Raspberry Anthracnose - Ask Extension
Hello, is this anthracnose on my raspberries? I don't know the varietal, they're a floricane-fruiting red raspberry, one's thornless the other isn't. ...
Knowledgebase
Raspberry Anthracnose #815475
Asked October 29, 2022, 12:38 AM EDT
Hello, is this anthracnose on my raspberries? I don't know the varietal, they're a floricane-fruiting red raspberry, one's thornless the other isn't. Thank you!
Marion County Oregon
Expert Response
Anthracnose is definitely a possibility. There are some other fungal problems that affect raspberry, too. Would need lab testing to differentiate. (Let me know if you want to go that route and I can share details.)
Are these canes that already fruited this year? They may be dying back and this is a natural decay process. Did you have any issues with the foliage or the fruit?
Are these canes that already fruited this year? They may be dying back and this is a natural decay process. Did you have any issues with the foliage or the fruit?
Thank you! These are the 2022 primocanes, they're not everbearing so they should fruit next year (although with this very warm autumn I'm getting a lot of fruit set right now on primocanes for non-everbearing varieties). I'm just running into a lot of brittleness on these canes and breaking in the wind so I was hoping to prevent that for next year.
Sean
Sean Lorimor
Chemical Engineer P.E.
Salem, OR
Chemical Engineer P.E.
Salem, OR
Best management is to prune the infected canes out. Especially if you have areas of the raspberry patch where the canes still look healthy. Caveat-wait until the patch is dry to avoid spreading. So maybe after this stretch of wet days has passed.
Here's some info on raspberry anthracnose that goes into more detail on controls you can try. There may be other fungi involved (won't know unless you send to a lab to get tested $$). But pruning any diseased canes out helps because it simply removes the problem (whatever fungus might be involved) from the raspberry patch.
Take a look at that publication and let me know what additional questions you have.
Here's some info on raspberry anthracnose that goes into more detail on controls you can try. There may be other fungi involved (won't know unless you send to a lab to get tested $$). But pruning any diseased canes out helps because it simply removes the problem (whatever fungus might be involved) from the raspberry patch.
Take a look at that publication and let me know what additional questions you have.
