A three year field study conducted at the Potato Research Centre in Frederi
cton, New Brunswick, showed that imidacloprid applied in furrow at planting
or twice to the foliage in mid July could result in a limited reduction of
PLRV spread in the potato crop. Tests did not determine any significant ef
fect on the reduction of the spread of PVY. The aphicidal property of imida
cloprid was confirmed.