In the week that just-food kicked off its Open House period, the food sector saw a merger with implications on both sides of the Atlantic with the deal between Greencore and Northern Foods. In the US, Heinz, JM Smucker and Wal-Mart Stores reported their latest numbers to Wall Street. And, in Europe, the battle for yoghurt brand Yoplait intensified when Lactalis tabled a EUR1.4bn (US$1.91bn) - that was swiftly rejected - while the EU launched plans to reform farm policy.