| 摘要 |
METHOD OF IMPROVING RESIDUAL HERBICIDAL ACTIVITY AND COMPOSITIONS Herbicide combinations with improved residual activity comprising (a) compounds of the formula wherein R1 is selected from the group consisting of lower alkyl having from 2 to 6 carbon atoms, haloalkyl, benzyl and substituted benzyl, phenethyl, pyridylmethyl, cycloalkyl having from 3 to 6 carbon atoms, and haloalkenyl having from 3 to 6 carbon atoms, and R2 and R3 are each independently selected from the group consisting of C2-C6 alkyl, C2-C6 alkenyl, and C3-C8 cycloalkyl, provided further that R2 and R3 can join with the nitrogen to which they are attached to form a 5 to 6 carbon ring structure, and (b) an herbicidally effective amount of a chloroacetanilide having the formula in which R4 is a straight or branched chain lower alkyl group having from 1 to 6 carbon atoms; R5 is a straight or branched chain lower alkyl group having from 1 to 6 carbon atoms; and R6 is (-?-O-R7), or (-O-R7), where R7 is a straight or branched chain lower alkyl group having from 1 to 6 carbon atoms. |
