Agriculture - Rolling hills of fully tasseled grain corn in early morning light / Northeast Iowa, USA.

Agriculture - Contour strips of mid growth tasseled Summer grain corn and windrowed alfalfa in early morning light / Northeast Iowa, USA.

Agriculture - A farmer walks through his early growth grain corn field several weeks after planting, inspecting the young crop / Central Iowa, USA.

Agriculture - Early growth minimum tillage soybean field showing corn stubble from the previous year / Central Iowa, USA.

Agriculture - Early growth grain corn plant at the three-leaf stage showing the root structure / Iowa, USA.

Agriculture - A farmer looks out across his early growth grain corn field several weeks after planting, inspecting the young crop / Central Iowa, USA.

Agriculture - A farmer looks out across his early growth grain corn field several weeks after planting, inspecting the young crop / Central Iowa, USA.

Agriculture - Post-emergent herbicide being applied to an early growth grain corn field by a John Deere sprayer in late afternoon light / Iowa, USA.

Agriculture - A farmer looks out across his early growth grain corn field several weeks after planting, inspecting the young crop / Central Iowa, USA.

Agriculture - Post-emergent herbicide being applied to an early growth grain corn field by a John Deere sprayer in late afternoon light / Iowa, USA.

Agriculture - A mid growth soybean field (l. ) grows next to a mid growth grain corn field (r. ) / Iowa, USA.

Agriculture - A farmer looks out across his early growth grain corn field several weeks after planting inspecting the progress of his crop / Central Iowa, USA.

Agriculture - Early growth grain corn plants in early morning light / Mississippi, USA.

Agriculture - A field of grain corn stalks and stubble in late afternoon light with a farmstead in the distance / near Nerstrand, Minnesota, USA.

Agriculture - High view looking down on rows of tasseled mid growth grain corn plants in early Summer / near Yazoo City, Mississippi, USA.

Agriculture - Chemical application, side-dressing early growth corn, nitrogen injection and cultivation, equipment close-up / Illinois, USA.

Agriculture - Mid growth grain corn strips interspersed with hayfields utilizing the contour strip method of growing on rolling hills to reduce the effects of erosion, with a farmstead in the distance / near Arcadia, Wisconsin, USA.

Agriculture - Rolling hillside field of mature, harvest ready soybeans in Autumn with a farmstead in the distance / near Chippewa Falls, Wisconsin, USA.

Agriculture - A farmer enters crop data into his laptop computer while standing in his mid growth soybean field, with a center pivot irrigation system, corn crop and grain bins in the background / near Hoffman, Minnesota, USA.

Agriculture - Field of early growth soybeans in late afternoon light with farmsteads in the distance / Janesville, Wisconsin, USA.

Agriculture - Cross section of ear of mature grain corn showing kernel depth and milk line / Wisconsin, USA.

Rows of early growth grain corn plants backlit by the sunrise, near Truman; Minnesota, United States of America

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

Agriculture - Early growth grain corn field with a farmstead in the distance / Northeast Iowa, USA.