Potentiation of a propargite and fenpyroximate mixture against two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae).
Using susceptible and resistant reference strains and standard bioassay methods a new miticide product was screened for efficacy and cross-resistance against two-spotted spider mite, Tetranychus urticae Koch. Experimental product NN1 850.0 EW (fenpyroximate and propargite 3:10 ratio) was significantly (P<0.05) more toxic than either compound tested alone (co-toxicity index 1029). Non-overlapping 95% CIs at the LC50 and LC99 level suggest that there is no cross-resistance to NN1 850.0 EW from existing organophosphate and pyrethroid resistance. NN1 850.0 EW is worthy of further development for T. urticae control.
EMAI, NSW Agriculture, PMB 8, 2570 Camden, Australia. grant.herron@agric.nsw.gov.au
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GA
Herron
J
J
Rophail
J
J
Holloway
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I
Barchia
D000818:Animals; D001565:Benzoates; D003510:Cyclohexanes; D005260:Female; D008925:Mites / Q000254:growth & development*; D010575:Pesticides; D011720:Pyrazoles
D001565:Benzoates; D003510:Cyclohexanes; D010575:Pesticides; D011720:Pyrazoles; C002771:Omite; C415144:fenpyroximate