Milling wheat prices started decreasing at the Ukrainian Black Sea (UBS) ports, mainly due to the exhaustion of export potential and the resultant lower demand from traders. Another reason is that new harvest wheat will enter the market in about one month, so those traders and processors with sufficient stocks prefer to wait. Russian Grain Markets Market Trends: 16-20 May 2016 Grain prices, especially wheat and corn, continued to increase in RUB expression (but decrease in USD expression because of the weaker ruble) due to declining stock offers from the 2015 harvest. GEOGRAPHICALLY 3rd grade soft milling wheat prices grew in the South (+$3.20/MT), Central and Black Soil (+$2-2.20/MT), Volga Valley and Ural (+$0.70-0.80/MT), and Siberi...