 Soil classification, study and systematization are championed by Embrapa Soils, with participation from groups such as the RADAM Project, the Rural University (now UFRRJ) and other agronomists.In 2010 Brazil was the third largest exporter of agricultural products in the world, behind only the United States and the European Union.During the last two decades of the 20th century, Brazil witnessed a doubling of yield per acre.