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CROP PROBLEMS: Learn what to look for above- and belowground this growing season. Because a single symptom may result from different causes, it’s a good idea to collect as much information as possible about the field before attempting a diagnosis.

Diagnose corn, soybean issues

At ISU’s Field Diagnostic Clinic, you’ll learn how to properly identify and diagnose various problems this growing season.

Crop advisers, agronomists and agribusiness professionals are encouraged to take a day this summer to learn about and improve their knowledge of diagnostics and identification of common issues in corn and soybean fields. The Field Diagnostics Clinic, hosted by Iowa State University Extension July 12, will include topics such as: herbicide injury identification, Palmer amaranth, nutrient deficiencies and fertilizer injuries. The clinic will be at the Field Extension Education Lab at Boone in central Iowa.

“The program is scheduled for mid-July, which is an advantage for crop advisers who attend because they’ll be able to see and learn to identify issues that will occur throughout the growing season,” says Warren Pierson, program coordinator. “Most issues we discuss at the clinic will be current topics or issues that may show up in July and August.”

What went wrong, and why?
ISU Extension cropping systems agronomist Mark Licht will lead two discussions: “Digging for issues in corn: What went wrong?” and “What went wrong with these soybeans?” Licht will take the group out to the demonstration plots to explain what to look for above- and belowground when assessing a corn crop for issues. The soybean discussion will be centered on the risks of early soybean planting and reduced populations that could lead to frost damage and reduced stands.

ISU Extension plant pathologists will help you learn about common corn diseases that are appearing or are expected to appear based on the growing conditions this summer. Alison Robertson’s presentation is titled “Corn diseases and how to tell them apart.” Daren Mueller will discuss how to use field guides to help diagnose soybean diseases in his presentation: “How to use ‘A Farmer’s Guide to Soybean Diseases’ to identify soybean issues this year.” Those who attend the Field Diagnostic Clinic will receive a 50% discount on “A Farmer's Guide to Soybean Diseases” for a purchase price of $15.

“We have a great lineup of common issues that occur in corn and soybean production,” says Pierson. “One topic that agronomists, crop consultants and farmers will find of particular interest is Palmer amaranth. ISU Extension weed management specialist Bob Hartzler will explain and demonstrate Palmer amaranth identification and compare it to other amaranth species.”

Register by July 5
The Field Extension Education Laboratory is at 1928 240th St., Boone. Check-in will begin at 8:30 a.m. on July 12, with opening comments at 8:55 a.m. The clinic will adjourn at 4:30 p.m.

Advance registration is required to attend this clinic. Registrations must be received by midnight, July 5. Registration is $125 and includes refreshments, lunches and course materials and publications. Additional workshop information and online registration with credit card is online.

Interested in crop management during the mid- to late-growing season? A Crop Management Clinic will take place the next day, July 13, at FEEL. Visit the information page if you’re also interested in attending the clinic.

For assistance with registration, receipts, cancellation or questions on the status of your registration contact ANR Program Services at 515-294-6429 or [email protected].

Source: Iowa State University


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