COMPOSITION FOR PROTECTING CULTURAL PLANTS FROM DAMAGE OF HERBICIDAL HALOACETANILIDE AND MANUFACTURE

摘要

Halogen-acylated 1,2,3,4-tetrahydroisoquinolines of the formula I below are suitable for protecting crop plants, in particular cereals, maize, millet and rice, against the phytotoxic effect of halogenoacyl herbicides, as antidotes or safeners, without thereby reducing the desired herbicidal action on weeds. The 1,2,3,4-tetrahydroisoquinolines are those of the formula IMAGE in which R radicals are identical or different and represent hydrogen, halogen, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-alkylthio, halogenoallyl, halogenoalkoxy, alkenyloxy, alkinyloxy, dioxymethylene or nitro, n represents a number 1, 2 or 3, R1, R2 and R3 in each case represent hydrogen, C1-C6-alkyl or C3-C6-alkenyl and X represents C1-C6-halogenoalkyl or C2-C6-halogenoalkenyl, with the proviso that when R represents hydrogen, R1, R2 and R3 must not simultaneously denote hydrogen.