Disclosed is a pesticidal composition with reduced viscosity and foaming properties, comprising: a.) An active ingredient compound of a sparingly water-soluble pesticide b.) An organosilicone surface active agent (e.g. cyazofamid) c.) A viscosity-reducing agent (e.g. polyoxyethylene styrylphenyl) d.) An antifoaming agent e.) A pH adjustor and f.) A dispersant Wherein b.) the organosilicone surface active agent is a polyalkylene-modified polymethylsiloxane non-ionic surface active agent, and d.) the antifoaming agent contains polydimethylsiloxane as an active ingredient. Further disclosed is a method for reducing the viscosity of a pesticidal aqueous suspension compositon and a method for reducing the foaming property of a pesticidal aqueous suspension composition, both comprising said composition.
