Illinois might have been known for growing clover and cranberries rather than corn and soybeans if farmers in the early 1900s hadn't followed recommendations from University of Illinois Extension agents to apply lime to the state's highly acidic soil.
Demonstrations at agricultural experiment stations and on farmers' fields across the state showing the benefits of using lime as a soil additive convinced farmers to use lime to balance the pH, making it possible to produce abundant crops of corn, soybeans, alfalfa, and other pH-sensitive plants.
"Lime is made of calcium carbonate, which is also an ingredient in cement, so farmers feared using it," says Robert Hoeft, U of I Director of Extension in the College of Agricultural, Consumer and Environmental Sciences. "They thought it would make the soil hard."
Extension units throughout Illinois are currently celebrating the 100-year anniversary of the 1914 signing of the Smith-Lever Act that established cooperative extension services. A centralized interactive website has been created with photos, Extension highlights, a 100-years game, and Pinterest accounts. The site welcomes people to upload photos and comments to help document the 100-year legacy of University of Illinois Extension. Visit web.extension.illinois.edu/100yrs.
"Those who were active in those first years of Extension in 1914 would be amazed at where we are today," Hoeft said. "And I can't begin to envision where we'll be 100 years from now.
According to Hoeft, the use of lime is just one example from the past 100 years of the value of Extension whose mission is to bring research-based information to the public. Hybrid corn was another example.
"The process to produce hybrid corn was created by university scientists and passed on to companies to grow and market the seed to farmers," Hoeft adds. "Extension played a large part in getting farmers to adopt the use of hybrid seed by establishing demonstration plots in farmers' fields. Planting these demonstration plots near well-traveled roads gave farmers the opportunity to visit them to observe the difference in disease pressure and ultimately yield between open-pollinated and hybrid corn."