Raspberry canes dying

cairnxbets

Planted a row of Glen Ample Raspberries last year - they grew well and showed a lot of promise for this year. Unfortunately, the canes are gradually dying ( photos attached).
I have attached a photo of the Autumn Bliss raspberries grown next to them for comparison ( the nice, lush, green one!).
Any ideas as to what is causing this and how to save them? - new canes seem to be growing ok for next year, but there's no point if the same thing is going to happen!
Help!

Dovefromabove

Raspberries are very thirsty plants … are you giving them lots and lots of water? 

cairnxbets

If anything it's the opposite - as said, the autumn bliss next to them (photo) are doing great 

alexryzawlskiqBU-X4OF

I've never grown cane raspberries but the autumn ones which I have are very hardy and have lived for years living in clay that gets very dry and cracked sometimes in summer.

Blue Onion

https://www.rhs.org.uk/disease/phytophthora-root-rot

Raspberries can suffer from phytophthora root rot, especially in areas with heavy soil slow to drain.