PACE Turf rumors, news
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PACE Turf news, rumors
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• Hot Takes on Turf
I was a guest on the USGA Green Section podcast for an episode with the title Hot Takes on Turf with Dr. Micah Woods. Host John Petrovsky asked a range of questions that I found quite interesting, and I hope you will too. Here are links to more information about a few of the things we discussed. Blog post about what not to do, thinking of advice I got from Stan Zontek at the 2010 U.S. Open abou...2025
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• Calculating average daily temperature
Did you know there are different ways to calculate the average daily temperature? A new PACE Turf update discusses this. In that update, I looked at the daily minimum and maximum method, and compared it to the average of hourly measurements method. I checked that for Maui, Whistler, and Tokyo. ...2025
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• Explaining GvX: growth versus expected growth
I recorded a screencast of my seminar about the Turf GvX that I gave at Harrogate in January. You can watch it here. For those wanting spreadsheets that show the calculation, you can get those at PACE Turf’s GvX reference page. Also, see the seminar handout page for this presentation. I’ve had a few questions about predicting clipping volume from the GvX. This is simply a matter o...2025
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• Niagara Falls February 2025
Presentation information coming soon Notes Get all the latest turfgrass information from ATC through our email newsletters. ATC newsletter sign-up Find reference information, site-specific weather and climate appraisals, and weekly updates at PACE Turf. PACE Turf For more about ATC’s soil testing services, and example reports, see our soil tests page. See more about OM246 testing, in...2025
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• Turfgrass nutrition (and related) research
Turfgrass nutrition (and related) research The slides as a pdf file are available for download here. These links have information related to our discussions: Turner & Waddington’s 1978 article: Survey of soil testing programs for turfgrass Xu et al. (2025): Potassium fertilization effects on dollar spot of annual bluegrass and creeping bentgrass PACE Turf university research location climat...2025
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• GCSAA Conference and Trade Show 2025
Get all the latest turfgrass information from ATC through our email newsletters. ATC newsletter sign-up Find reference information, site-specific weather and climate appraisals, and weekly updates at PACE Turf. PACE Turf See the Notes section below for even more ways to get information and updates from me. Harmonizing Turf Growth, Soil Organic Matter, and Surface Performance Slides and add...2025
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PACE Turf injury and suspension
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• Converting clipping volume to dry weight
One of the reasons I didn’t pay attention to clipping volume numbers in my youth was my failure to realize that the volume of clippings is related to the dry weight of clippings. Those who don’t bother measuring clipping volume today occasionally mention that the volume won’t be related to the weight. “Too many variables for this to work,” they might say, and then wil...2024
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• Growth Potential. What does it mean????Winter Injury to Zoysiagrass in Poorly Draining AreaOver the last weekend a few questions were asked about the condition of the Zoysiagrass fairways. Meyer Zoysiagrass is a warm season grass that has excellent cold tolerance, however in shaded, high traffic and low lying areas where surface drainage is inadequate the turfgrass can be impacted negatively by cold weather. Many of the thi...2023See also Pace Turf
Timeline
- 2025
"Find turfgrass reference information, site-specific weather and climate appraisals, and weekly updates at the PACE Turf information center." - 2024
"I wrote about the importance of effective height of cut in this PACE Turf update." - 2023
"Check PACE Turf for site-specific weather alerts and climate appraisals See this list of turfgrass Shiny apps Read about other uses for the GP avatar"
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PACE Turf stats and results
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• Hot Takes on Turf
2025
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• Calculating GP
The PACE Turf temperature-based growth potential, or GP, is a utility function that takes the input of average air temperature, and gives an output of GP on a scale of 0 to 1, or 0 to 100%. This isolates the potential effect of temperature on turfgrass growth, and conveniently expresses that potential on a scale we can all understand. The growth potential equations have some constants and one vari...2024
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• Converting clipping volume to dry weight
2024
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• Accumulation rate of soil organic material
