Agrium, Potash talk merger

Canada's Agrium Inc and Potash Corp of Saskatchewan Inc said they are in talks to merge, a deal that would create a fertilizer and farm retailing giant worth more than $25 billion but also trigger U.S. regulatory scrutiny.  Potash Corp, the world's biggest crop nutrient company by capacity and Agrium, North America's largest farm retailer, said in separate statements that the talks were at a "preliminary" stage about a possible merger of equals, adding that no agreement has been reached.