Pyro 2-33 Joint Order

[lordkiwi]

given the study Joe found. It would seem Pyro 2-33 is not the most drought tolerant root stock.

Adams 2019 Availability list

I also had a question… I had ordered Harrow Sweet on OHxF 87 from Cummins, but their HS didn’t survive the winter. Pyro 2-33 is the dwarfing rootstock that Adams offers for HS. Table 2 from this chart from a trial in California shows that 3 out of 10 Pyro 2-33s died by the 8th leaf. Small sample size all around, but no other rootstock did this poorly in terms of survival. Does anyone here have experience with this rootstock who can comment on that?