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Weed Science

Kansas Agricultural Experiment Station Research Reports

2023

Herbicide-resistance

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Residual Herbicides Alone And In Combinations For Fallow Weed Control, Randall S. Currie, Patrick W. Geier Jan 2023

Residual Herbicides Alone And In Combinations For Fallow Weed Control, Randall S. Currie, Patrick W. Geier

Kansas Agricultural Experiment Station Research Reports

The objective of this research was to compare various novel herbicides for efficacy in fallow. An experiment compared residual herbicides for preemergence weed control in fallow. While most herbicides provided good kochia control early on, only the treatments containing Alite 27 (isoxaflutole) controlled kochia 90% or more by 50 days after treatment. Similarly, most herbicides controlled Russian thistle 83% or more early. However, Russian thistle control declined such that only the treatments containing Alite 27 provided as much as 74% control later in the season.


Efficacy And Crop Response With Firstact In Accase-Tolerant Grain Sorghum, Randall S. Currie, Patrick W. Geier Jan 2023

Efficacy And Crop Response With Firstact In Accase-Tolerant Grain Sorghum, Randall S. Currie, Patrick W. Geier

Kansas Agricultural Experiment Station Research Reports

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.