The infection is a harmful fungus that affects corn and was first discovered in the southern United States before it traveled north to Indiana.
About half of the state's corn crop has been planted.
Indiana farmers are harvesting a record amount of soybeans, but those gains are being offset by lower than expected corn yields.
As fall approaches, farmers are preparing to harvest their crops, but corn growers in the state might be disappointed in their yields this year.
Drought wrecked Indiana's corn and soybean crops last year, but better conditions this summer could increase yields and lower food prices.
The Secretary of Agriculture says the drought alone, is not enough to cause a big spike in food prices.