Summer Wheat Harvest In Ukraine [Getty Images]

Deere & Co. combine harvesters create clouds of dust as they harvest a field of wheat on a farm operated by Kernel Holding SA in Varva, Ukraine, on Tuesday, July 26, 2016. Russia's wheat-export prices resumed declines last week amid bumper crops in Black Sea nations including Ukraine and Romania, according to the Institute for Agricultural Market Studies, or Ikar. Photographer: Vincent Mundy/Bloomberg via Getty Images

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