Novel quaternary salts and their use in agricultural formulations

Compounds of the Formula I

• 6
• where A is any pesticidally active compound with pKa from about 3 to about 7;
• R1 is substituted or unsubstituted benzyl or substituted or unsubstituted methylnapthyl group;
• R2, R3 and R4 are each a substituted or unsubstituted alkyl or substituted or unsubstituted alkaryl group, provided that when the pesticide A is a sulfonylurea herbicide of the formula JSO2NHCONR6Q and R1 is unsubstituted benzyl, then one of R2, R3 or R4 is other than methyl or ethyl;