Paul Koch
@plkoch2
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Professor, Department of Plant Pathology, University of Wisconsin - Madison. Research and outreach in turfgrass pathology and turfgrass microbiomes.
Madison, WI
Joined August 2013
We still have 7 open spots for the 2025-2026 Turfgrass Apprenticeship Program, but we anticipate the program will sell out prior to November. If you or a staff member are planning to enroll, do so soon!. For more details: To enroll:
As of today we only have 7 spots left in our 2025-2026 Turfgrass Apprenticeship Program. If you or a staff member are interested in advancing their turf career give this program a look!. To enroll:
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One of these products is working, and the other isn't. Find out which one is working by attending the Wisconsin Turfgrass Summer Field Day on August 5th!. For more details and to register:
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Final reminder that the TDL will be closed starting tomorrow while @kurtaculous and I are at the International Turfgrass Research Conference in Japan. It will reopen on July 21st. We apologize for the inconvenience!.
The Turfgrass Diagnostic Lab will be CLOSED from July 10th until July 21st so that @kurtaculous and I can attend the International Turfgrass Research Conference. Any samples received during this time will be discarded. Please plan accordingly!.
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RT @kurtaculous: Brown patch (on green) and Pythium blight (on collar) have been seen at the OJ Noer. And in true research fashion, none of….
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It has been for us in Wisconsin, now it’s working for Kerns and Co down in North Carolina. Stay tuned for more details….
Super cool study we are conducting that was the brain child of @plkoch2 and @kurtaculous. Potassium bicarbonate suppressing dollar spot quite well. Well done gentleman on this work!
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RT @UMNTurf: The July issue of our #WinterTurf newsletter is out! Read the latest work from our project about mitigating winter injury in t….
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The Turfgrass Diagnostic Lab will be CLOSED from July 10th until July 21st so that @kurtaculous and I can attend the International Turfgrass Research Conference. Any samples received during this time will be discarded. Please plan accordingly!.
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Watching the drone app in our study this morning had me envisioning a not-too-distant future where AI monitors local conditions and uses disease predictive modeling to send out drones to apply pest mgmt tools with minimal input from humans. Interesting and exciting times ahead!
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And right on cue, etiolation on bent in Madison. Almost like @PGRBill knows what he’s talking about
I'm getting ready for etiolation emails/DMs to come with the current Nebraska weather. High humidity with warm nights, clouds, and frequent light rain offer a perfect environment. The rapid growth rate is ugly and weakens the turf against pests and stress later this summer.
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If you’re not as excited about this pink patch as I am then I just feel sorry for you
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It’s a ‘bust out the big guns’ kind of weekend across the upper Midwest
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It’s been distinctly non-diseasey so far this year, but dollar spot is revved up and ready to go with this forecast for next week
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As of today we only have 7 spots left in our 2025-2026 Turfgrass Apprenticeship Program. If you or a staff member are interested in advancing their turf career give this program a look!. To enroll:
Enrollment for the 2025-2026 UW-Madison Turfgrass Apprenticeship Program that begins in November is now open! The class is capped at 22 students and we already had 5 enroll over the weekend! @djsoldat . For more info: To enroll:
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RT @UMNTurf: The June 2025 issue of our #WinterTurf newsletter is out!. Read the latest work from our project about mitigating winter injur….
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RT @USGAGrnSection: Congratulations to Zach Reineking @ZReineking on earning the E.J. Marshall Platter for outstanding partnership preparin….
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Can aerial applications be as effective as ground applications for dollar spot control on fairways? I dunno. come to our field day on August 5th to find out.
Thanks @aircropwi for partnering with us. Can drones be used for fungicide apps on turf? Spray volumes at 5 and 15 GPA. Atomizer disks=small droplets=maybe good coverage? Come check out the drone at the UW Turf Field Day on Aug 5. Still lots of kinks to work out. @plkoch2
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It wasn't a banner snow mold year for our testing by any means, but still plenty of great data from our 2024-2025 research! Give it a look as you begin to build your 2025-2026 snow mold programs. Thanks to @kurtaculous for his work managing the trials!.
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RT @UMNTurf: The May issue of our #WinterTurf newsletter is out!. Read the latest work from our project about mitigating winter injury in t….
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RT @UMNTurf: Miss our #WinterTurf Field Day? Check out our latest blog: 2025 WinterTurf Field Day Recap by @BoyledWorms for links to more i….
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