There's a couple heavily used in warm season turf. Metsulfuron Methyl(Manor, Mansion) 1/4-1/2 oz per acre. Trifloxysulfuron Sodium(Monument) 10-15 grams per acre not gallon. I know gulfjoe made up a mix of 15 grams Monument and 2.4 oz Celsius for application to bermuda for removal of crabgrass as well as most broadleaf weeds.
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Benjamin Franklin 1775
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Benjamin Franklin Poor Richard's Almanac1738