Disclosed is an insecticidal composition comprising by weight based on the total weight of the composition: (a) from about 0.25 to about 25% of one or more anthranilic diamide insecticides (b) from about 2.5 to about 25% of a poly(lactic acid) polymer component having a water dispersabilitiy of at least about 5% by weight at 20 C and an average molecular weight ranging from about 700 to about 4,000 daltons wherein the ratio of component (b) to component (a) is about 1:1 to about 1:10 by weight and (c) from about 20 to about 50% of a composition comprising either (i) a poly(lactide-co-glycolide) copolymer and a methyl poly(ethylene glycol) copolymer, or (ii) an acrylate/methacrylate-based polymer or copolymer and a methyl poly(ethylene glycol) copolymer wherein the methyl poly(ethylene glycol) copolymer has a water solubility of at least about 5% by weight at 20 °C, a hydrophilic-lipophilic balance value of at least about 7, and an average molecular weight ranging from 12,000 to 65,000, and further wherein the ratio of the poly(lactide-co-glycolide) or the acrylate/methacrylate-based polymer or copolymer, to the methyl poly(ethylene glycol) is about 1:1 to about 4:1 by weight and the ratio of component (c) to component (b) is about 2:1 to about 9:1 by weight. Also disclosed is a geotropic propagule coated with the insecticidal composition. Further disclosed is a liquid composition comprising the insecticidal composition, and a method for protecting a geotropic propagule and plant derived therefrom from a phytophagous insect pest.La présente invention concerne une composition insecticide comprenant en poids par rapport au poids total de la composition : (a) environ 0,25 % à environ 25 % dun ou de plusieurs insecticides à base de diamide anthranilique (b) environ 2,5 % à environ 25 % dun polymère de poly(acide lactique) présentant une capacité de dispersion dans leau dau moins environ 5 % en poids à 20 °C et un poids moléculaire moyen compris entre environ 700 et envir
