FAIRBANK, Iowa (AP) -- A liquid propane shortage could bring even more problems to Iowa's weather-slowed corn harvest.

Some farmers are being told by energy suppliers to combine only as much corn as they have gas on hand to dry. Others have already waited days for liquid propane.

And now the National Weather Service in Des Moines says there's a chance for snow early this week in Northeast Iowa.

Harvest is more than two weeks behind schedule, and the latest government estimates say 41 percent of Iowa's corn is still standing. It's one of the wettest and largest crops in history.

Farmers are using about twice as much LP this fall. Many farmers are burning through 1,000 to 2,000 gallons a day.

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