USWBSI Abstract Viewer

2023 National Fusarium Head Blight Forum


Opening Session Speaker

Invited Presenter

Thoughts from a Fusarium Rookie

Authors & Affiliations:

Dan Anderson 1
1. Anderson Wheat Farms, Haxtun, CO
Corresponding Author: Dan Anderson, dla.awf@pctelcom.coop

Corresponding Author:

Dan Anderson
dla.awf@pctelcom.coop

Abstract:

Anderson Wheat Farms operates out of Haxtun, Colorado, providing high quality wheat seed to the state, region, and country. We are a certified seed dealer of PlainsGold wheat varieties developed by Colorado State University, as well as Kansas Wheat Alliance developed by Kansas State University, and Westbred. There are many factors that limit grain yield and profitability of wheat in Colorado. On a yearly basis, drought stress is more of a certainty than not, and stripe rust, other rust pathogens, and viruses vectored by wheat curl mite, can all have economic impact if not properly managed through resistant varieties or chemical and cultural control. Over the last decade, the wheat stem sawfly, has taken a toll on Colorado wheat, causing significant yield loss, lodging, and loss of residue for soil and water retention in our no-till system, with greater than $50 million in economic impact annually. The adoption of semi-solid stemmed varieties made available through significant breeding efforts by public and private programs has helped to reduce its impact. But with every year comes something new and in 2023, that something was Fusarium head blight. Colorado plants just north of 2 million acres of wheat per year, with approximately a third of those acres sown directly into corn residue. However, with a statewide average precipitation of less than 6 inches during the critical months of May-July, the environment is rarely conducive to FHB development. Near record rainfall was recorded during the late spring of 2023, with the 8th wettest June on record providing ideal conditions for the development of scab during flowering. This wet pattern continued into the summer, extending the growing season, and providing more time for scab development. However, it was not until post-harvest that the impacts of scab became most apparent, both at the elevator and from a seed certification perspective, where FHB impacted seed germination and required additional conditioning and seed treatment to improve seed viability. A season like this left this wheat grower with more questions than answers. This presentation will lay out my experience with scab, lessons learned, and questions to be answered. 


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