Described are 2-(3-alkylthiobenzoyl)cyclohexanediones of the general formula (I) as herbicides. X, Y, R1 to R8 in this formula (I) stand for radicals such as hydrogen or organic radicals such as alkyl and alkoxy.Se describen 2-(3-alquiltiobenzoil)ciclohexanodionas de fórmula general (I) como herbicidas. En esta fórmula (I) X, Y, R1 a R8 representan restos tales como hidrógeno, restos orgánicos tales como alquilo y alcoxilo.