ACCase-resistant sorghum, Double Team sorghum, grain sorghum
The objective of this study was to compare FirstAct with several tank mix partners for efficacy in herbicide-tolerant grain sorghum. FirstAct (quizalofop) alone or in tank mixtures controlled Johnsongrass 94% or more. However, tank mixing FirstAct with any broadleaf herbicide was generally antagonistic to Palmer amaranth control. Minor sorghum injury was 5% or less by four weeks after postemergence treatment. Sorghum yields increased with all postemergence treatments except with atrazine alone.
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Currie, R. S. and Geier, P. W.
"FirstAct for Efficacy in ACCase-Tolerant Grain Sorghum,"
Kansas Agricultural Experiment Station Research Reports: