| abstract |
Herbicidal aryltetrazolinones and thiones of formula (I), in which W is oxygen or sulfur; R is alkyl, fluoroalkyl, alkenyl, haloalkenyl, cyanoalkyl, alkylthioalkyl, haloalkoxyalkyl, trifluoromethylthio or alkoxyalkyl; one of X1 and X2 is fluorine, chlorine, or bromine and the other is fluorine, chlorine, bromine, alkyl, or haloalkyl; and Z is hydrogen or a group selected from a variety of substitutents and is preferably a 2-propynyloxy group. |