Asian Turfgrass Center

The ATC Doublecut with Micah Woods

Sports EN ↓ 208 episodes

I discuss ATC blog posts, with supplementary information, stories, and the reasons why I thought the topic was worth writing about, and worth reading about. Thus, a doublecut of these topics. This covers grass selection, playability, and all the work done to create a certain type of turfgrass surface.

Author

Asian Turfgrass Center

Category

Sports

Latest episode

Jul 6, 2026

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Episodes

Growth ratio to predict clipping volume for any time of year 31.03.2023

One of the common questions about #ClipVol is "what is a normal amount of clippings to get?" By using the growth ratio, it's possible to account for the temperature conditions through the year and from that calculate how many clippings would be normal for any day in the year. The specific blog post discussed was https://www.asianturfgrass.com/post/what-should-my-clipvol-be/ You can see the growth...

Turfgrass growth rate and plant growth regulators with Bill Kreuser 20.03.2023

Bill Kreuser joined to answer all the questions I could think of related to plant growth regulators (PGR). We discussed re-application intervals based on growing degree days for multiple turf species, and a lot of things related to growth rate and PGR use in general. Some of the items we discussed include: - The blog post getting the ATC Doublecut treatment, https://www.asianturfgrass.com/post/usi...

Cool-season turfgrass growth potential in Augusta in April and in November 16.03.2023

In 2020, I looked at the temperatures in Augusta during the April Masters Tournament week, and the temperatures in November during the re-scheduled Masters dates. From those temperatures, I calculated the growth potential: https://www.asianturfgrass.com/post/turfgrass-gp-april-november/ For more about the temperature-based turfgrass growth potential, see https://www.asianturfgrass.com/tag/growth-p...

The USGA's GS3 for measuring putting green performance with Scott Mingay and Jordan Booth 03.03.2023

I spoke with Scott Mingay and Jordan Booth from the USGA about the GS3 tool that measures green speed, smoothness and trueness of ball roll, and surface hardness of golf course turf. Links: Bobble Test video: https://www.asianturfgrass.com/post/teaching-the-bobble-test-video/ USGA Green Section website: https://gsshop.usga.org/ Read more about all kinds of turfgrass topics at https://www.asianturf...

Soil nutrient levels—especially in sand rootzones—can change rapidly 01.03.2023

Soil nutrient levels might change more rapidly than you realize. This has implications for whether nutrients should be applied as fertilizer, or not. I showed data from an experiment I did when I was a graduate student in this blog post: https://www.asianturfgrass.com/post/soil-nutrient-levels-change/ Jason Haines has written about a similar topic, and explained it perhaps more clearly than I have...

Five things to know about soil pH, and how to get the best fertilizer recommendations 23.02.2023

I recommend keeping the soil pH between 5.5 and 8.5 when you are managing fine turfgrass. This episode explains why that is the recommended range, and also considers the recent GCSAA nutrient survey and the phenomenon of different N, P, and K application rates between those who soil test and those who do not. The blog posts discussed in this episode are: https://www.asianturfgrass.com/post/a-soil-...

Soil test calibration and interpretation for turfgrass with Beth Guertal 17.02.2023

Turfgrass soil test interpretation and the fertilizer recommendations that come from that have been highlighted as "arbitrary" and "based on other crops" and "needing more research." I suggest the #MLSN method as a way to bypass a lot of these problems, and Dr. Beth Guertal joined me to talk about this fascinating topic. We discussed the post "Best judgment of the agronomist" which has a link to t...

Growth potential of turfgrass, the link to actual growth, and a further connection to N fertilizer with Bjarni Hannesson 13.02.2023

Bjarni Hannesson has been using the temperature-based turfgrass growth potential (GP) for ten years. We discussed how he makes use of it in Iceland, and how the GP can be used to predict when and how much N fertilizer may be required to produce the desired growth rate. We discussed this blog post, to begin with: https://www.asianturfgrass.com/post/which-more-effect-growth-light-or-temperature/ We...

