Finding of Ralstonia solanacearum on Pelargonium in Florida (US)
As reported in EPPO RS 2001/106 and 2001/124, Ralstonia solanacearum (EPPO A2 quarantine pest) has been reported in several countries on Pelargonium. In autumn, 2001 a further finding has been made on Pelargonium x hortorum (cvs Patriot Cherry and Patriot Bright Red) grown in Florida, US. Affected plants showed wilted and chlorotic leaves, and rotting of the stem base and roots. Inspections were done at the production site to assess the severity of the disease. Several benches of diseased Pelargonium were observed. Sanitation procedures were applied and 60,000 Pelargonium plants were destroyed. Total loss was estimated at 80,000 USD. In this case, R. solanacearum biovar 1 was identified.
Sources
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Momol, T.; Pradhanang, P. (2002) Occurrence of Southern wilt caused by Ralstonia solanacearum on Geranium in Florida.
University of Florida, Pest Alert of 2002-06-07.
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