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 Â°F. Seed will absorb about 30 percent of its weight in water, and temperature does not affect this process much.However, this is different than radicle (root) and coleoptile (shoot) growth; their growth is correlated with soil temperature. Measure soil temperature at corn planting depth (1.5 to 2 inches). 2  If the early morning temperature (the low) is above 50 degrees (F), then consider planting. 3  Check the forecast for assurances that the soil temperature of 50 degrees (F) or above is likely to hold for 3-5 days.