The temperature-based turfgrass growth potential (GP) in words — not numbers 10.02.2023

The temperature-based turfgrass growth potential (GP) is a utility function that expresses the potential of temperature to affect shoot growth. Without going into too many numbers or the GP equation, I explained what GP is and how it is used. I discussed these posts and shows about GP: - https://www.asianturfgrass.com/post/gp-explained-photos/ - https://www.asianturfgrass.com/post/gp-as-proxy-for-...

Spots of excitement—snow mold spots—in an otherwise boring potassium experiment, with Doug Soldat 31.01.2023

Doug Soldat is a professor in the soil science department at the University of Wisconsin-Madison. We discussed a recent photo he shared showing dramatically increased snow mold where K fertilizer was applied. Or perhaps it was dramatically reduced snow mold where K fertilizer was not applied. - See the photo we discussed: https://www.asianturfgrass.com/post/k-fertilizer-and-more-snow-mold/ - Watch...

How to collect soil samples for #OM246 and #MLSN tests 24.01.2023

Detailed answers are at https://www.asianturfgrass.com/post/soil-sampling-and-interpetation-questions-om246-mlsn/ I also recommended these blogs/newsletters: Chris Tritabaugh's ct_turf newsletter: https://ctunderscoreturf.substack.com/ Jason Haines' Fusariummy blog: https://fusariummy.blogspot.com/ See the ATC newsletters at https://subscribepage.com/atc_newsletters Read more about all kinds of tu...

Turfgrass Twitter in 2022 with Paul Hurst 16.01.2023

Paul B. Hurst joined me to discuss the Turfgrass Twitter 2022 analysis. Read more about that at https://www.asianturfgrass.com/post/turf-twitter-analysis-2022/ See the Turf Twitter 2022 app to find any and all accounts: https://asianturfgrass.shinyapps.io/turf_twitter_2022/ Follow Paul on Twitter: https://twitter.com/GreensPro See the Rock Star video: https://twitter.com/GreensPro/status/160413965...

The 10 posts no one read last year with Joe Gulotti 15.01.2023

Joe Gulotti joined me to discuss ten blog posts from the ATC blog that got the fewest views in 2022. It's easy to understand why some of these are on the list. A few deserve another chance to be seen. We discuss a range of topics, from maintenance Mondays to 19th holes. Here's the list we were talking about. These are the ten posts no one read last year (in relative terms): https://www.asianturfgr...

How much N is in two tenths of a pound? A lot, or a little? 12.01.2023

I discussed the philosophy behind this post: https://www.asianturfgrass.com/post/is-two-tenths-of-a-pound-of-nitrogen-a-lot-or-a-little/ On a related topic, see this one about organic matter that was never there: https://www.asianturfgrass.com/post/what-if-it-was-never-there/ Watch this episode at https://youtu.be/8Eh_RkE1HGQ Read more about all kinds of turfgrass topics at https://www.asianturfgr...

Fourteen of my favorite turf photos from 2022 09.01.2023

I showed photos from this post: https://www.asianturfgrass.com/post/flights-favorite-turf-photos-2022/ Watch this episode at https://youtu.be/eZIzaF7g6w8 Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ Find turfgrass information and decision-making tools at https://www.paceturf.org/ See the PACE Turf YouTube channel at https://www.youtube.com/user/paceturf See the...

Planning forward, measuring backward, plus a year end miscellany 30.12.2022

These posts were discussed in this episode: https://www.asianturfgrass.com/post/measuring-backwards-and-planning-forwards/ https://www.asianturfgrass.com/post/key-moments-automatically-added-on-videos/ https://www.asianturfgrass.com/post/pace-turf-updates-in-2022/ https://www.asianturfgrass.com/post/some-surprising-results/ https://www.asianturfgrass.com/post/a-long-talk-with-joe-gulotti/ https://...

Total organic material testing (OM246) to measure how much grass grew underground 05.12.2022

This episode is about soil organic matter (excludes plant material) and total organic material (like it sounds). Blog posts and calculators discussed include: - https://www.asianturfgrass.com/post/how-much-did-the-grass-grow-underground/ - https://asianturfgrass.shinyapps.io/om246/ - https://www.asianturfgrass.com/post/two-soil-organic-matter-timelines/ - https://www.asianturfgrass.com/post/tale-t...

