Isolation, Identification and Evaluation of Bacterial Antagonists against Botrytis elliptica on Lily

Of the 700 micro-organisms isolated from lily plants and screened by dual and concomitant cultures, 10 isolates (B99, B111, B128, B131, B171, B190, B196, B203, B501 and BS) had antagonistic e€ects against Botrytis elliptica on three lily cultivars in greenhouse trials. Using the Biolog system, isolates B99 and B111 were identi®ed as Burkholderia gladioli, and B128 and B190 as Bacillus amyloliquefaciens. In the ®eld, B. gladioli B111, B. amyloliquefaciens B128, B190 or 100 p.p.m. ¯usilaz- ole e€ectively controlled the occurrence of lily grey mould (signi®cance, Pˆ0.05).