@plkoch2

Professor, Department of Plant Pathology, University of Wisconsin - Madison. Research and outreach in turfgrass pathology and turfgrass microbiomes.

 Madison, WI
tdl.wisc.edu
Joined August 2013
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Excited to present along with a great group of researchers and practitioners about strategies for managing dollar spot without fungicides as part of STERFs 20th Anniversary Celebration! The webinar is free to attend, and more information is below: sterf.org/webinar-managing-d…

Webinar Managing Dollar Spot on Golf Courses - Stiftelsen för Forskning och Utveckling av Grönytor...

Webinar Dollar Spot on Golf Courses

sterf.org
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THE NATIONAL LEAGUE PENNANT IS COMING HOME TO MILWAUKEE #WinOurWay
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Our latest research is out investigating the impacts of fumigation on the microbiome of golf course putting greens. Lots of cool info…give it a read!
Grass Research@GrassResearchOct 13
#GrassResearch #SoilEcology #TurfManagement 🧫Amplicon‑sequencing evidence reveals fumigation suppresses both pathogens and beneficial microbes while boosting opportunistic soil taxa. @MaximumAcademic @plkoch2 @RutgersU @UWMSTP Details: maxapress.com/article/doi/10…
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Forgot to tag coauthors @TurfgrassChou and @solislemuslab
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Pretty incredible impacts of the timing of autonomous mowing on dollar spot development. On the peak disease date of Aug 12, 2026 there was a 96% reduction in DS when mowed at midnight compared to 9 AM and a 91% reduction when mowed at 3 AM. The pics below tell the story
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In a separate study funded by the International Turfgrass Research Initiative, mowing at 2-hour intervals from 8 PM to 8 AM completely suppressed DS even as the regular mowing timing had over 90 spots per 3 sq ft plot.
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You can read the full reports of these projects, and many more, at our Summer 2026 Turfgrass Pathology Research Results page. Thanks to @kurtaculous for managing all these impactful projects! tdl.wisc.edu/summer-2026-tur…
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Our latest research on the effects of methyl bromide on golf course putting green microbial communities is now out! Combined effects of methyl bromide and soil amendments on soil bacterial and fungal communities in turfgrass maxapress.com/article/doi/10…

Combined effects of methyl bromide and soil amendments on soil bacterial and fungal communities in...

maxapress.com
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Can’t thank this group enough for the work they’ve done over the summer to conduct our research and support the turfgrass industry. Congrats to PhD student Meredith Boos (far right) on claiming the annual Koch Lab Mini-Golf Championship in a thrilling playoff (sadly over me)
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Paul Koch retweeted
GCM_Magazine@GCM_MagazineSep 9
O.J. Noer, the namesake of the O.J. Noer Turfgrass Research and Education Facility at the University of Wisconsin was an early turf industry leader. bit.ly/3UIiPNh @GCSAA
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Great day and great crowd on hand for our UW Turfgrass Summer Field Day! Thanks to all the vendors and everyone who came out to support our program and see first hand the research we’re doing.
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Paul Koch retweeted
Wisconsin GCSA@WGCSAAug 4
Not sure who ordered the weather for today's @wtaturf Field Day, but they deserve a raise! Looks like a great group of vendors and attendees on hand for this annual @UWMadison turf research showcase.
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Paul Koch retweeted
Doug Soldat@djsoldatAug 3
Come out to the OJ Noer tomorrow at 8:30 (talks start at 9:15) for what is shaping up to be a great Wisconsin Turfgrass Field Day. On site registration available. @dwmarach @plkoch2 @wtaturf
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The August2026 issue of our #WinterTurf newsletter is out! Read the latest work from our project about mitigating winter injury in turfgrasses. mailchi.mp/umn/winterturf-ne… To subscribe: winterturf.umn.edu/newslette…
WinterTurf logo: a hexagon with a graphic of a partial snowflake over a grass blade. Logo reads: WinterTurf / Turfgrass Winter Stress Research.

ALT WinterTurf logo: a hexagon with a graphic of a partial snowflake over a grass blade. Logo reads: WinterTurf / Turfgrass Winter Stress Research.

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Gearing up for the Wisconsin Turfgrass Supporter Appreciation cookout tomorrow evening before Field Day on Tuesday. Looking forward to seeing lots of friends and supporters over the next couple days!
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Come learn about lawn and turf care at the Wisconsin Turfgrass Association Summer Field Day at the O.J. Noer Turfgrass Research Station from turf experts and research staff. 🌱 cals.wisc.edu/fielddays
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The UW-Madison Turfgrass Apprenticeship Program has SOLD OUT for the 2026-2027 class that starts in November. Please email me to be added to the wait list. Enrollment in the 2027-2028 class opens on March 1st, 2027. For more info visit: turf.wisc.edu/tap/

Turfgrass Apprenticeship Program

What is TAP? UW Turfgrass Apprenticeship Program Brochure The UW-Madison Turfgrass Apprenticeship Program (TAP) is a 2-step program: a 12-week, in-person educational bootcamp held in Madison, WI. a...

turf.wisc.edu
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Paul Koch retweeted
Wisconsin GCSA@WGCSAJun 11
What a great group of kids that we had from the @FirstTee program for the @TheFirstGreen event at the OJ Noer Turfgrass Research Facility! They learned about turf, soils, pests, & equipment. Thanks to @plkoch2, @djsoldat, @kurtaculous, @dwmarach, and PJ Liesch for helping out.
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Celebrating 100 years of Milorganite wouldn’t be complete without a shoutout to “Mr. Turf” himself, O.J. Noer 🌱 His work helped prove what great turf can really look like—and set the standard for lawns ever since. Here’s to the legacy behind the green 💚 #Milorganite100 milorganite.com/blog/milorga…
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Paul Koch retweeted
GCSAA
@GCSAAApr 24
Only TWO DAYS LEFT! Get your bids in on your dream round up for grabs today: auction.biddingforgood.com/a… #Rounds4Research #Golf
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