| 摘要 |
Benzimidazolesulphonic acid derivatives of the formula I <IMAGE> in which R1 denotes an unsaturated 5-membered heterocycle having a maximum of two heteroatoms N and/or S or an unsaturated 6-membered heterocycle having a maximum of two N atoms, where each of the heterocycles can be substituted, and X represents oxygen or sulphur, while R2, R3, R4 and n have the meanings mentioned herein, are useful microbicides. They can be employed in plant protection in the form of suitable compositions, for example for the control of fungal diseases. |
