There are no biological control measures available for jointed goatgrass.
Chemical Control: The use of nonselective herbicides (glyphosate, paraquat, glufosinate) for control of jointed goatgrass should be considered following wheat harvest and in the early spring in a wheat fallow rotation. If precipitation events occur during the fallow season and the fall prior to planting consider nonselective herbicide applications prior to planting a new crop.
Postemergence control of jointed goatgrass in cereal crops is limited. The use of the Clearfield production system has been very effective for the management of jointed goatgrass. This is as herbicide-tolerant wheat to the chemical imazamox (Beyond). Jointed goatgrass is extremely sensitive to this chemical and complete control can be obtained, however, misuse and continued use can lead to herbicide resistance within jointed goatgrass. Confirmed resistance of jointed goatgrass has been confirmed in eastern Washington.
To prevent resistance and manage goatgrass populations, use herbicide with a different mode of action on a rotational basis and implement alternative crop rotations.
Please refer to the PNW Weed Management Handbook for additional information.