| abstract |
Disclosed are 2-amino-4-oxo-4H-benzopyrans (I) (in which m = 0, 1 or 2; and R1 to R4 are as defined in the description), as well as salts of compound (I), and herbicides containing the 2-(4-heteroaryloxy)- and 2-(4-aryloxy) phenoxyacetic acid derivatives and/or cyclohexenone derivatives as herbicidally active substances, and 2-amino-4-oxo-4H-benzopyrans (I') as antidotes. |