Herbicidal composition containing a compound having the following formula or its salt: ##STR1## wherein W is an oxygen atom, a sulfur atom, a NH group or a group of the formula, >NC(O)B; Z is a methine group or a nitrogen group; X is a phenyl group which may be substituted or a group having the formula: ##STR2## and n is an integer of from 1 to 3.
除草剂组合物,包含具有以下公式或其盐的化合物:##STR1##其中W是氧原子、
硫原子、NH基团或公式>NC(O)B的基团;Z是甲基基团或氮基团;X是苯基,可能被取代,或具有公式##STR2##,n是1到3的整数。