We have 2 acres of organic thornless (quaochita, apache, nachez and arapaho) blackberries in central Florida. I planted 4 years ago and we have had 2-3 very wet summers. We have orange cane blotch caused by c. vericens. The local coop said to spray use copper sulphate, we did (weekly last growing season) and no results, most canes when they woke up were cracked and various infections seemed to set in.
We had a cold winter with about 400 chill hours too. Soil ph is about 6.9.
We much with oak and fertilize in spring (8-5-5). We have yet to get any "real" yield from 2 acres (most was about 1000 pounds). We spray fish emultion weekly during the growing season (April-October).
We have 2 acres of organic thornless (quaochita, apache, nachez and arapaho) blackberries in central Florida. I planted 4 years ago and we have had 2-3 very wet summers. We have orange cane blotch caused by c. vericens. The local coop said to spray use copper sulphate, we did (weekly last growing season) and no results, most canes when they woke up were cracked and various infections seemed to set in.
We had a cold winter with about 400 chill hours too. Soil ph is about 6.9.
We much with oak and fertilize in spring (8-5-5). We have yet to get any "real" yield from 2 acres (most was about 1000 pounds). We spray fish emultion weekly during the growing season (April-October).
What is the cure (if any) for orange cane blotch?
Any input is greatly appreciated.