Wheat (milling and feed) and corn prices continued to rise in RUB expression at the Russian grain market, although at a higher rate than previously. They also grew in USD expression due to strengthening of the ruble. Meanwhile, milling rye and feed barley prices decreased. Russian Grain Market Market Trends: 9-13 May 2016 Wheat  (milling and feed) and corn prices continued to rise in RUB expression, although at a higher rate than previously. They also grew in USD expression due to strengthening of the ruble. Meanwhile, milling rye and feed barley prices decreased. GEOGRAPHICALLY 3rd grade soft milling wheat prices grew in Ural and in Siberia (+$0.20-0.40/MT), Central and Volga Valley (+$0.80/MT), Black Soil (+$2.60/MT) and the Sou...