Isolates of rhizobacteria that induced both rooting and growth of eucalyptus clones were previously selected. To assist developing a biological product based on those isolates, the compatibility among them and the effect of mixture of isolates were evaluated. The compatibility among rhizobacteria isolates was assessed by antibiograms in both Kado & Heskett and King B culture media, whereas the effect of isolate mixtures was evaluated by applying the isolates, either alone or mixed but always in the same proportions, in rooting substrate. No antagonism between isolates was observed in 64% of the possible combinations of two isolates. Isolates VC2 and CIIb were the most compatible. In general, it was observed no synergistic interaction in mixture of compatible isolates, as well as no efficiency reduction in mixture of incompatible isolates.
Eucalyptus; PGPR; biological; synergy
