The ATC Doublecut with Micah Woods (Asian Turfgrass Center)
Explore every episode of The ATC Doublecut with Micah Woods
| Pub. Date | Title | Duration | |
|---|---|---|---|
| 16 Oct 2024 | GvX, top six episodes, and turf terminology | 00:22:59 | |
I checked the top episodes, discussed turf terminology, and discussed the 2025 GCSAA Outstanding Contribution Award winners Dr. Wendy Gelernter and Dr. Larry Stowell. The four posts discussed in this episode are:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 01 Dec 2021 | All you need to know about total organic material measurement (#OM246) by depth | 00:11:07 | |
I introduced this bullet list: https://www.asianturfgrass.com/post/soil-organic-matter-bullet-list/ This is the OM246 project page with sampling instructions: https://www.asianturfgrass.com/project/om246/ ATC newsletters: https://www.asianturfgrass.com/#newsletters More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 12 Sep 2022 | Mowing stripes on tea, 18 turfgrass videos about greenkeeping in Japan, plus best lift access snow | 00:36:04 | |
Mowing patterns in tea fields: https://www.asianturfgrass.com/post/stripes-after-mowing-not-just-grass/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 26 Aug 2023 | Reflections on a July with record heat and drought | 00:30:45 | |
Andrew McDaniel and I worked together at Habu CC in July 2001. We also worked together at the 50th KBC Augusta tournament in August 2023. I reflect on, and discuss, both of these, in this episode. The blog post discussed is: https://www.asianturfgrass.com/post/looking-back-at-a-july-with-record-heat-and-drought/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 17 Sep 2022 | Turfgrass in Iceland, frost, 24 hours of golf, and #MLSN with Bjarni Hannesson | 00:59:06 | |
Bjarni joined me to discuss this post: https://www.asianturfgrass.com/post/turfgrass-notes-iceland/ Watch this episode on YouTube at https://youtu.be/QbDxAC4awH4 More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 06 May 2023 | Potassium fertilizer could increase dandelions by 20x | 00:26:50 | |
Dandelion (Taraxacum officinale) abundance can be increased by potassium (K) and lime applications. Adding K fertilizer when it is not needed by the grass, or adding lime to increase the pH when the grass does not require such an adjustment, could lead to increased competitiveness of dandelions in that sward. Some links for this episode include:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 29 May 2022 | Turfgrass rootzones: a carbon-rich, nitrogen-poor world | 00:56:54 | |
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 05 Jan 2024 | Robotic automowers for golf course (and all kinds of) turf with Janne Lehto, MG | 01:02:55 | |
Janne Lehto from Hirsala Golf joined me to discuss robotic automowers. Hirsala Golf currently has a fleet of 36 machines, mowing all fairways and 75% of the rough with these autonomous mowers. We discussed mowing heights, some of the interesting benefits that come with using these types of machines, and discussed a few drawbacks. Find Janne on Intstagram at https://www.instagram.com/gcc_jannenestori/ Janne and I talked about automowers in this Cart Rides episode: https://youtu.be/efFGhteKiu0?si=klmO-SxhZvYjJDjG We discussed the research about improved turf quality and energy savings when using automowers on manilagrass turf in Italy: https://www.asianturfgrass.com/post/produced-higher-quality-turf-autonomous/ We also discussed the source of electricity and C emissions: https://www.asianturfgrass.com/post/mowing-electricity-energy/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 16 Oct 2022 | Big picture implications of #MLSN, SLAN, & SPF phosphorus recommendations, plus cumulative #ClipVol | 00:50:11 | |
This episode looks at these posts:
Watch this episode at https://youtu.be/IX54ncnlvug Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 31 Oct 2023 | Sand topdressing rates, soil organic matter/material, cultivation, and K with Chas Schmid | 01:24:13 | |
Dr. Chas Schmid has been involved with many of the same topics I often study and consider---sand topdressing, potassium fertilization, soil organic matter, putting green performance, and so on. His data, and plenty of photographic evidence, also show that there can be completely different outcomes than what I might have expected. We discuss this, on a range of topics, in this episode. - Follow Chas on X: https://twitter.com/Chas_Schmid Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 05 Dec 2022 | Total organic material testing (OM246) to measure how much grass grew underground | 00:26:52 | |
This episode is about soil organic matter (excludes plant material) and total organic material (like it sounds). Blog posts and calculators discussed include: Watch this episode at https://youtu.be/KVYZE3NyP5M Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 01 Dec 2021 | Zoysia on highway medians in Thailand | 00:09:12 | |
I discuss the standard practice of sodding highway medians with zoysia (manilagrass) in Thailand and why the zoysia does not persist. Photos at: https://www.asianturfgrass.com/post/more-about-zoysia-highway-medians-thailand/ and https://www.asianturfgrass.com/post/sodding-miles-of-road-median-with-zoysia/ ATC newsletters at https://www.asianturfgrass.com/#newsletters More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 11 Oct 2023 | Total organic material testing and reacting to soil test results with John Rowland | 01:04:27 | |
