Use of acylcyanamides or salts thereof for regulating plant growth

A method for regulating generative growth of plants or for breaking dormancy of fruit trees comprising application by dipping, brushing or spraying of branches, sprouts or buds of the plants with an aqueous solution comprising at least one active ingredient from a group of acylcyanamides or a salt thereof according to formula (I) or formula (II), during dormancy of the plants, wherein the following applies to formula (I) and formula (II)

• wherein radicals R1, R2, R3, R4, R5 and cations M1, M2 independently of one another mean:
• R1=hydrogen, C1 to C20 alkyl, C3 to C12 cycloalkyl, C2 to C20 alkenyl,
• C1 to C20 alkoxy, aryl, alkylaryl or arylalkyl, or a radical Q, wherein Q is:
• Q=C1 to C20 alkyl, C3 to C12 cycloalkyl, C2 to C20 alkenyl,
• C1 to C20 alkoxy, aryl, alkylaryl or arylalkyl, each substituted by a radical of formula (III) or formula (IV)
• M1, M2=independently of one another Li, Na, K, ½ Ca, ½ Mg, or NR2R3R4R5,
• R2, R3, R4, R5 =independently of one another hydrogen or C1 to C20 alkyl.