Substituted benzamides as herbicides

A compound of Formula (I):

• or an agronomically acceptable salt thereof,
• wherein:—
• X is selected from the group consisting of —O—, —S(O)p— and —NR5;
• R1 is selected from the group consisting of C1-C4alkyl-, C1-C4haloalkyl-, C1-C4alkoxy-C1-C4alkyl- and C1-C4haloalkoxy-C1-C4alkyl-;
• R2 is selected from the group consisting of halogen, C1-C6alkyl-, C1-C3alkoxy-, C1-C6 haloalkyl-, C1-C3haloalkoxy- and —S(O)pC1-C6alkyl;
• R3 is C1-C3haloalkyl;
• R4 is selected from the group consisting of hydrogen, C1-C6alkyl-, C1-C6haloalkyl and C3-C6cycloalkyl;
• R5 is selected from the group consisting of hydrogen, C1-C3alkyl- and C1-C3alkoxy-;
• R6 is hydrogen or C1-C3alkyl;
• and
• p is 0, 1 or 2.