March 10 Webinar: Cropping System Diversification is a Path to Greater Sustainability

March 3, 2021

AMES, Iowa— Learn about the benefits of cropping system diversification during the Iowa Learning Farms webinar on Wednesday, March 10 at noon.   

Dr. Matt Liebman, professor of agronomy and H. A. Wallace Chair for Sustainable Agriculture at Iowa State University (ISU), will share the results of a long-term study at the ISU Marsden Farm. The results of this study indicate that diversification of conventional corn-soybean systems with small grains and forage legumes, coupled with integration with livestock production, can allow for large reductions in the use of fertilizers and herbicides and lead to less environmental damage, equivalent profitability, improved soil quality, and higher crop productivity. 

“There’s a lot to be gained from diversifying cropping practices. Across many different countries, for many different climates and soils types, with many different crops, the general pattern is that with diversification, you maintain or increase crop yields while gaining environmental benefits,” said Liebman. “More than 80% of Iowa’s cropland is used to produce just two crops: corn and soybean. That limits what can be accomplished with regard to environmental quality. In many cases, it also limits crop yields and increases requirements for purchased inputs like fertilizer and pesticides.” 

Liebman’s research, teaching, and outreach activities focus on ways to use ecological processes for reducing reliance on fertilizers, pesticides, and fossil fuels while increasing agricultural productivity and better protecting soil, water, and wildlife. 

Webinar Access Instructions 

To participate in the live webinar, shortly before 12 pm CST on March 10: 

Click this URL, or type this web address into your internet browser:  

    Or, go to and enter meeting ID: 364 284 172   


Or, join from a dial-in phone line:  

    Dial: +1 312 626 6799 or +1 646 876 9923 

    Meeting ID: 364 284 172  


The webinar will also be recorded and archived on the ILF website, so that it can be watched at any time. Archived webinars are available at

A Certified Crop Adviser board-approved continuing education unit (CEU) has been applied for, for those who are able to participate in the live webinar. Information about how to apply to receive the credit will be provided at the end of the live webinar. 

About Iowa Learning Farms 

Established in 2004, Iowa Learning Farms is building a Culture of Conservation by encouraging adoption of conservation practices. Farmers, researchers and ILF team members are working together to identify and implement the best management practices that improve water quality and soil health while remaining profitable. Partners of Iowa Learning Farms include the Iowa Department of Agriculture and Land Stewardship, Iowa State University Extension and Outreach, Leopold Center for Sustainable Agriculture, USDA Natural Resources Conservation Service, and Iowa Department of Natural Resources (USEPA section 319) and GROWMARK, Inc


Hilary Pierce                                       Jacqueline Comito 

Extension Outreach Specialist            ILF Program Director                   

515-294-8912                                       515-296-0081