Abstract
The research aimed to evaluate the efficiency of salt solutions (sodium chloride, lithium chloride, sodium carbonate, magnesium sulfate, zinc sulfate, and cupric sulphate = copper sulphate II) impregnated in the woods of Corymbia torelliana and Eucalyptus cloeziana on biological resistance to fungy of brown rot ( Postia placenta ) under laboratory conditions. From each species were taken samples of 2.0 x 2.0 x 3.0 cm (tangential x radial x longitudinal), over the large planks in the heartwood region on base-top direction. The samples were impregnated with 5% concentration of solutions and submitted for 16 weeks to the Postia placenta fungy under laboratory conditions. The wood of Eucalyptus cloeziana was more resistant to decay than Corymbia torelliana , both impregnated with salt solutions as not impregnated (natural) . The treatments with saline solutions were satisfactory as regards resistance of wood degradation, being classified as very resistant, serving as a parameter for the evaluation of the wood, the xylophagous tested fungy.
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