Updated January 2015. The increased cost of health insurance is a central fact in any discussion of health policy and health delivery. As annual premiums edged beyond $16,800 for an average family, costs are blamed for rising uninsured and under-insurance..
Figure 1. Corn growth and temperature levels. Corn will germinate and grow slowly at about 50 F (10 C), but the average first spring planting dates across the U.S. usually begin when the average air temperatures reach 55 F (13 C) and soil temperature at seed depth is favorable for seedling growth.
In general, corn should be planted when soil temperatures are near 50 F. Seed will absorb about 30 percent of its weight in water, and temperature does not affect water imbibition much. This is different than radicle (root) and coleoptile (shoot) growth; their growth is correlated with soil temperature.