Compounds of the formula:
wherein R, is a pyrazolyl group which may be substituted; R2 and R3 respectively are a lower alkyl group or a lower alkoxy group; and Z is CH or N, which are useful as herbicides.
Novel compounds of the formula: ##STR1## wherein R.sub.1 is a pyrazolyl group which may be substituted; R.sub.2 and R.sub.3 respectively are a lower alkyl group or a lower alkoxy group; and Z is CH or N, which are useful as herbicides.