The Illinois Fertilizer & Chemical Association’s Keep it 4R Crop program is based on the principles of 4R nutrient stewardship:
right source, right rate, right time, and right place. 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. IFCA also participates in NREC-funded projects, implementing and managing nutrient applications and cover crops at several NREC research sites. In September 2019, IFCA worked with NREC to update the guide entitled “Considering Cover Crops? Research-Based Recommendations, Observations, and Advice to Help Assure Success.”
For more information, see ifca.com/4R/Code.