Abstract
This research was conducted to determine the efficacy of quizalofop (FirstAct) herbicide in herbicide-tolerant grain sorghum. FirstAct herbicide was evaluated for efficacy and crop response in Double Team (ACCase-tolerant) sorghum. All herbicides controlled Palmer amaranth 90% or more and volunteer corn 95% or more late in the season. Johnsongrass control was 86 to 91%. Minor sorghum injury early in the season did not persist. Sorghum receiving FirstAct late postemergence yielded more grain than the nontreated control or sorghum receiving Parallel Plus preemergence.
Keywords: Herbicide-resistance, volunteer corn, grain sorghum, johnsongrass, palmer amaranth
How to Cite:
Currie, R. S. & Geier, P. W., (2023) “Efficacy and Crop Response with FirstAct in ACCase-Tolerant Grain Sorghum”, Kansas Agricultural Experiment Station Research Reports 9(6). doi: https://doi.org/10.4148/2378-5977.8497
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