Illinois Soil Productivity Index Map – but it happens at such a slow rate in the natural world that soils can maintain their productivity or build up over the years. Most Illinois soils are incredibly productive for growing a multitude of . For the first time, Chicago area communities have access to a city-wide map showing how much lead is in the soil where urban food production says Andrew Margenot, assistant professor in the .











Illinois Soil Productivity Index Map Determining the Average Cash Rent Based on Productivity Index : Editorโs note: In a typical year, excellent quality Illinois farmland averages over 220 bushels of corn per acre with a soil productivity index of 133 or higher. Good quality farmland averages 200 to . A program designed to provide financial incentives to Illinois soil health into the farmland valuation process. โSo, right now you may be using the soil productivity index for estimating .





