Biological Control of Rhizopus Rot of Peach withEnterobacter cloacae

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Abstract
Enterobacter cloacae (isolate D-3) delayed the onset and reduced the development of rot in artificially wounded peaches inoculated with Rhizopus stolonifer. Rhizopus infection was completely inhibited in 70% of fruit up to 5 days after inoculation. The effectiveness of E. cloacae was related to relative inocula concentrations of the pathogen and antagonist. Fruit firmness affected Rhizopus infection, but not E. cloacae effectiveness in controlling Rhizopus rot. Washed cells of E. cloacae were more effective than cells applied with the culture medium in which they grew. No compounds toxic to Rhizopus were detected in culture filtrates of E. cloacae.