Apple mosaic virus, how infectious? Do you "quarantine" traded scions?

[Audi_o_phile]

@murky

I recall seeing referenced from studies (maybe not specific to pruning tools) suggest that 70% is more effective because it can stay in contact longer before evaporating.

I recalled that statement as well and went looking:

@murky

I saw reported from a study that 70% is more effective than 90%, but don’t feel motivated to look for it right now. It’s memorable because its not super intuitive. Maybe because it takes longer to evaporate, or different surface tension for penetration or something.