Created in 2018 as a result of the merger between PotashCorp and Agrium, Nutrien is the world's largest fertilizer producer by capacity. Nutrien produces the three main crop nutrients--nitrogen, potash, and phosphate--although the company's main focus is potash, where it is the global leader in installed capacity with roughly 20% share. The company is also the largest agricultural retailer in the United States, selling fertilizers, crop chemicals, and seed directly to farm customers. More