Wheat futures slid nearly one percent as the dollar index rebounded from the lowest since January 2, 2015, amid a lack of data from the US, the world's second largest economy.
As of 08:54 GMT, wheat futures due on December 15 slid 0.69% to $4.3475 from the opening of $4.3775, while the dollar index rose 0.66% to 91.69 from the opening of 91.35.
Wheat's decline comes as the dollar muscles up away from multi-year lows on short-covering, while markets expect the Russian harvest to be bigger than expected.
The outlook for Russian wheat output was raised last week by 2.2 million tonnes to 81.1 million, leading to increasing supplies in the world market and weighing on US wheat demand.