Ukrainian corn marked its first closing price decrease after a month of almost daily price increases, S&P Global Platts data showed Tuesday, as the market bore firmer hallmarks of a backwardated structure. S&P Global Platts assessed Ukrainian corn at $178.50/mt Tuesday, down $1 on the day, from is highest point since mid-July. A lack of railcars to support a steady flow of corn to port, coupled with overwhelming demand from China, among other destinations, triggered a surge in FOB Panamax port loading Handysize vessel prices in Ukraine. Ukraine’s hefty premium has seen traditional buyers shift their demand to the US where corn, even after freight costs, is cheaper.