ABSTRACT
This work aimed to evaluate the resistance of bamboo species Bambusa vulgaris and Dendrocalamus giganteus, after being exposed to three methods of chemical preservative treatments against the action of Postia placentaand Polyporus fumosus fungi. The treatment methods employed were transpiration (integral and ruptured diaphragm), long-term immersion and Boucherie modified. The bamboo stems were transformed into culms of 2.0 m long and treated in a solution of 1 or 3% active ingredient (a.i.) of a commercial product based on copper, chromium and boron (CCB). In the methods by transpiration and the long-term immersion, culms were exposed in solutions for periods of 5, 10 or 15 days, while in the modified Boucherie method there was no segregation of treatment between times of treatment. To assess the effectiveness of the treatments, Postia placenta and Polyporus fumosus fungi were employed. From the results obtained it was observed that, on average, for both species of bamboo and tested methods, the mass loss of samples of bamboo, after undergoing the fungal attack, was low, varying from 2.44 to 14.26%.
Keywords:
Dendrocalamus giganteus
;
Bambusa vulgaris
; Preservative treatment