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9th International Conference on Silicon in Agriculture Silicon for Sustainable Agriculture and Resilient Ecosystems Belgrade SERBIA September 1519 2025 9th International Conference on Silicon in Agriculture Silicon for Sustainable Agriculture and Resilient Ecosystems Belgrade SERBIA September 1519 2025 About ISSAG Our Mission Globally Advance and Promulgate Knowledge Relevant to Silicon in Agriculture and Related Disciplines Silicon is a Beneficial Substance AAPFCO Categorizes Silicon as a Beneficial Substance In 2013 AAPFCO Association of American Plant Food Control Officials defined a beneficial substance as any substance or compound other than primary secondary and micro plant nutrients that can be demonstrated by scientific research to be beneficial to one or more species of plants when applied to the plant or soil. Learn More. Broaden Your Silicon Knowledge READ ISSAG peer reviewed papers on silicon research. WATCH video and interviews with leading silicon researchers.