Iowa corn planting progress
Iowa corn planting progress, 1975–2006. Compiled from National Agricultural Statistics Service data.
This image appears in the following article:
Iowa corn planting progress
[1]
Source URL:
http://www.ipm.iastate.edu/ipm/icm//ipm/icm/node/632
Links:
[1] http://www.ipm.iastate.edu/ipm/icm/2006/7-31/early_planting.html
