FirstAct for Efficacy in ACCase-Tolerant Grain Sorghum

Authors

R. S. Currie, Kansas State UniversityFollow
P. W. Geier, Kansas State UniversityFollow

Keywords

ACCase-resistant sorghum, Double Team sorghum, grain sorghum

Abstract

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.

Recommended Citation

Currie, R. S. and Geier, P. W. (2022) "FirstAct for Efficacy in ACCase-Tolerant Grain Sorghum," Kansas Agricultural Experiment Station Research Reports: Vol. 8: Iss. 8. https://doi.org/10.4148/2378-5977.8344