Dr. John Rowland from the USGA Green Section Florida region joined me to discuss soil sampling, seasonal soil pH changes, plus sampling and testing methodology for total organic material (#OM246) tests. We discussed this post: https://www.asianturfgrass.com/post/seasonal-soil-ph-change/ See articles by Dr. Rowland, including the one we discussed about organic material testing, at https://tic.lib.msu.edu/tgif/flink?name=Rowland,%20John Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 01 Dec 2021 | What the ATC Doublecut is all about | 00:02:31 | |
Hi. I'm Micah Woods, chief scientist at the Asian Turfgrass Center. I've been studying turfgrass around the world since the 1990s, and I've been writing about turfgrass on my blog in three decades now. That's more than a thousand posts about all kinds of turfgrass topics --- playing conditions, fertilizer, soil tests, grass selection, sustainability, frost delays, growth rate --- pretty much everything that I've been interested in. In this ATC Doublecut series, I'm discussing some of these same topics. Mostly it's the new blog posts, the most recently published ones, but I may take a second look at some of the classic, perennially popular topics. And that's what this Doublecut is --- another look at a topic, with some supplemental information, perhaps some background stories about the topic that I didn't include in the blog post, a justification for why I thought the topic was important enough to write about, and important enough for you to read. These are going to be in the form of videos, so I can show some photos or charts if I think they are relevant, and I'm also releasing this series as a podcast, because I try to describe what I am seeing, so I think this can work as pure audio too. If you think the topic is interesting enough to learn more about, and I hope you will, then you can check out the details at asianturfgrass.com. I put the link to each post getting the Doublecut treatment in the show notes. My idea with this series is to discuss each topic in a casual way, without too many numbers. To hit the key points, as if I were talking with a friend, explaining why I wrote the blog post, and what I am excited about with that particular topic, and what I hope a broader knowledge of that topic might accomplish. If you are a regular reader of the ATC website, then I expect this will be interesting for you because it provides more information about the topics I've written about. And if you are not a regular reader, I hope you'll find the ATC Doublecut enjoyable, as an easy way to find out more about these topics, without having to stop what you're doing, sit down, and read. Turfgrass management and some of the technical details, that's a niche topic. To be able to connect with people around the world with interest in this same niche topic of turfgrass management, that's an amazing thing. Thanks for listening, watching, and for your interest in these topics. | |||
| 19 May 2024 | P fertilizer & Poa, the #MLSN time issue, and #ClipVol annual totals | 00:39:23 | |
In this episode, I discuss sixteen year old bentgrass greens that have also gone sixteen years without P fertilizer. The greens are also free of Poa annua. Then I discuss how fertilizer recommendations made from soil tests are a lot more precise if the time duration over which the fertilizer is being recommended is considered explicitly. And I explain why, when measuring #ClipVol, you will get value from annual totals too.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 10 Feb 2023 | The temperature-based turfgrass growth potential (GP) in words — not numbers | 00:38:26 | |
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/
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 28 Feb 2022 | Bentgrass greens: average fertilizer supply vs. nutrient use | 00:27:23 | |
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 28 Jan 2024 | Blog post bombs of 2023 with Joe Gulotti | 01:57:48 | |
Joe Gulotti, The Talking Greenkeeper, joined me to discuss the ATC blog posts that received the fewest views in 2023. We give these topics one more chance, while talking about quality of ball roll, playability, fertilizer, surface firmness, seminars, translation, and much more. The blog post with these 10 blog post "bombs" is https://www.asianturfgrass.com/post/ten-posts-no-one-read-2023/ Joe's The Talking Greenkeeper podcast is at https://podcasts.apple.com/us/podcast/the-talking-greenkeeper/id1435947281 Our "Holiday Special" episode is at https://podcasts.apple.com/us/podcast/the-micah-woods-annual-holiday-special/id1435947281?i=1000639222356 Joe's conversation with Matt Shaffer is at https://podcasts.apple.com/us/podcast/matt-shaffer/id1435947281?i=1000642712369 Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 20 Mar 2023 | Turfgrass growth rate and plant growth regulators with Bill Kreuser | 01:20:41 | |
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: Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 22 Dec 2021 | The 2.5 hour OM246 discussion, distilled, summarized, and reviewed | 00:11:22 | |
