ISHS Acta Horticulturae 596: VIII International Symposium on Pear
FUNGAL AND BACTERIAL PESTS IN PEAR GROWING |
| Author: | T. Deckers |
| Keywords: | pear scab, brown spot, fire blight, blossom blight |
| Abstract:
Pear scab, caused by Venturia pyrina, is the most important fungal disease on pear trees. Conidiospore infections play a determining role in the disease cycle. In southern countries of the EU, Brown Spot caused by Stemphylium vesicarium is also a fungal disease on pear trees with increasing economic importance. For the bacterial diseases on pear trees fire blight infections caused by Erwinia amylovora can reduce pear production when large scale primary blossom infections occur. Movement of infected plant material is an important way for long distance spread of the fire blight bacterium. Blossom blight infections caused by Pseudomonas syringae can destroy the complete crop on young pear trees, when frost damages the tissue of the flower clusters on these trees. | |
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