Yield losses of potatoes due to potato spindle tuber viroid in China (CN)
According to a report in Acta Phytophylactica Sinica potato spindle tuber viroid (EPPO A2 quarantine pest) is widespread in table-stock potato fields in the Heilongjiang Province (most northern province bordering Vladivostok) of China (CN). Yield losses of potatoes in this province reach an average of 20-30%.
Sources
Cui, R.C.; Li, Z.F.; Li, X.L.; Wang, G.X. (1992) Identification of potato spindle tuber viroid (PSTVd) and its control.
Acta Phytophylactica Sinica 19, 263-269.