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CHEMICAL CONTROL OF FIRE BLIGHT IN PEAR: APPLICATION OF PROHEXADIONE-CALCIUM, ACIBENZOLAR-S-METHYL, AND COPPER PREPARATIONS IN VITRO AND UNDER FIELD CONDITIONS

Article number
704_31
Pages
233 – 238
Language
English
Abstract
Systemic acquired resistance (SAR) inducers and dioxygenase-inhibitors represent an alternative approach for controlling fire blight.
Acibenzolar-S-methyl (ABM), prohexadione-Ca (ProCa) and trinexapac-ethyl (TrixE) were tested in vitro and under field conditions for their efficacy in reducing fire blight incidence and severity.
Under field conditions, these compounds significantly reduced (up to 40%) fire blight incidence.
Similarly, in vitro, resistance inducers slowed down the pathogen migration in both the xylem and the parenchyma.
In particular, the application of ProCa and TrixE resulted in a 50-60% reduction of pathogen migration inside the plant tissues.

Publication
X International Workshop on Fire Blight
Authors
F. Spinelli, C. Andreotti, E. Sabatini, G. Costa, G. Spada, L. Ponti, K. Geider
Keywords
Erwinia amylovora, resistance inducers, Pyrus communis
Full text
https://doi.org/10.17660/ActaHortic.2006.704.31
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