ISHS Acta Horticulturae 273: V International Workshop on Fireblight
RISK OF FIRE BLIGHT INFECTION ASSOCIATED WITH PRUNING OF PEAR TREES |
| Author: | P. Lecomte |
| Abstract:
Infection risks of fire blight on branches pruned with contaminated shears were investigated. Experiments in the field with “naturally” infected shears showed a nil infection occurrence during dormant period and variable results during the growing season. In order to determine more precisely infection risks during dormant period, weekly artificial inoculations were done by dipping the shears in a bacterial suspension. Different cultivars, two bacterial strains, CFBP 1430 and CFBP 2045, were used. Shoots showing infections after pruning were recorded in late April. Results indicated that as far as prevention of fire blight spreading is concerned, the best period to prune trees is full dormant period (before March, in Dax area). | |
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