In field trials in Scotland, 2 sprayers were compared for their effectiveness in applying the contact and stomach-acting insecticide fenitrothion for the control of aphids (mainly Amphorophora idaei) on the aphid-susceptible raspberry cultivar Malling Jewel. After modifications to the position of the spray nozzles, the medium-volume (350 litres/ha), air-assisted cross-flow sprayer was nearly as efficient as the conventional high-volume (2000 litres/ha) hydraulic sprayer at comparable pesticide dosage rates. The possibility of savings in application costs is discussed.