University of Minnesota Extension agronomist Jochum Wiersma does not think the spring cereals should have much, if any, frost damage from last week. Wiersma is concerned about rye. “The rye is about to start heading. In Crookston, there were no signs of any frost injury, but in Roseau County, Minnesota, temperatures dipped down to 26 to 27 degrees, and there is a risk of some sterility. It’s difficult to see now. The rye will shed pollen later on, whether or not that will still be viable is hard to say, until seed set.” Wiersma says we’ll see how much ergot pops up later on. Here are the crops at greatest risk of frost and freeze damage. “The risk is dry beans, sugarbeets, soybeans and sunflowers in the Red River Valley and in Minnesota, up to Lake of the Woods County.”
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