The Illinois Fertilizer & Chemical Association’s Keep it 4R Crop program is based on principles of 4R nutrient stewardship. IFCA works closely with its members, including fertilizer manufacturers, distributors, and agricultural retailers, to promote the 4Rs and uphold the IFCA 4R Code of Practice, which promotes education and adoption of specific fertilizer management practices designed to reduce nutrient losses and assure nutrient use by the crop.
