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Dose response curves for four populations of D. ciliaris var. chrysoblephara to metamifop generated from dose response experiments. A log-logistic model was used to analyze the test data (the fresh weight percentage of the control). The GR50 values of resistant populations (JYX-8, JTX-98, and JTX-99) were significantly higher than in the sensitive population JSS-19. Vertical bars indicate standard errors.
