ORNAMENTAL HOSTS OF ERWINIA AMYLOVORA AND THE EFFECT OF THE FIRE BLIGHT CONTROL POLICY IN THE NETHERLANDS

M. van Teylingen
Since the introduction of fire blight, caused by Erwinia amylovora (Burrill) Winslow et al., in The Netherlands the Plant Protection Service (PPS) has been responsible for the control of the disease. Legislation allows PPS to take the measures required such as uprooting diseased plants, prohibition of planting very susceptible host plants and flowering prohibition for hawthorn. Due to the efforts made the incidence of fire blight infections has decreased by more than 90%. Where possible the identity was confirmed of ornamental host plants that were found infected. Up till now a total of 135 different ornamental plants have been registered in this way. The most commonly infected ornamental host plants are species of Crataegus and Cotoneaster. Experts have indicated how often species and varieties, which were found to be hosts, are used in nurseries, private gardens, parks and landscaping in The Netherlands. This indication is expressed as a number that gives an occurrence rate for these plants.
The combination of the number of infections in a particular host and the occurrence rate may give an indication of the susceptibility of these plants to natural infection under field conditions.
van Teylingen, M. (2002). ORNAMENTAL HOSTS OF ERWINIA AMYLOVORA AND THE EFFECT OF THE FIRE BLIGHT CONTROL POLICY IN THE NETHERLANDS. Acta Hortic. 590, 81-87
DOI: 10.17660/ActaHortic.2002.590.9
https://doi.org/10.17660/ActaHortic.2002.590.9
Measures, natural infection, susceptibility, host list, Crataegus, Cotoneaster.
English

Acta Horticulturae