The papaya ringspot virus (PRSV-p) is transmitted in a non-persistent way by females of Aphis nerii and other aphid species (Hemiptera: Aphididae). The effectiveness of the application of insecticides to reduce viral transmission has been questioned. Viral transmission tests have been performed with adult females of A. nerii in the laboratory, on papaya plants (Carica papaya). One, two, five and ten winged and wingless female adults of A. nerii were used. The presence of the PRSV-p was determined through the ELISA test. The effect of six insecticides/acaricides with different modes of action was evaluated (malathion, deltamethrin, imidacloprid, fenbutatin oxide, pymetrozine and rotenone), on the viral transmission and mortality of aphids. The products formulated were applied to papaya trees
