Abstract

CERNA CHAVEZ, Ernesto et al. Susceptibility of Tetranychus urticae Koch (Acari: Tetranychidae) to acaricides in roses. Rev. Mex. Cienc. Agríc [online]. 2023, vol.14, n.6, e3095.  Epub Oct 30, 2023. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v14i6.3095.

Tetranychus urticae Koch is the most important pest in rose crops, since it reduces the quality of production and increases management costs, consequently, acaricides have been widely used for its control. Therefore, susceptibility tests were performed to determine resistance in adult females of T. urticae to acaricides, abamectin, acequinocyl, chlorfenapyr, and extract of Cinnamomum zeylanicum J. Presl, on three populations of Tenancingo, State of Mexico and a susceptible line. The research was carried out in 2021 in the Department of Agricultural Parasitology, the leaf immersion technique was used for the evaluation of the pesticides (IRAC, 2009). The results demonstrated that the population that showed a tendency to develop resistance to the pesticide abamectin was L3 (Rancho Lizflor), while the populations L1 (Rancho Los Pilares) and L2 (Rancho Isoflor) had a tendency towards the acaricide acequinocyl, so it is recommended to reduce the applications and rotation of pesticides of different toxicological group. For the rest of the pesticides, no resistance was reported in any of the populations under study, for this reason they can be considered effective for the control of T. urticae in Tenancingo, State of Mexico.

Keywords : Cinnamomum zeylanicum; two-spotted spider mite; resistance.

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