MITTEL ZUM PROTAHIEREN DER WIRKUNGSDAUER UND ZUR ERHOEHUNG DER SELEKTIVITAET VON HERBIZIDEN ZUSAMMENSETZUNGEN

The invention relates to compositions useful for prolonging the action and increasing the selectivity of herbicide compositions containing alpha -chloroacetamide derivatives as active ingredient as well as to highly selective herbicide compositions containing alpha -chloroacetamide derivatives as active ingredients and optionally an antidote wherein an animal derivative of the general formula (III) is used for achieving the prolonged action and increased selectivity. In the formula (III) (III) R5, R6, R7 and R8 stand independently for hydrogen, a C1-6 alkyl, C3-7 cycloalkyl or C2-5 alkenyl group optionally substituted by a C1-4 alkyl group; and R9 stands for hydrogen or a C1-4 alkyl group optionally substituted by halogen, or a phenyl group.