When you do OM246 testing to find the total organic material at known depths of the rootzone, you can use those test results to find the net accumulation rate of organic material in the rootzone. This is a useful value to know, because you can then: adjust sand topdressing with more precision check if your grass and growing environment and management practices are causing organic material to accu...2024
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• Two weeks in August
I worked at golf tournaments in consecutive weeks, first at Hazeltine National Golf Club during the U.S. Amateur Championship, and then flew to Japan to work at Keya Golf Club for the KBC Augusta Tournament. If you’d like to see some photo galleries from my camera from these tournaments, scroll to the end and have a look at the embedded Instagram photo galleries. ...2024
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• SUNY Delhi MLSN discussion
One of the things I’ve tried to explain about MLSN is that simply taking a soil test and comparing the result to the MLSN value is not enough. One also needs to consider how much of an element the grass will use. In a presentation for the Brookside Labs Amplify Network on April 25, and then a discussion with turfgrass students at SUNY Delhi on April 26, I explained why this is, and shared th...2024
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• Palmetto GCSA Education Meeting
Slides You can download the slides here: Systematic improvement of golf course conditions, PDF file Systematic improvement notes I started off with this as an introduction: For a system of putting surface management, we can start with measuring the playing conditions that are produced. That’s going to involve the stimpmeter measurement, possibly an assessment of how smooth the surface is,...2024
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• Light and GP, again
A question that comes up again and again is whether the PACE Turf growth potential (GP) would be improved by also accounting for light. Grass growth—plant growth of any type, actually—is influenced by more than temperature. The primary factors affecting plant productivity are temperature, light, leaf N content, and plant water status. In the case of turfgrass, two of these factors are ...2024
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• 2024 Canadian Golf Course Management Conference
Slides You can download the slides here: Systematic improvement of golf course conditions, 3.1 MB PDF file 10 Things I’ve Learned About Clipping Volume, PDF file slides posted soon Systematic improvement notes I started off with this as an introduction: For a system of putting surface management, we can start with measuring the playing conditions that are produced. That’s going to inv...2024
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• Measuring effective cutting height with a laser
I think we’ve all seen the prism gauges that can be used to check the effective height of cut. Well, they sort of can be used for that, but there’s a catch. If you move your eyes just a little bit, that changes the angle at which you are lining up the tips of the grass blades with the measurement scale. Because of that, there’s always a bit of uncertainty with that measurement. I...2024
PACE Turf parents, kids, wife / husband, girlfriend / boyfriend
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• Nitrogen harvested in clippings: calculation update for 2024
I use a method based on clipping harvest and normal leaf nitrogen content to find the estimated nitrogen harvest. I adjust this based on species, because there are differences in the clipping volume to dry mass conversion based on what type of leaf we are working with. There are also differences between species in leaf N content, as you’ll see in the posts listed below. My explanation of thi...2024
Top PACE Turf news
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• Measuring effective cutting height with a laser
2024
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• Palmetto GCSA Education Meeting
2024
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• Hot Takes on Turf
2025
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• Calculating average daily temperature
2025
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• Explaining GvX: growth versus expected growth
2025
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• Niagara Falls February 2025
2025
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• Turfgrass nutrition (and related) research
2025
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• GCSAA Conference and Trade Show 2025
2025
Golf Fame Ranking
- 1. Rory McIlroy
- 2. Scottie Scheffler
- 3. Jon Rahm
- . . .
- 164. PACE Turf
PACE Turf schedule, game
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• Palmetto GCSA Education Meeting
2024
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• 2024 Canadian Golf Course Management Conference
2024
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• Monthly maximum N or annual maximum N
I sometimes talk about maximum N. You may have heard me refer to the standard amount of N. I discussed that with Michael Bekken in this ATC Doublecut episode. What do I mean by these quantities of N? There was a question on the ATC YouTube channel about that, asking whether my mentions of a 30 kg/ha or 3 g/m2 value for Poa annua is a monthly or annual amount. The comment might have been deleted, o...2023