The present invention relates to a composition comprising a first salt, which contains a first ani-onic pesticide (A1) and a cationic polyamine (B), and a second salt, which contains a second anionic pesticide (A2) and a cationic polyamine (B), wherein both salts contain the same cati-onic polyamine (B), and wherein the cationic polyamine comprises at least two amino groups. It further relates to a method for preparing said comprising the step of contacting the first salt and the second salt. In addition, the invention relates to a method of combating harmful insects and/or phytopathogenic fungi, which comprises contacting plants, seed, soil or habitat of plants in or on which the harmful insects and/or phytopathogenic fungi are growing or may grow, plants, seed or soil to be protected from attack or infestation by said harmful insects and/or phy-topathogenic fungi with an effective amount of said composition. It also relates to a method of controlling undesired vegetation, which comprises allowing a herbicidal effective amount of said composition to act on plants, their habitat or on seed of said plants. Finally, the invention relates to seed comprising said composition.本發明係關於一種組合物,其包含第一鹽,其含有第一陰離子農藥(A1)及陽離子聚胺(B);及第二鹽,其含有第二陰離子農藥(A2)及陽離子聚胺(B),其中該兩種鹽均含有相同陽離子聚胺(B),且其中該陽離子聚胺包含至少兩個胺基。本發明進一步係關於一種製備該組合物之方法,其包括使該第一鹽與該第二鹽接觸之步驟。另外,本發明係關於防治有害昆蟲及/或植物病原真菌之方法,其包括使其中或其上有害昆蟲及/或植物病原真菌正在生長或可生長之植物、種子、土壤或植物棲息地、欲保護免受該等有害昆蟲及/或植物病原真菌攻擊或侵擾之植物、種子或土壤與有效量之該組合物接觸。本發明亦係關於控制不期望植被之方法,其包括使除草有效量之該組合物作用於該植物、其棲息地或該等植物之種子。最後,本發明係關於包含該組合物之種子。
