In seed potato cultivation, the leafroll virus, along with the Potato Virus Y (PVY), remains a major problem to this day. PVY in particular, which is transmitted by aphids, causes significant crop losses. That is why reducing these infections is the primary focus of one of the research studies conducted at WUR, which brings together growers and other industry stakeholders. To do so, researchers develop aphid flight warning systems and tools to enable them to more accurately estimate the risk of PVY infections at various cultivation stages. Based on this, they can formulate recommendations, for example for removing potato leaves or harvesting.