First report of branched broomrape (Orobanche ramosa) on oilseed rape (Brassica napus), wild mustard (Sinapis arvensis), and wild vetch (Vicia spp.) in northern Greece.
During 2010 and 2011, severe broomrape (Orobanche ramosa) infection was found in an oilseed rape crop in northern Greece, where oriental tobacco, a susceptible host, was grown 20 years ago. The infestation of the oilseed rape crop was confirmed by digging to verify the attachment of broomrape to rape roots. Yield losses were estimated at 30-60%. In 2011, broomrape was found parasitizing wild mustard (Sinapis alba) roots and in 2010 and 2011, broomrape also parasitized wild vetch (Vicia sp.). The attachment of broomrape to roots of the hosts was verified at a 5 cm soil depth. The effects of soil texture and climatic factors on broomrape infestation were also determined. This is thought to be the first report of broomrape infestation on oilseed rape, wild mustard and wild vetch in northern Greece.