First Report of Branched Broomrape (Phelipanche ramosa) on Celeriac (Apium graveolens) in Eastern France
Résumé
In September 2013, a field survey indicated that a celeriac (Apium graveolens) cv. Prinlz on clay soil in the Champagne-Ardennes region in eastern France was infested with branched broomrape where hemp had been grown 4 years before. The host symptoms observed were a slower growth of celeriac, along with leaf chlorosis, lower fruit production, and numerous abortions. The infestation of the celeriac crop was confirmed by verifying the attachment of branched broomrape to the celeriac roots. Branched broomrape (Orobanche ramosa) was identified based on various morphological characteristics. This is thought to be the first report of O. ramosa infection on celeriac in eastern France.