Long Term Tillage Study

The Long Term Tillage Study at Purdue was started in 1975 with the goal of assessing tillage types, rotations, yield performance, and soil parameters over time. Now in it's 46th year, the long term tillage project had provided us invaluable information on the benefits of rotation, impacts on weed and pest management and impacts on soil resilience.  

Navigating Long Term Tillage Results

We have lots of results and data from the last 45 years of research to share. Here is a brief summary of the data and where to access it. 

Introduction blog to Long Term Tillage

History and management practices through the years

Abstract and Project Goals

Individual yearly reports

Fact sheets with short summaries of topical reports


Interactive Corn Results


Abstract and Project Goals


Fact Sheets


Interactive Chart