Temporal synergism by microencapsulation of piperonyl butoxide and alpha-cypermethrin overcomes insecticide resistance in crop pests.
A microencapsulated formulation that gives a burst release of piperonyl butoxide (PBO) several hours before a burst release of a conventional pyrethroid can effectively overcome metabolic resistance in Bemisia tabaci Gennadius, Helicoverpa armigera (Hübner), Aphis gossypii Glover and Myzus persicae Sulzer. This increase in efficacy against resistant pests was reflected in a field trial against B. tabaci on cotton, eliminating the need for two treatments. The ratio between the active insecticide and the synergist was found to be crucial in reducing resistance factors.
Bingham
Georgina
G
Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK.
Gunning
Robin V
RV
Gorman
Kevin
K
Field
Linda M
LM
Moores
Graham D
GD
D000818:Animals; D003692:Delayed-Action Preparations / Q000633:toxicity; D004357:Drug Synergism; D006430:Hemiptera / Q000187:drug effects*; D007305:Insecticide Resistance; D007306:Insecticides / Q000008:administration & dosage* / Q000633:toxicity; D007915:Lepidoptera / Q000187:drug effects*; D010574:Pesticide Synergists / Q000008:administration & dosage* / Q000633:toxicity; D010882:Piperonyl Butoxide / Q000008:administration & dosage* / Q000633:toxicity; D011722:Pyrethrins / Q000008:administration & dosage* / Q000633:toxicity
D003692:Delayed-Action Preparations; D007306:Insecticides; D010574:Pesticide Synergists; D011722:Pyrethrins; C017160:cypermethrin; D010882:Piperonyl Butoxide