On the morning of September 13, 2014 we received temperatures that were 32°F or less creating frost on windshields, lawns and plants.
Did this frost kill corn and soybean plants? Since were getting close to an election the answer is yes and no.
In most cases we still have a crop canopy and good soil moisture that retained the heat from the canopy and soil. The canopy and higher soil temperature did not allow the frost to get down further into the canopy. However the frost may have killed the top portion of the plant if the temperatures were 28°F or less.