Pest Management Field Day-Harrison County Pilot

Tuesday, July 9, 2019 - 10:00am to 1:00pm
Event Type: 

2018 Harrison County Field day photo of group in fieldThe Harrison County Pest Resistance Project will hold a field day Tuesday, July 9th.  Join us from 10:00 am to 1:00 pm to observe field trials, which include both herbicide and fungicide trials, at the farm operated by Larry Buss southwest of Logan. This event is free and open to the public. The Iowa Cattlemen’s Association will be grilling lunch for participants.

Current and future management of waterhemp, marestail, giant ragweed, and Palmer amaranth is a concern for area farmers. Ten herbicide programs will be available for comparison to evaluate success and implications for resistance management. Additional agenda details follow. 


  • Introduction by Larry Buss, farmer, Harrison Project lead, president of the Harrison and Crawford County Corn Growers Association
  • Discussion of demonstration site observations by Brent Wiersma, BASF, and John Swalwell, Asgrow/Dekalb
  • Presentation of fall 2018, 2019 herbicide applications by Jason Sporrer, Agriland FS, and Matt Handbury, Heartland Coop
  • Weed seed collection and resistance screening results and Palmer amaranth identification by Mike Witt, Iowa State University Extension and Outreach field specialist

New for 2019

Diseases are another threat to your yield. This year, additional trials are planned to demonstrate fungicide effectiveness against frog eye leaf spot and Septoria brown spot. Come hear the latest info about disease resistance in Iowa. 

Location: Immediately northeast of the intersection of Niagara Trail and 262nd Street, which is about 1.5 to 2 miles southwest of downtown Logan.