Fecha de publicación: -- Fuente: WIPO "tomato" The present invention provides a method for controlling the degradation of cartap in a solid insecticidal composition of wettable powder (WP) or water dispersible granule (WDG/WG). The method comprises a solid insecticidal composition comprising: a) an effective amount of cartap or its agriculturally acceptable salts; b) optionally an additional insecticide, and c) pH adjuster, wherein the moisture content in said solid composition is less than 5% by weight, based on the total weight of the composition and the pH at 25° C after dilution with water, is less than 5.0. the degradation of cartap in said solid composition is less than 5% per weight after 14 days at 25 °C.