August 19, 2016 The 2016 corn yield survey was completed August 18 by the Sangamon County, Illinois Farm Bureau. The associated picture has results by township from the survey. Related Content Handing Off Your Business: The Future of Your Business Without YouSeptember 4, 2019 Late Planting Checklist and Late/Prevented Planting Info Website June 4, 2019 Excessive rainfall as damaging to corn yield as extreme heat, droughtMay 1, 2019