Park Grass experiment photo gallery, fertilizers, and weeds in turfgrass 30.11.2022

Interactive Park Grass photo gallery: https://doi.org/10.23637/rpg5-plotphotos-01 ATC blog post: https://www.asianturfgrass.com/post/park-grass-photos/ Rossi and Woods on dogma: https://www.asianturfgrass.com/post/fertilizer-and-weeds-at-park-grass/ Park Grass video: https://youtu.be/-3-Pm5JUQZ4 Watch this episode on YouTube: https://youtu.be/417kuWeaTvk Read more about all kinds of turfgrass topi...

Is carbon the next frontier in fertilization? 18.11.2022

I discussed this blog post: https://www.asianturfgrass.com/post/is-carbon-the-next-frontier-in-fertilization/ Also this one, how much carbon and humus are in the soil? https://www.asianturfgrass.com/post/how-much-carbon-and-humus-are-in-the-soil/ This video gives an intro to the 2022 Tour de Fungus: https://youtube.com/shorts/x36-KkZ_VFo?feature=share Watch this episode at https://youtu.be/YuGMUir...

Coring (hollow-tine cultivation) as a growth stimulator, plus estimated N mineralization from SOM 03.11.2022

Is growth stimulation the real benefit of coring turfgrass? https://www.asianturfgrass.com/post/coring-maybe-real-benefit-is-something-else/ Organic matter reduction calculations from coring: https://www.asianturfgrass.com/post/hollow-tine-solid-topdress-organic-matter/   How much nitrogen mineralization is reasonable to expect from soil organic matter? https://www.asianturfgrass.com/post/estimate...

Overseeding timing, early, late, and optimum, by delta growth potential (GP) with Larry Stowell 27.10.2022

We discussed this post: https://www.asianturfgrass.com/post/overseeding-inflection/ Larry and I previously discussed the turfgrass growth potential on the ATC Office Hours: https://youtu.be/oZgXv3ZaHkQ Watch this episode at https://youtu.be/LMikMjQHc04 Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ Find turfgrass information and decision-making tools at https://ww...

Why I recommend annual soil testing for professionally managed turfgrass grown in sand rootzones 24.10.2022

I discussed these blog posts. low pH and annual testing: https://www.asianturfgrass.com/post/one-reason-why-i-recommend-annual-soil-testing-of-sand-rootzones/ Large scale fertilizer recommendation effects: https://www.asianturfgrass.com/post/p-fertilizer-recommendations-as-a-2x-to-18x-multiple-of-mlsn/ Portugal seminars: https://www.asianturfgrass.com/post/five-short-seminars-on-exiciting-topics/...

Big picture implications of #MLSN, SLAN, & SPF phosphorus recommendations, plus cumulative #ClipVol 16.10.2022

This episode looks at these posts: https://www.asianturfgrass.com/post/grass-clippings-year-to-date/ https://www.asianturfgrass.com/post/fertilizer-recommendations-by-spf-slan-mlsn/ https://www.linkedin.com/pulse/fertilisation-decisions-based-minimal-levels-sustainable-hahn/ Watch this episode at https://youtu.be/IX54ncnlvug Read more about all kinds of turfgrass topics at https://www.asianturfgra...

The most common soil testing mistakes, and how to avoid them, with Doug Soldat 11.10.2022

We discussed these posts and articles. - My blog post: https://www.asianturfgrass.com/post/the-most-common-soil-testing-mistakes-and-how-to-avoid-them/ - Doug's "How Reliable is Soil Testing" article: https://archive.lib.msu.edu/tic/groot/article/2013may8.pdf - Follow Doug on Twitter at https://twitter.com/djsoldat - Our tissue testing discussion on ATC Office Hours: https://youtu.be/91uKNFJxGDY -...

An alternative reference for frost delays with Jim Huntoon 05.10.2022

An alternative reference for frost delays ( https://www.asianturfgrass.com/post/an-alternative-reference-for-frost-delays/ ) has links to all the articles, reference guides, photos, and conversations we discussed. James Huntoon joined me to talk about frost delays and frost damage on turf in winter. Follow Jim on Instagram https://www.instagram.com/huntoonjmsc/ and Twitter https://twitter.com/hunt...

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