| abstract |
Abstract of the Disclosure: 4,5-Dimethoxypyridazones of the formula where X and Y are each oxygen, sulfur, a sulfinyl group or a sulfo group, R1 and R2 and each hydrogen or alkyl, Z1, Z2 and Z3 are each hydrogen, halogen, nitro, cyano, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkyl-mercapto, alkylsulfinyl or alkylsulfonyl, n and p are each 0 or 1 and m and q are each 0 to 8, are used for control-ling undesirable plant growth. |