They'll probably end up getting replanted next year. The sugarbeet crops around Sidney are usually in the ground after the last thaw. Even the Canadians across the border in Saskatchewan along the Souris River have decided to skip planting this year and worry about it next year.
I’m not sure how much that will affect sugar markets, outside of the local areas, but the guys who drive truck for the beet harvest are likely working in the oil patch anyway right now.