Extreme heat taking toll on Iowa crops

Extreme heat taking toll on Iowa crops

Yield potential could fall as temperatures heat up.

Iowa State University Extension field agronomist Angie Rieck-Hinz says this week’s hot conditions combined with dryness in some areas won’t help grain fill.

“When we stay extremely warm at night like we have been, those plants tend to burn through that sugar. And then that sugar does not translate into carbohydrates in that kernel, so we get a lighter test weight when we get these prolonged periods of heat.”

She tells Brownfield most soybeans are past flowering and done putting on pods.


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