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Subject: PINO PONDEROSA ×

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  • Artículo de revista
    Caracterización y uso de biocombustibles elaborados con fines domésticos a partir de residuos forestales de Pinus ponderosa en Bariloche, Argentina
    El incremento poblacional en Bariloche, Patagonia Argentina, ha provocado el desarrollo de barrios que aún no cuentan con todos los servicios básicos. El servicio más crítico, como consecuencia del clima extremo de la zona, es la distribución de gas natural por red, que es el recurso preferido para la calefacción doméstica. Por otra parte, existen grandes extensiones de recursos madereros que carecen de manejos silviculturales, que han desarrollado enfermedades fitosanitarias, y constituyen potenciales focos de incendios. En este contexto resulta de interés analizar la elaboración de biocombustibles a partir de los residuos forestales, y que resulten apropiados para ser utilizados en equipos de calefacción domésticos, con sistemas de combustión más eficientes y limpios que los tradicionales.
    Andreassi, Leonardo-Douat, Guillermo-Salvare, Fernando-Capitanich, Agustín
    2022
  • Artículo de revista
    Root system architecture of Pinus ponderosa three decades after copper root pruning in a container nursery
    We revisited a Pinus ponderosa planting 32 years after it was established with one-year-old seedlings grown in copper-treated containers that modified their root systems. This technique was intended to promote more root egress after outplanting from the entire length of the root plug with a goal of providing greater stem stability. After excavating and digitizing the root systems of five treated and five non-treated plants, we observed that regardless of treatment, all trees initiated more roots and accumulated more root volume in apparent response to mechanical stresses invoked by wind and slope, with more roots occurring windward and downslope. Few differences were noted between treatments for root length and volume for either the cage or the entire root system. Trees treated with copper were taller (8%) with stouter taproots (less taper) and less root volume in the lower soil profile than control trees. Although the copper treatment may have induced short-term changes to root system architecture, the long-term, plastic response of this species to mechanical stresses, and the time duration involved, was more critical to the observed expression of traits.
    Dumroese, R. Kasten-Terzaghi, Mattia-Acevedo Tapia, Manuel-Lasserre, Bruno-Scippa, Gabriella S.-Scott Baggett, L.-Chiatante, Donato-Montagnoli, Antonio
    2022