Hi Does anyone know of a source (website, book, newsletter, etc.) that identifies apple varieties that are least susceptible to european canker (Nectria Canker, Nectria galligena)? I found one source that says "can be a problem on varieties with enlarged terminal fruiting spurs, such as Rome Beauty and Jerseyred." And, I found another source that says "Complete resistance to the pathogen in apple is not known." But are there cultivars that are less susceptible?
Well, I found another source that says "Trees of the cultivars 'Summerland Red MacIntosh" and "Harrold's Delicious" were quite susceptible ....while "Spartan" and "Goldern Delicious" proved relatively resisitant." I also found reference to ELLISONS ORANGE- somewhat canker prone. FORTUNE- ...European Canker, to which it is irritatingly suceptible. SPARTAN - It is somewhat prone to European canker. (which is contradicted by another source that says it is relatively resistant.) No doubt there is a good list somewhere.
Hi there, I found the information you are looking for on the OSU web site http://plant-disease.ippc.orst.edu/disease.cfm?RecordID=47 I also found some other sources but it is from Europe so it might not be accurate for the Pacific Northwest it is on the Chest of Books - http://chestofbooks.com/gardening-h...-Canker-Caused-By-Nectria-Galligena-Bres.html I hope that will help. I noticed that the Gravenstein is more susceptible on one site and more resistant on the other. I would am tempted to assume that OSU would have a geographical advantage over the European web site
Please do not hesitate to give your feedback on the information, I am always looking forward to hear from peers, Sylvain smartfrenchy@gmail.com