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.
Corn Planting Dates, Populations and Seed Spacings The suggested planting dates for corn range from late March to May 1 in southeastern Kansas (Zone 4), to April 25 to May 20 in Zone 1 (Table 5). As with the other crops, the suggested final corn populations are lower in western areas and increase as one moves eastward (Table 6). Corn planted under limited irrigation systems will have lower plant populations than corn under full irrigation systems.