Most corn handling Wisconsin’s heat wave – Voice Of Muscatine

Most corn handling Wisconsin’s heat wave

A University of Wisconsin expert says the recent hot temperatures have not caused major problems for the corn crop in his state.

Joe Lauer tells Brownfield much of Wisconsin received up to four inches of rain over a week ago, but the heat will slow down grain fill. “The crop begins to shut down at about 94 degrees, 90 to 94 degrees Fahrenheit, and that’s where photosynthesis cannot keep up with the respiration of the plant.”

Lauer says if the yield is expected to be 200 bushels per acre, the plants are adding an average of five to six bushels per day, but that slows down when it’s very hot.

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