OREGON, Wis. – This one shows “bubble kernels,” the classic symptomology of a late glyphosate application.
It could be that the yellowing is the result of a combination of factors, which can make it more difficult to pin-point a solution to the problem. The best way to find out is to get out in the field and take a look.
This photo shows blunt ears that resulted from a late glyphosate application:
Photo source: Ohio State University Extension Agronomic Crops Network