The effect of FulfillRTM (pymetrozine) on green peach aphids (Myzus persicae Sulzer) in comparison to current aphicides, and the role of adjuvants for use with this aphicide

Fulfill® 50 WG is a new highly selective aphicide that contains the active ingredient pymetrozine. Pymetrozine has a unique mode of action. Instead of acting as a general toxin, this aphicide inhibits feeding in aphids which consequently leads to starvation. This aphicide is currently being considered for registration in Canada. The main objectives of this study were: (1) to verify that aphids cease feeding after exposure to Fulfill®, (2) to determine, using scanning electron microscopy, whether Fulfill® causes any morphological changes to the aphid proboscis, (3) to compare the efficacy of Fulfill ® with the currently used insecticides, Monitor® and Pirimor® under PEI conditions and (4) to determine which adjuvant, if any, increases the efficacy of Fulfill®.

All pesticide applications occurred in the field with a tractor mounted sprayer. In the lab studies, aphids were placed onto leaves that were sprayed in the field, then were brought to the lab and placed in vials of water. (Abstract shortened by UMI.).