Researchers at the University of Illinois Urbana-Champaign have created a dataset that contains data on agricultural productivity and farming techniques from 1888 to 2021. The researchers collected historical records on an agricultural experiment that has been continuously running since 1888 examining the impact of certain farming practices on maize. Studying long-term data from such agricultural experiments is key to developing innovative farming practices, and the dataset can help researchers assess current practices and develop new methods to improve crop yields and soil fertility.