Fuente: WIPO "tomato" The present invention relates to substituted hexahydrofuro[3,4-b]furans of the general formula (I) or salts thereof, where the radicals in the general fomula (I) correspond to the definitions given in the description, and to their use as herbicides, in particular for controlling weed grasses and/or broad-leaved weeds in crops of useful plants and/or as plant growth regulators for influencing the growth of crops of useful plants.