What question did this study set out to answer?

To evaluate the acaricide resistance status and establish baseline susceptibility of Tetranychus urticae in Korea.

Monitoring the Acaricide Resistance Status and Baseline Susceptibility of Field‐Collected Populations of Tetranychus urticae Koch in Korea

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Assesses acaricide resistance in Tetranychus urticae populations in Korea, suggesting targeted management strategies.

To evaluate the acaricide resistance status and establish baseline susceptibility of Tetranychus urticae in Korea.
Collected 15 T. urticae populations from strawberry fields in Korea (2022-2023)
Conducted direct-spray bioassays with eight acaricides from distinct IRAC MoA groups
Compared LC50 values to a long-term laboratory strain to calculate resistance ratios (RRs)
Most populations were susceptible (RR < 1) or displayed low resistance (RR < 5) to several acaricides
Moderate resistance (RR = 5-10) noted for abamectin, chlorfenapyr, and acequinocyl
One population from Jangseong showed high resistance to abamectin (RR = 31.23)
Resistance patterns varied geographically, indicating localized selection pressures

Mostafiz et al. (2026) studied this question.

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