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| Magalhães,Wellington de Azambuja; Freddi,Onã da Silva; Lange,Anderson; Wruck,Flávio Jesus; Silva,Wininton Mendes da; Soares,Matheus Bortolanza. |
| Abstract: The objective of this work was to compare the structural quality and water retention curve of a Haplustox under single, double, and triple “paricá” (Ochroma pyramidale) lines in an integrated production system at 50 months of implantation. Soil was collected from five sampling points considering the distances from the tree lines. Undisturbed samples were collected from the 0.00-0.10 and 0.10-0.20-m layers in order to assess porosity, density, soil penetration resistance, soil water retention curve, and the “S” index. The forest arrangement based on three paricá lines promoted better soil physical conditions than the system using single lines. The main changes were recorded in the 0.10-0.20-m layer, with increased microporosity and decreased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ochroma pyramidale; ICLF; Physical quality of the soil; Retention curve; Water in the soil. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300351 |
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| Siqueira,Tirzah M.; Louzada,José A. S.; Pedrollo,Olavo C.; Castro,Nilza M. dos R.; Oliveira,Marquis H. C. de. |
| ABSTRACT The processes of water flow and water storage in the soil are directly associated with its hydraulic properties, which may vary significantly in space. Therefore, this study aimed to perform a spatial analysis of saturated hydraulic conductivity and the parameters of the soil water retention curve in the Donato basin, located in the municipality of Pejuçara, in the northwest region of the state of Rio Grande do Sul, Brazil, with geographic coordinates between 28º 25’ 34” S and 53º 40’ 30” W, and 28º 24’ 50” S and 53º 41’ 30” W, 590 m of altitude. Undisturbed soil samples (total of 55) were collected from August to November of 2012. The results have demonstrated larger variability for hydraulic conductivity and for the parameter α of the retention... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saturated hydraulic conductivity; Retention curve; Soil heterogeneity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000900669 |
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