New York, United States | AFP Wheat prices tumbled Friday, retreating to levels last seen prior to the Russian invasion of Ukraine following a landmark agreement to unblock Ukraine’s Black Sea grain exports. In Chicago, the price of wheat for delivery in September dropped 5.9 percent to $7.59 per bushel, which is equivalent to about 27 kilograms and the lowest close since Russia invaded its neighbor on February 24. On Euronext, wheat prices for delivery […]