Fungicidal guanidines - for combatting mildew and grey mould

摘要

Fungicidal agent for combatting mildew fungi and grey moulds on plants contains as active substance a cpd of formula (I) (where R is H, Me, Et, n-Pr or i-Pr; R1 is Me, Et, n-Pr, i-Pr, n-Bu, i-Bu or pentyl; and X, Y and Z are H, Cl, Br, Me, OMe, NO2 or CF3) or a salt thereof of the formula (I). HB (in which B is Cl', CH3SO4'.(CH3)2NCSS', S4O6"6, or C6H2(NO2)3O'). The cpds have the advantages of being obtainable relatively cheaply from readily accessible starting materials. Test results given in the specification show that (I) have good activity against mildew fungi on cucumbers and apples and Botrytis fabae on beans.