Grants and Contracts Details
Description
Abstract
Italian ryegrass (annual ryegrass) con nues to be problema c in Kentucky wheat acres and has shown rapid
increases in infesta ons across the state. This weed species has proved to be the most problema c weed for
Kentucky wheat growers with our previous research iden fying mul ple popula ons of glyphosate-resistant,
pinoxaden (Axial XL), and pinoxaden plus fenoxaprop (Axial Bold) resistant annual ryegrass in Kentucky wheat
?elds.
In the absence of a post-emergence herbicide op on many Kentucky wheat growers have u lized
pyroxasulfone based residual herbicides for control of ryegrass. While these preemergence herbicides have
proven to be e?ec ve for suppressing fall emerging ryegrass plants, we have witnessed more ryegrass
emergence in the spring months when fall applied residuals have dissipated. The previous mild Kentucky
winter have likely contributed to this trend of increased spring ryegrass emergence, but also has accelerated
residual herbicide degrada on. Research needs to be conducted to further examine how to maximize
residual herbicide for both fall and spring emerging popula ons of Italian ryegrass in Kentucky wheat.
Addi onally, we must think beyond herbicides for future control of this weed species. The lack of poten al
postemergence herbicides in the very near future and limita ons of currently e?ec ve preemergence
herbicides call for addi onal control tac cs such as harvest weed seed control at harvest. Our previous
research has shown that a seed control unit, such as the Redekop Seed Control Unit, can e?ec vely reduce
Italian ryegrass seed deposited onto the ?eld at wheat harvest. Sha ering of ryegrass seed at the combine
header negated the u lity of the SCU and thus we need to inves gate poten al mi ga ons to reduce ryegrass
see sha er at the combine head.
Status | Finished |
---|---|
Effective start/end date | 9/1/23 → 12/31/24 |
Funding
- Kentucky Small Grain Growers Association: $16,000.00
Fingerprint
Explore the research topics touched on by this project. These labels are generated based on the underlying awards/grants. Together they form a unique fingerprint.