As a result of this response homogeneity, reduced selection pressure for this larval population's resistance is expected for the PAEO synergistic combinations with alpha-cypermethrin and beta-cypermethrin via topical contamination.
50] of the synergistic combinations of the PAEO with the insecticides evaluated, and also indicated sufficient toxicity for promoting S.
For this contamination pathway, there were significant SF values for the two PAEO sub-doses combinations with beta-cypermethrin (SF = 9.
50] of the PAEO and for the two synergistic PAEO combinations with gamma-cyhalothrin via residual contact.
Contrary to what was expected, higher SF values were observed for the combinations of PAEO used at 1/4 of the [LC.
As a result of this response homogeneity, corroborating previously obtained results for topical contact, reduced selection pressure for this larval population's resistance is expected for the synergistic combinations of PAEO with alpha- and beta-cypermethrin.
As an additional tool for managing resistance to insecticides, PAEO has the potential to reduce commercial insecticide doses and PBO in particular (WALIA et al.
Significance of the SF values of the combinations of PAEO with the alpha-cypermethrin, beta-cypermethrin, fenpropathrin, and gammacyhalothrin insecticides indicates a potential for this essential oil to be used as an alternative to PBO.