Short corn is seen in one of farmer Cameron Sorgenfrey's fields, Monday, Sept. 16, 2024, in Wyoming, Iowa. (AP Photo/Charlie Neibergall)

Bayer Crop Science spokesman Brian Leake takes a photo as he stands among short corn in a field, Monday, Sept. 16, 2024, in Wyoming, Iowa. (AP Photo/Charlie Neibergall)

Cameron Sorgenfrey walks among short corn stalks in one of his fields, Monday, Sept. 16, 2024, in Wyoming, Iowa. (AP Photo/Charlie Neibergall)

Cameron Sorgenfrey holds an ear of corn from a short corn stalk in his field, Monday, Sept. 16, 2024, in Wyoming, Iowa. (AP Photo/Charlie Neibergall)

Cameron Sorgenfrey talks about short corn as he stands in his field, Monday, Sept. 16, 2024, in Wyoming, Iowa. (AP Photo/Charlie Neibergall)

Cameron Sorgenfrey holds a corn stalk as he walks past one of his fields, Monday, Sept. 16, 2024, in Wyoming, Iowa. (AP Photo/Charlie Neibergall)

Cameron Sorgenfrey holds a tall corn stalk next to a short corn stalk along one of his fields, Monday, Sept. 16, 2024, in Wyoming, Iowa. (AP Photo/Charlie Neibergall)

Republican presidential nominee former President Donald Trump arrives at a campaign event at Wilmington International Airport in Wilmington, N.C., Saturday, Sept. 21, 2024. (AP Photo/Chris Seward)