Update on the situation of Xanthomonas axonopodis pv. citri in Florida (US)
At present, Xanthomonas axonopodis pv. citri (EPPO A1 quarantine pest) occurs in Florida (US) in four areas: Collier, Dade and Browards, Hendry, Manatee counties. It can be recalled that after being thought eradicated, X. axonopodis pv. citri was found again in south Florida (Dade and Broward counties) in October 1995 (EPPO RS 95/228, 97/129). This area is mostly urban and virtually no infection was detected in commercial orchards. Infestations were found on an area of 676 km². In May 1997, citrus canker was detected in Manatee, essentially in commercial orchards. The infested area covers about 360 ha. In June 1998, it was found in Collier county (EPPO RS 98/160) in commercial orchards, on an area of 74 ha. In February 1999, citrus canker was detected in Hendry county on a area of approximately 97;ha, mainly in commercial orchards. Intensive surveys are continuing in Florida to detect all infected trees in commercial orchards, nurseries and their vicinity, as well as in private gardens. Many infected trees and nearby trees have been destroyed and measures are taken to prevent any further spread of citrus canker.
Sources
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NAPPO Annual Meeting, 1999-10-19/22.
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