The article presents the development of a comprehensive and user-friendly digital service, “AgrochemExpert,” designed to address challenges associated with the selection and application of mineral fertilizers in Russia. The implementation of this product enables agricultural producers to make optimal decisions regarding the choice of mineral fertilizers for major agricultural crops by centralizing extensive information on fertilizers, providing a platform for interaction with experts, and delivering personalized recommendations. Through the use of decision-support tools, data analytics, and modeling, the platform enhances fertilizer application practices.