Effect of Cover Crops and Nitrogen Application Timing by Illinois NREC | Jan 22, 2017 | Technical Information | 2 comments Learn more about the agronomic, environmental, and economic aspects of cover crops from Dr. Shalamar Armstrong. 2 Comments Chad Bell on February 27, 2017 at 2:51 am Promising and practical on farm research. Keep it coming! Julie Armstrong on March 2, 2017 at 2:50 am Thanks Chad! Always looking for ways to get this great research out to producers! We’re working on our Annual Report now so keep an eye out for that!