Michigan Corn Planted April 13, 2012, progress on May 8 following freezes and emergence.

Update video on April 13, 2012 mid Michigan planted corn. The corn was planted at 36, 000 population into mid 60's degree soil, and a warm rain following planting had all of it germinated and growing before we began a 2 week cold spell. During this cold period, we had several hard freezes before emergence, including a record cold 25.3 degree temp on the morning of April 30. Soil temp that morning at the spike depth of 1/2" was 32 degrees, and at 1-1/2" depth soil temps measured 38-40. With a quick warm-up, all of it had emerged within 3-5 days of the freeze, with very little apparent damage.
After nearly 3 weeks in the ground, I was pleased that most of it emerged within 48 hours of each other, with a few stranglers extending that to 72 hours. I measured the emerged population in a few places today at around 32-35,000.