Pest Management Topics

10. IPM 101: The pinnacle of pest management quizzes (1.0 PM)

Meaghan Anderson, extension field agronomist, Iowa State University Extension and Outreach, Ames, IA; Ashley Dean, education extension specialist, Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, IA

Join this fun and fast-paced weed, insect, and disease quiz - if you dare! We will laugh, some will cry, and we'll give away a few prizes to those who prove themselves to be the most superior of IPM experts!
Session E - Wednesday, 1:00 PM - 1:50 PM
Session F - Wednesday, 2:00 PM - 2:50 PM

11. Waterhemp control: Job security for agronomic weed workers! (1.0 PM)

Bill Johnson, professor, Weed Science, Purdue University, West Lafayette, IN

Waterhemp control continues to plague the agronomic crop production industry in the Midwest. We have utilized every herbicide site of action that we have available in our industry, and have been able to achieve short-term success in minimizing yield losses. But waterhemp has quickly evolved resistance mechanism to every herbicide mode of action utilized to date. In this presentation, I will review my experiences with various control tactics, and relay my thoughts on how to improve the performance and sustainability of our currently available herbicide, tillage, and cover crop tools to stay a step ahead of this problematic weed.
Session I - Thursday, 8:00 AM - 8:50 AM
Session J - Thursday, 9:00 AM - 9:50 AM

12. Weed management in Iowa corn and soybean: What's new? (1.0 PM)

Prashant Jha, professor and extension weed specialist, Agronomy, Iowa State University, Ames, IA

This presentation will provide an pdate on new herbicide products for 2023. But it’s also time to think beyond herbicides. We’ll look at integrating cereal rye and harvest weed seed control methods for fighting the war against herbicide resistance.
Session M - Thursday, 1:00 PM - 1:50 PM
Session O - Thursday, 3:00 PM - 3:50 PM

13. Monitoring the frequency and distribution of herbicide-resistant common waterhemp populations in Iowa. (0.5 PM)

Ryan Hamberg, graduate research assistant, Agronomy, Iowa State University, Ames, IA

Waterhemp is one of the most troublesome weed species in Iowa corn and soybean fields and is rapidly evolving resistance to multiple herbicide sites of action. In the fall of 2019, seed samples were collected from 200 waterhemp populations across the state of Iowa. Each population was treated with 8 of the most commonly used herbicides in corn and soybean production. Results from this survey showcase the current status of herbicide-resistant waterhemp in Iowa.
Session C - Wednesday, 11:00 AM - 11:25 AM
Session D - Wednesday, 11:35 AM - 12:00 PM

14. Western corn rootworm resistance management: A Nebraska perspective (1.0 PM)

Jordan Reinders, postdoctoral research associate, Entomology, University of Nebraska-Lincoln, Lincoln, NE

A Nebraska perspective on western corn rootworm management, including crop rotation, insecticide use, and transgenic technology. Emphasis will be placed on western corn rootworm resistance to insecticides and Bt technology.
Session A - Wednesday, 9:00 AM - 9:50 AM
Session B - Wednesday, 10:00 AM - 10:50 AM

15. Throwing the kitchen sink at soybean gall midge (1.0 PM)

Erin Hodgson, professor and extension entomologist, Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, IA

Several scouting and management approaches for soybean gall midge have been evaluated in the midwest. This presentation will review the progress made in the last couple summers. They aren't all winners but some are viable options for the future.
Session K - Thursday, 10:10 AM - 11:00 AM
Session L - Thursday, 11:10 AM - 12:00 PM

16. Direct destruction: How to manage late-season pests (0.5 PM)

Erin Hodgson, professor and extension entomologist, Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, IA

Field crop insects cause injury in a few ways and at different times of the year. With a mix of late-season pests, like grasshoppers and spider mites, it is important to distinguish indirect from direct injury. This presentation will cover general scouting and threshold guidelines in corn and soybean.
Session C - Wednesday, 11:00 AM - 11:25 AM
Session D - Wednesday, 11:35 AM - 12:00 PM

17. Tar Spot of corn: Impact and management options for the future (1.0 PM)

Darcy Telenko, assistant professor and extension field crop pathologist, Purdue University, West Lafayette, IN

Tar spot of corn, caused by Phyllachora maydis, is a newly established and emerging disease in Midwest. Since 2018, it has had a significant yield impact on corn production. A summary of our experiences in Indiana will be presented, including an update on research, as we continue to improve our understanding of this disease and disease management options to mitigate yield loss.
Session K - Thursday, 10:10 AM - 11:00 AM
Session L - Thursday, 11:10 AM - 12:00 PM

18. A corn pathologist's view of the 2022 growing season (1.0 PM)

Alison Robertson, professor and extension crop plant pathologist, Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, IA

This presentation will review data from corn pathology research done during the 2022 growing season. Field trials were conducted at Iowa State University research farms to assess the effect of fungicides on crown rot, Physoderma node rot and foliar diseases.
Session A - Wednesday, 9:00 AM - 9:50 AM
Session B - Wednesday, 10:00 AM - 10:50 AM

19. Soybean disease management...It depends (1.0 PM)

Daren Mueller, professor and extension crop plant pathologist, Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, IA

This presentation will summarize research from the Mueller lab looking at best management practices for soybean diseases. This may include updates on fungicide use for management of diseases such as sudden death syndrome and frogeye leaf spot.
Session G - Wednesday, 3:10 PM - 4:00 PM
Session H - Wednesday, 4:10 PM - 5:00 PM

20. Tactics to manage a cereal rye cover crop ahead of corn to ensure optimum corn yields (0.5 PM)

Alison Robertson, professor and extension crop plant pathologist, Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, IA

Temporally or spatially separating a cereal rye cover crop from corn can mitigate negative effects of the cover crop on corn growth and yield, and reduce seedling disease. This presentation will review research on (i) "planting green" into cereal rye and (ii) "social distancing" corn from cereal rye.
Session C - Wednesday, 11:00 AM - 11:25 AM
Session D - Wednesday, 11:35 AM - 12:00 PM