From Reuters:  *DJ Trump to Impose Additional 10% Tariff on Chinese Goods  Trump to Impose Additional 10% Tariff on Chinese Goods on Sept. 1 * Trump Describes New Levies as 'Small Additional Tariff' on Remaining $300 Billion of Chinese Goods * Trump: 'We thought we had a deal with China three months ago, but sadly, China decided to re-negotiate' * Trump Says China Has Failed to Buy Larger Quantities of Agricultural Products, Block Fentanyl Shipments * Trump Says Next Round of Trade Talks With Beijing Are Still on Track for September   This news has caused the markets to break sharply lower, with December corn down 7 3/4 cents, November soybeans off 15 cents, and September SRW wheat down 10 1/2 cents. ...