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.