Fruiting Raspberry canes died off

[Kea]

Some of the fruiting raspberry canes on my Glen moy have just suddenly gone brown overnight with fruit just ripening still on them. I can't see any reason for it, it's happened overnight and these canes are surrounded by lush new growth still so it's not herbicide damage from the plot neighbour.

Any ideas?

[Kea]

[BarriedaleNick]

No but it's happening to me as well - just the one plant.
Anyone??

[saddad]

Is it Raspberry cane beetle? I've never had it (touchwood) but read about it...  :-\

[Kea]

I'm hoping it's not Raspberry Blight...just found that on RHS website http://www.rhs.org.uk/advicesearch/profile.aspx?PID=266. There was no sign of this on my canes but maybe it appears later.

[AndrewB]

Me too but not overnight.  Anyone know if new ones need to go in different ground - whatever it is.

[jennym]

The problem with your raspberries might be root rot. I lost a 21 metre row last year to this. Its a fungus (can't think of name at the moment) that lives in the soil especially where the soil is heavy and may get waterlogged in winter. What seems to happen is that it lays dormant, then the raspberries start to grow nicely, then the temperature of the soil reaches a certain level and POW the fungus attacks and the plants start to shrivel and die. It's devastating.
If you have a look at the base on the canes you may see brown markings where the canes have started to rot off. If you dig them up, you may see that the roots are less well developed than you would expect and may see some signs of rotting.
Commercially they drench the soil with a fungicide  to help prevent it, but I'm told once you've got it in the soil its hard to get rid of. So I dug up what was left of mine in that area, burned the canes and roots, and re-planted fresh canes in another more well-drained placed with lighter soil.

[Kea]

I've got a heavy clay soil except where I have planted these raspberries....where i have a large area of sandy soil.