The corn harvest is already underway, pushed ahead by this summer's heat.
Pioneer Hi-Bred began harvesting seed corn in some locations a week ago.
By Wednesday, corn harvest at their Mount Pleasant operation was 20 percent complete, and the crop's quality is better than expected, said manager Ben Moore.
"I think we'll be done this year by the end of September," said Bill Tomlinson, director of North American seed corn supply management for Des Moines-based Pioneer.
Others expect to begin their harvest early next month. On average, the harvest is expected to begin up to 10 days earlier than normal this year, experts said.
An early harvest means trucks, processing equipment, supplies and seasonal workers must be ready sooner than normal, Tomlinson said.
While this summer's heat has helped push the harvest ahead of schedule, drought has damaged crops in parts of eastern and southeast Iowa. Northern Iowa crops look better. "Every indication is we'll have adequate supplies of seed corn," Tomlinson said.