The invention relates to preparations, in particular plant-protectivepreparations which contain a mixture of at least two different active plant-protective substances, wherein a) at least one active substance is selectedfrom a conazole group (active substance 1) and b) another active plant-protective substance (active substance 2) whose water solubility at atemperature of 20 ~C is less than 20 g/l., c) at least one type of copolymerCP consisting of M monomers comprising .alpha.) at least one type ofmonoethylenically unsaturated monomer M1 comprising at least one sulphonicacid group and .beta.) at least one type of neutral monoethylenicallyunsaturated monomer M2, wherein the quantitative ratio between the activesubstance 1 and the other active plant-protective substance 2 ranges from 1:10to 10:1. Said invention also relates to novel copolymers CP which are embodiedin the form of polymers consisting of at least three types of differentmonoethylenically unsaturated monomers M and comprise, in the polymerisationincorporated form, .alpha.) at least one type of monoethylenically unsaturatedmonomer M1 comprising at least one sulphonic acid group, .beta.1) at least onetype of neutral monoethylenically unsaturated monomer M2 whose watersolubility at a temperature of 20 ~C is less than 30 g/l and .beta.2) at leastone type of neutral monoethylenically unsaturated monomer M2b whose watersolubility at a temperature of 20 ~C is greater than 50 g/l.
