Wheat farmers are paying up to three times as much as they did in 2020 for the fertilizer they rely on to improve their plants' growth and yield. Last December producers were prepaying $220 to $275 per ton for nitrogen applications that today cost $635 to $700 per ton, said Mike Schulte, executive director of the Oklahoma Wheat Commission. Cash wheat prices at the close of business Nov. 18 were ranging from $7.81 to $8.32 per bushel at grain elevators across Oklahoma. This time last year prices ranged from $5.03 to $5.27, he said.