“…When scionwood is cut in late winter/early spring from non-symptomatic trees, there is virtually no risk to transmit 'Ca. P. mali' by grafting (Pedrazzoli et al, 2008b;Seemüller et al, 1984b). It has been reported that in summer, phytoplasmas can be eliminated from budwood by placing foliated budsticks for 24-48 hours in oxytetracycline or chlortetracycline solution (100-200 ppm) immediately before budding (SeidI, 1980).…”