Agriculture - Ethanol production plant. Corn being unloaded from a grain truck / Iowa, USA.

Agriculture - A John Deere combine (model 9670 STS) harvests mature grain corn in late afternoon Autumn light / Southern Iowa, USA.

Agriculture - Large field of healthy early growth grain corn plants / Central Iowa, USA.

Agriculture - A John Deere combine (model 9670 STS) harvests mature grain corn in late afternoon Autumn light / Southern Iowa, USA.

Agriculture - A farmer stands next to his mature grain corn crop inspecting a harvest ready ear of corn / Iowa, USA.

Agriculture - A John Deere combine (model 9670 STS) harvests mature grain corn in late afternoon Autumn light / Southern Iowa, USA.

Agriculture - A grain corn seedling emerges from the soil shortly after spring planting / Central Iowa, USA.

Agriculture - A farmer, leaning on his truck an inspecting an ear of corn in his hand, looks out across his field of partially harvested mature grain corn / Iowa, USA.

Agriculture - A farmer, leaning on his truck inspects an ear of corn in his hand, with his field of partially harvested mature grain corn in the background / Iowa, USA.

Agriculture - A farmer walks along a row of partially harvested mature grain corn plants in Autumn while inspecting his crop / Iowa, USA.

Agriculture - A farmer inspects a mature ear of grain corn, with his field of partially harvested corn in the background / Iowa, USA.

Agriculture - A farmer walks along a row of partially harvested mature grain corn plants in Autumn while inspecting his crop / Iowa, USA.

Agriculture - Mature, harvest ready, ears of grain corn left on the ground after the harvest / near Yazoo City, Mississippi, USA.

Agriculture - Closeup view of a mature ear of grain corn with the husk partially pulled away to reveal the kernels / Mississippi, USA.

Agriculture - Closeup view of an immature ear of grain corn with the husk and silk pulled back / Mississippi, USA.

Agriculture - Farmer husband and wife pose together in a partially harvested grain corn field in Autumn / near Sioux City, Iowa, USA.

Farmer husband and wife pose together in a partially harvested grain corn field in Autumn, near Sioux City; Iowa, United States of America

A farmer and his young daughter walk hand-in-hand through his farm yard with a grain bin in the background, near Sioux City; Iowa, United States of America

Close up of farmer inspecting an ear of corn; Port Republic, Maryland, United States of America

Agriculture - A hand holding a kernel of mature grain corn / Iowa, USA.