ALKYL ETHER SULPHATES COMPRISING BETWEEN 1 AND 9 C ATOMS IN THE ALKYL CHAIN AND BETWEEN 1 AND 20 ALKENOXY UNITS IN THE ETHER FRACTION ARE SUITABLE FOR USE AS LOW-FOAMING ADDITIVES FOR INTENSIFYING THE ACTION OF AGROCHEMICALS THAT ARE WATER-SOLUBLE OR PARTIALLY WATER-SOLUBLE. SAID SULPHATES PERMIT THE PRODUCTION OF LOW-FOAMING PREPARATIONS FOR CROP PROTECTION.