Veon arboriculturalists encounter bacterial canker in ash trees during a Tree Risk Assessment survey in Co. Dublin.
The causal agent of the bacterial canker was Pseudomonas savastanoi pv. Fraxini, a particular pathovar which specifically infects ash trees. Infection typically enters through wounds or natural openings (lenticels) and is favoured by cool, wet conditions. The disease weakens trees, making them more vulnerable to other pathogens and environmental stress – potentially encircling stems and … Read more