Thank you to everyone that attended The Pioneer Agronomy Hour on March 16th Hosted by Pam Jahnke.
Tar Spot: A Newer Corn Disease to Wisconsin
By Scott Rowntree, M.S., C.C.A. – Pioneer Field Agronomist
Tar Spot (Phyllachora maydis) is the newest fungal pathogen of corn in the US and was first found in Wisconsin just four years ago. Tar Spot was initially thought to only cause cosmetic damage but not yield loss. In August 2018, however, Southern Wisconsin became the epicenter of a multi-state Tar Spot outbreak that resulted in rapid canopy infection and death of entire corn fields in just 7-14 days, causing severe yield loss (25-50+%) in more susceptible hybrids. Yes, certain fields in Southern WI experienced over 100 bu/ac yield losses due to this disease! During the 2019 & 2020 growing seasons, Pioneer Field Agronomists have continued to monitor the spread of Tar Spot in the state and conducted field trials to learn how to successfully manage the disease to help growers combat this potentially very destructive pathogen.
To read the full article by Scott Rowntree, click right here!
The Rollercoaster of Weed Management
By Bob Berkevich, M.S., C.C.A. – Pioneer Field Agronomist
Weed management over the past 30 years has been a roller coaster with a lot of ups and downs. We rode the highs of herbicide-resistant crops for a while, and it was a blast! Fast forward to 2021, and herbicide-resistant weeds have us feeling a little uneasy about the next rides we will go on.
To read the full article by Bob Berkevich, click right here!
Battling Corn Rootworm in Wisconsin
By Will Wynn, C.C.A – Pioneer Field Agronomist (Southwest Wisconsin)
Corn rootworm. A pest which causes over a billion dollars’ worth of damage annually across the United States and has crept up in numbers in southern Wisconsin as of late. More specifically, Western Corn Rootworm, which is typically the most damaging of the two species in Wisconsin. Corn rootworm populations have been on the rise the past three years, especially in more of the concentrated long-term corn-on-corn growing areas across the state.
To read the full article by Will Wynn, click right here!