History of fire blight in France 1972/1989, and administrative measures.
Erwinia amylovora was first detected in northern France on hawthorn (Crataegus) in 1972 and appeared on pear in southwestern France in 1987. During 1982-83 fire blight was reported in the Paris area and Loire Valley. Details are given of affected hosts and of legislation concerning surveys, restriction of plant movement, control and eradication measures to prevent further spread. In 1989 symptoms were seen in early spring on pears in southwestern France and the expected occurrence of infection during the secondary blossom period, especially on cv. Passa Crassana during May and June, requires particular vigilance. This paper was presented at the Fifth International Workshop on Fireblight, held in Diepenbeek, Belgium on 19-22 Jun., 1989.