PACE Turf rumors, news
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PACE Turf news, rumors
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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
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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• Summer assessment with ΔGP
I’ve written before about ΔGP. That’s read as “delta G P” and it is the difference in the cool-season and the warm-season growth potential. Specifically, it is the cool-season GP first, then the warm-season GP is subtracted from that. When the ΔGP is a negative value, that means the temperatures are much more suitable for warm-season grass than they are for cool season gras...2024Continue with Hong Kong
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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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• Maps of average temperatures in the USA
You may have seen the maps of monthly growth potential through the seasons from PACE Turf. Those animated maps take the average temperature, convert it to a growth potential, and then color code a map of the USA with that animation. Cool season (C3) grass growth potential through the seasons Warm season (C4) grass growth potential through the seasons The PRISM Climate Group at Oregon State Unive...2024
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PACE Turf injury and suspension
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• Converting clipping volume to dry weight
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...2023Check it out Pace Turf
Timeline
- 2024
"I wrote about the importance of effective height of cut in this PACE Turf update." - 2023
"For even more information, see: The PACE Turf information center The ATC YouTube channel The ATC Doublecut and the ATC Office Hours podcasts."
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PACE Turf stats and results
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• Calculating GP
2024
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• Converting clipping volume to dry weight
2024
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• Accumulation rate of soil organic material
2024
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• Two weeks in August
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
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• MLSN is not GP, and GP is not MLSN
I know this can use more explanation, because I’ve heard people refer to “their MLSN N” as being some amount. When I first heard that, I was taken aback, because nitrogen (N) is explicitly not part of MLSN. After hearing this repeatedly, and finding it usually in the context of a site-specific N prediction that is generated by the PACE Turf climate appraisal form, I wanted to wri...2023
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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• Calculating GP
2024
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• Converting clipping volume to dry weight
2024
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• Summer assessment with ΔGP
2024See also Hong Kong
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• Accumulation rate of soil organic material
2024
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• Two weeks in August
2024
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• Maps of average temperatures in the USA
2024
Golf Fame Ranking
- 1. Rory McIlroy
- 2. Scottie Scheffler
- 3. Jon Rahm
- . . .
- 173. 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