The objective of research was to analyze the "Osmose CCB" preservative efficiency to improve the wood Prosopis juliflora (Sw) D.C. resistance to Postia placenta fungus. In order to meet the objectives proposed, round pieces of P. juliflora were treated by sap displaced method in 1; 2 and 3% of active ingredients of CCB solutions, by 3, 6, 9, 12 and 15 days. Wood disks were obtained at three positions (50 cm from the base, middle and top) of the treated pieces. CCB penetration and retention were analyzed at these positions, as well as the resistance to P. placenta fungus (accelerated laboratory test decay) It was found better penetration and retention in pieces submitted to 2% of CCB solutions. The CCB penetration and retention, as well as the resistance of treated wood, in general, decreased from base to top of pieces. The preservative treatment conferred high-level resistance against P. placenta fungus to P. juliflora pieces. This has not occurred only for samples from the top (1% CCB and 15-day treatment; 2% and 9 days; 3% and 3, 12 and 15 days) and from the middle of pieces (3% CCB and 3 and 12-day treatment), which were classified as resistant.
Prosopis juliflora; preservative treatment; CCB; fungus; biological assays
