Inhibition (%) of growth of S. rolfsii in presence of antagonistic bacteria (B. licheniformis EB 13, B. licheniformis CDB 47, Pseudomonas sp. CDB 35, Pseudomonas sp. CDB 36, Pseudomonas sp. BWB 21, Pseudomonas sp. BWB 36, Pseudomonas sp. BWB 40) on Kings B medium