When you look at all of the information, the solution is obvious. You have to apply nitrogen to some fields to get the highest soybean yields
by PAT LYNCH
While corn yields are increasing due to genetic improvements and changes in management, and wheat yields are mainly increasing due to the use of more fertilizer and more disease control with fungicides, soys are stuck in a pattern of slow yield increases.
While we have made some strides with earlier planting, yield increase due to better genetics has been small. In the past 10 years, a lot of breeding effort has been put into developing glyphosate tolerance in soys, but there have been few other breeding advances to give higher yields.