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- Title
Eficiência de preservantes fungicidas em madeiras de duas espécies florestais submetidas à deterioração por fungo.
- Authors
GALLIO, Ezequiel; Alberto GATTO, Darci; LAZAROTTO, Marília; BELTRAME, Rafael
- Abstract
The objective of this study was to evaluate the efficiency of fungicide products in the Eucalyptus dunnii and Pinus elliottii wood preservation. For this, 2.5 x 2.5 x 0.9 cm (tangential x radial x longitudinal) specimens were impregnated with chromated copper borate (CCB), synthetic pyrethroids and carbamates (PSC), and copper chelate and carbamates(QCC) at concentrations of 2%, 4% and 6%, by vacuum-pressure process. It was evaluated the mass loss, and variation in Janka hardness and moisture content because the deterioration caused by the white rot fungus Ganoderma applanatum. The mass loss was 4.6% for Eucalyptus dunnii and 11.9% for Pinus elliottii. The deterioration increased the moisture content and reduced the hardness. For both species, a high and directly proportional and significant correlation was observed for mass loss and moisture content. However, the relationship between mass loss and hardness was inversely proportional to both species, being high and significant for Eucalyptus dunnii, and not significant for Pinus elliottii. It was concluded that the main active principle in relation to the others was the PSC, with concentration of 6% and that the mass loss influenced the other properties.
- Publication
Nativa, 2017, Vol 5, Issue 6, p434
- ISSN
2318-7670
- Publication type
Article
- DOI
10.5935/2318-7670.v05n06a09