Refer to the label for crop rotation restrictions. Section 2ee label for Idaho, Washington, and Oregon. Apply when quackgrass shoots are 6 to 8 inches tall. These materials will control only wild oats emerged at the time of application. Later-emerging wild oats will not be controlled.
Paraquat is a restricted-use herbicide.
Do not apply either paraquat or glyphosate if potatoes have emerged, or crop injury may occur. If applied after planting, incorporate either mechanically into the top 2 to 3 inches of soil or by sprinkler irrigation. Refer to previous discussions of EPTC in this section. A new Matrix label has been submitted to EPA but was not available before this handbook went to press. Be sure to consult the new label for current recommendations.