Diesel fuel could become more expensive this fall, right in the middle of harvest, says Tony Headrick, with CHS Hedging at Inver Grove Heights, Minnesota.

He says planned maintenance at refineries could cause reduced volumes of diesel and prices could rise by 15 to 30 cents per gallon.

With cash-cropping margins already tight, topping off diesel in on-farm tanks in the next few days or weeks is prudent business planning, he says.