados Chilean J. Agric. Res. (1) Rev. Bras. Ciênc. Solo (1) AGRIAMBI (1) Autor Balbuena,Roberto (3) Casado,Juan (1) Cholaky,Carmen (1) Cisneros,José M (1) Claverie,Jorge (1) Filgueira,Roberto Raúl (1) Jorajuría,Daniel (1) Lozano,Luis Alberto (1) Manghi,Eduardo (1) Ressia,Juan Manuel (1) Soracco,Carlos Germán (1) Terminiello,Antonino (1) Mais... Palavra-chave Agricultural engineering (1) Bulk density (1) Chisel plow (1) Compaction (1) Conventional tillage (1) Densidad aparente (1) Effective porosity (1) No tillage (1) Resistencia a la penetración (1) Tension disc infiltrometer (1) Tránsito (1) Water content (1) Winged scarifier (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Journal article (1) Ano 2012 (1) 2010 (1) 2000 (1) País Brazil (2) Chile (1) Idioma Inglês (2) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Field Performance of a Winged Scarifier as a Function of Soil Compaction and Water Content Chilean J. Agric. Res. Cholaky,Carmen; Cisneros,José M; Balbuena,Roberto. Initial soil conditions, operational aspects, and tool shape affect the efficiency of soil decompaction. The objective of this study was to evaluate the performance of a winged scarifier as a function of soil compaction and edaphic water content. The experiment was carried out in a typical Hapludoll. Treatments considered two soil compaction levels: high (HC) and low compaction (LC); and three soil water contents: wet (WS), humid (HS), and dry (DS) with 9, 14, and 19% gravimetric water content, respectively. A split-plot randomized block design was applied. Tractive effort, disturbed area, tillage depth, specific resistance, and power were evaluated. Results showed that tractive effort was 17% greater in HC than LC, and in both cases HS was greater than WS... Tipo: Journal article Palavras-chave: Agricultural engineering; Winged scarifier; Bulk density; Water content; Compaction. Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100016 Contribution of macroporosity to water flux of a soil under different tillage systems Rev. Bras. Ciênc. Solo Soracco,Carlos Germán; Lozano,Luis Alberto; Balbuena,Roberto; Ressia,Juan Manuel; Filgueira,Roberto Raúl. In view of the importance of the macroporosity for the water transport properties of soils, its quantitative assessment is a challenging task. Measurements of hydraulic conductivity (K) at different soil water tensions and the quantification of water-conducting macropores (θM) of a soil under different tillage systems could help understand the effects on the soil porous system and related hydraulic properties. The purpose of this study was to assess the effects of Conventional Tillage (CT), Chisel Plow (CP) and No Tillage (NT) on θM and on K; and to quantify the contribution of macroporosity to total water flux in a loam soil. A tension disc infiltrometer was used at two soil water pressure heads (-5 cm, and 0) to infer θM and K, during fallow.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Tension disc infiltrometer; No tillage; Chisel plow; Conventional tillage; Effective porosity. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400009 Compactación inducida por el tráfico de máquinas en suelo forestal AGRIAMBI Claverie,Jorge; Balbuena,Roberto; Terminiello,Antonino; Casado,Juan; Manghi,Eduardo; Jorajuría,Daniel. Se realizaron ensayos en campo para evaluar los efectos del tráfico de cosecha y extracción sobre las propiedades físicas del suelo en una plantación de álamos (Populus sp.). Fueron evaluadas: a) zonas sin tránsito vehicular y b) zonas transitadas por maquinaria de cosecha y extracción. Para ambas situaciones se efectuaron mediciones de resistencia a la penetración, humedad y densidad aparente. La resistencia a la penetración en las zonas transitadas resultó significativamente mayor hasta los 150 mm de profundidad, siendo el efecto del tránsito detectable hasta los 380 mm. A partir de los 150 mm ambos tratamientos superaron valores de 1,5 MPa, que reducirían el crecimiento radicular. La densidad en los sectores con tránsito resultó significativamente... Tipo: Info:eu-repo/semantics/article Palavras-chave: Tránsito; Densidad aparente; Resistencia a la penetración. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662000000200026 Registros recuperados: 3 Primeira ... 1 ... Última

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