Microencapsulated formulations of macrolide lactones (abamectin, milbemectin, milbemycins emamectin, avermectins, ivermectins) wherein the active ingredient is protected from UV-degradation, with exceptional release characteristics resembling those of an emulsion concentrate or, if desired, of long-lasting effect; further with appropriate rheological properties, and with reduced toxicity. The invention provides a unique microencapsulation process for the chemical stability and biological activity of mectins, e.g. abamectin, and provides microcapsules of mectins to be used in formulations CS, WG/CS, ZC, EC/CS and any formulation type containing microcapsules and combination with other biologically active ingredients.
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