glyphosate
Rate 0.38 to 0.75 lb ae/A
Time Apply to actively growing plants emerged before boot stage.
Remarks Use along field edges and other non-cropped areas to prevent spread into bordering fields. Can be used as a spot treatment in certain crops (refer to label).
Caution Glyphosate is not selective.
Site of action Group 9: inhibits EPSP synthase
Chemical family None generally accepted
imazapic (Plateau)
Rate 0.063 to 0.188 lb/A
Time Apply preemergence for best results.
Remarks Use lower rates for dry climates and low leaf litter and higher rates as moisture increases and/or leaf litter increases. Selective to most native grasses. Higher rates may suppress seed of some cool-season grasses.
Caution Before using, note crop rotation restrictions.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Imidazolinone
sulfometuron (Oust)
Rate 1 to 1.5 oz ai/A (1.33 to 2 oz/A)
Time Apply in fall or in late winter before jointed goatgrass is 3 inches tall.
Remarks Selective to wheatgrass and smooth brome. Other desirable grasses may be stunted, stressed, or injured. Consult the label before using.
Caution Use on non-cropland such as roadsides. Do not let spray to drift onto sensitive crops.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea