Herbicidal composition and method for controlling weeds

A herbicidal composition including the compound of formula (I):

• or a salt thereof, wherein:
• R1 is H or C1-4alkyl optionally substituted with R1a, phenyl, or benzyl, wherein each of said alkyl, phenyl or benzyl is optionally substituted with up to 3 F atoms, an OH group, or an OC1-4alkyl group;
• R1a is
• each R1b is, independently, H, C1-4alkyl, or cyclopropyl;
• each of R2 and R3 is, independently, H, Cl, F, CH3, or R2 and R3 together with the intervening carbon is cyclopropyl;
• R4 is H, Cl, or F;
• R5 is H or F;
• each of R6 and R7 is, independently, F, H, C1-2alkyl optionally substituted with OH, alkenyl, OH, OC1-2alkyl, O-cyclopropyl, OCH2CCH, NHCH2Ph, N(Rx)2, or SCH3;
• R8 is H or F;
• each Rx is, independently, H, CH3, or C(O)CH3;
• and
• wherein Ring A contains at least 4 F atom substituents,
• and at least one second herbicide selected from glyphosate, pyroxasulfone, mesotrione, glufosinate, dicamba, 2,4-D acid, 2,4-D ester, metribuzin, and S-metolachlor,
• wherein a weight ratio of the compound of formula (I) to the second herbicide is about 1:0.1 to 1:50.