Biological control of fire blight.
This chapter reviews the work that has brought biological control of fire blight (Erwinia amylovora) from research laboratories to practical use in commercial pear and apple orchards. The discussion emphasizes biological interaction occurring at the population (orchard) level, and is biased towards antagonist strains that are commercially available or are nearing commercial availability in the USA. These strains include Pseudomonas fluorescens strain A506 and Erwinia herbicola (syn. Pantoea agglomerans) strain C9-1, which are representative of the two genera of Gram negative bacteria that have been investigated in the majority of published research on biological control of fire blight.