The Fertilizer Institute relies on members within the retail agronomy sector to accurately report on the acreages of growers they work with, while abiding by data privacy standards. TFI is leading the way in ensuring acres are accurately accounted for.

A 4R acre is defined as an acre of U.S. cropland under management using one or more 4R practices focusing on a combination of applying the right source of fertilizer in the right rate, at the right time, and in the right place.