alpha -Azolyl-glycol derivatives of the formula <IMAGE> I where R1 is alkyl, R2 is alkyl or unsubstituted or substituted phenyl, R3 is hydrogen, alkyl, alkenyl, alkynyl or unsubstituted or substituted benzyl, R4 is unsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, arylalkyl or heteroarylalkyl or, where n=1, may also be unsubstituted or substituted aryl or heteroaryl, X is CH or N and n is O or 1, their salts and metal complexes tolerated by crop plants, their preparation, and agents containing these derivatives for controlling fungi and regulating plant growth.