This past fall was a challenge to get cover crops established in many areas of the state due to the dry conditions we had last fall. Because of this there was a supply of seed that over wintered in the soil. It has been brought to my attention, by a few reports across the state, that we are seeing some of the cover crop seed, that we planted last fall, finally germinated this spring, once we got the proper conditions of moisture and soil temperatures. This will not generally be a problem except in places that you planned for a winter kill of your cover crop or if you did an early herbicide treatment before the cover crop germinated. If the later is the case, do not jump the gun that you have resistance.
There is a good chance that is was not there when you sprayed your burndown. If you have questions about the situation, please feel free to contact me at boverstr@purdue.edu.
