摘要 |
PURPOSE:To provide the title composition markedly enhanced in the activity of the bactericidal compound as a component, thus significantly reduced in its dose, comprising an aralkylamine derivative having bactericidal activity or its acid-adduct salt and an alkyl dimethylaminoacetic acid betaine. CONSTITUTION:The objective composition comprising (A) an aralkylamine derivative (or its acid-adduct salt) of formula I (R<1> is halogen; R<2> and R<3> are each lower alkyl; C* is asymmetric carbon) having markedly high effects on controlling, in particular, of grain powdery mildew and rust and (B) 1-100 (pref. 5-60) pts.wt., per pt.wt. of the component A, of an alkyl dimethylaminoacetic acid betaine of formula II (R is 1-20 alkyl) of extremely high safety as bactericidal activity enhancer. As, the bactericidal activity of the component A is strongly enhanced in the present composition it also leads to enable its dosage to be reduced correspondingly. |