D. Callu
In spite of the very important means dedicated to the disease detection and the fight against it (3.784.000,00 F. in 1982 in addition to the research, and the profession measures, etc….) the disease progression could not be limited in the regions concerned, especially because of the favourable climatic conditions: particularly in the North of France (35 nurseries), in Aquitaine (8 nurseries) and to a lesser extent the Alsace (only green spaces) from infection seats from the other side of the Rhine.

Also, parallel to these efforts of investigations in sound areas particularly exposed, of investigations and destruction in cultivations and around them on areas before contaminated, and on the whole areas recently infected, France has to apply a very severe legislation by economic necessity to protect the large regions of fruit and horticultural productions still sound, and to safeguard their possibilities for export.

In 1983, even before the results of these measures, three new areas have been infected: Haut-Savoie (one symptom) where Cotoneaster dammeri Royal Beauty had been imported, and after a massive destruction, the bacterium was neither detected in 1982 nor in symptoms nor in the epiphytic flora (185 analysis); in Loiret (3 Passe-Crassane orchards) where susceptible host plants were destroyed within a radius of 500 m and north of Paris (1 Passe-Crassane orchard). The extension in Nord continues towards north of Normandie and in Aquitaine around the Lotet Garonne contaminated areas.

Callu, D. (1984). "SITUATION OF FIREBLIGHT IN FRANCE". Acta Hortic. 151, 317-324
DOI: 10.17660/ActaHortic.1984.151.46

Acta Horticulturae