PURPOSE: To provide a composition containing an aralkylamine derivative or its acid addition salt and the subject block polymer adduct, having remarkably improved fungicidal effect to enable the reduction of the application rate corresponding to the improvement and especially effective for controlling powdery mildew and rust of cereals.
CONSTITUTION: The objective fungicide composition is produced by compounding 1 pt.wt. of a compound of formula I (R1 is halogen; R2 and R3 are lower alkyl; *represents asymmetric carbon atom) with 5-60 pts.wt. of a compound of formula II (R is 1-4C alkyl; a and m are integers of 20-30; n is integer of 2-5). The activity of the fungicidal compound of formula I can be remarkably increased by the addition of the compound of formula II as a controlling power increasing agent and, as a result, the amount of the fungicide compound can be remarkably decreased. It is preferable to add the compound of formula II to a spraying solution containing the compound of formula I before use.
TAKETOMI HIROYASU
FUJII KATSUTOSHI
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