Iowa corn and soybean fields are starting to show the adverse effects from the very heavy rains and strong winds contained in a series of thunderstorms that rumbled around much of Iowa last week, farmers and agronomists said.

"We need some sunshine and heat now. We’ve had all the wet weather we need," said Bill Shrock, Des Moines County Farm Bureau president, who farms near Mediapolis.

Mark Licht, Iowa State Uni­versity (ISU) Extension agronomist, said that overall, Iowa corn and soybeans remain in good shape. But the saturated fields, as well as wind damage in some places,...