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 its main focus is potash, where it is the global leader in installed capacity with a roughly 20% market share. The company is also the largest agricultural retailer in the United States, selling fertilizers, crop chemicals, seeds, and services directlyto farm customers through its brick-and-mortar stores and online platforms.