Risk factors
The development of PVM infection results from a combination of:
- different sources of infection, either internal (volunteers, seed tubers, weeds) and/or external (nearby potato crops, gardens, weeds);
- the relative significance of flights of aphids during the growing season (related to climatic conditions and nearby crops);
- the level of control measures taken in seed potato production (roguing, crop management such as weed control, crop protection, haulm destruction and field and/or lot inspection);
- the susceptibility of the potato cultivar.