The 4 minute read: https://www.asianturfgrass.com/post/office-hour-discussion-summarized/ The 2.5 hour original video: https://youtu.be/J5_5mDJ-Vxc Watch this episode on YouTube: https://youtu.be/B6vdkMeDFoc Subscribe to ATC email newsletters: https://www.asianturfgrass.com/#newsletters More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 30 Aug 2022 | Drought performance of warm-season grasses plus a KBC Augusta data review | 00:38:15 | |
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 23 Feb 2023 | Five things to know about soil pH, and how to get the best fertilizer recommendations | 00:39:03 | |
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:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 27 Jul 2022 | Frank Rossi and I discuss what I've called my "least favorite experiment ever" | 00:44:07 | |
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 17 Feb 2023 | Soil test calibration and interpretation for turfgrass with Beth Guertal | 01:10:14 | |
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 the #MLSN cheat sheet, plenty of quotes from the past 50 years about this problem, and links to plenty of information about making sure you apply just the right amount of fertilizer: https://www.asianturfgrass.com/post/best-judgment-of-the-agronomist/
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 22 Mar 2024 | An example of ample light when temperature limits growth | 00:22:50 | |
This is a follow-up to the episode last week when I mentioned that I was looking at snow outside, that the light would be ample for growth, but the temperatures were below freezing and thus temperature was limiting the growth. I discuss the new blog post that shows those light data. An example of ample DLI: https://www.asianturfgrass.com/post/an-example-of-ample-dli/ The USGA Green Section Record with the fine podcast, frost research, Pat Jones article, and much more: https://www.asianturfgrass.com/post/breaking-the-ice/ The @TurfgrassEpistemology episode with Travis Shaddox on K and soil testing: https://www.youtube.com/live/aSZwz75aIig?si=Ip9JcBo41Poy_Ras Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 14 Jul 2024 | OM measurements, models, and data analysis with Dr. Henry Qu | 00:52:40 | |
Dr. Henry Qu, partner and data scientist at Oxbridge Economics, joined me to talk about data analysis, and statistics, and how to try to learn things in turfgrass science. We discussed NTEP, posterior distributions, disease resistance, ANOVA, total organic material expectations by species, the process of learning, and much more.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 28 Sep 2022 | Using the turfgrass growth ratio to adjust for site-specific conditions with Jason Haines | 01:04:03 | |
Watch this episode at https://youtu.be/la1ulEIgVT0 Jason Haines is the golf course superintendent at Sunshine Coast Golf and CC in British Columbia, Canada. We discussed this post from the ATC website: https://www.asianturfgrass.com/post/clipping-volume-growth-ratio/ Jason's blog: https://fusariummy.blogspot.com/ Dissolving urea: https://youtube.com/shorts/oXETrSSDdS8?feature=share Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 23 Jan 2022 | Five comments (and my replies) about the OM246 Office Hours | 00:28:20 | |
I gave a detailed answer to 5 comments about this Office Hours episode (https://youtu.be/J5_5mDJ-Vxc) about OM246 testing. The blog post I discussed in this episode is: https://www.asianturfgrass.com/post/five-comments-about-atc-office-hours-om246/ I also talked about these blog posts on roots, and about potassium. Roots: https://www.asianturfgrass.com/post/turf-roots-and-fertilizer/ Watch this episode on YouTube at https://youtu.be/bwZu86OIjx0 More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 22 May 2022 | Elemental nutrient ratios as fertilizer recommendations, and a trip to see zoysia greens in the USA | 00:53:26 | |
I find it really useful to consider nutrient applications as ratios rather than as quantities. Read more in this post: https://www.asianturfgrass.com/post/how-i-recommend-fertilizer-ratios/ I was a guest on the Pullin' Weeds podcast. See my birdie dance and a link to that episode: https://www.asianturfgrass.com/post/talking-turf-on-pullin-weeds/ Watch this episode on YouTube at https://youtu.be/_UweU0dJbdc More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 21 Apr 2023 | Is nitrogen rate connected to surface area disruption? | 00:31:41 | |
March in Japan is the start of cherry blossom season, and on golf courses there is a lot of aerification. I've noticed that golf courses in Japan generally don't do as much surface area removal as is common in some other parts of the world. But the surfaces can still perform. I discuss this in this episode, and have a look at this post from the ATC blog: https://www.asianturfgrass.com/post/springtime-golf-course-maintenance-in-japan/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 24 Aug 2022 | Zoysia and bermudagrass green speed live from the KBC Augusta tournament in Japan | 00:31:39 | |
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 12 Jul 2024 | Doing more work to produce better turf with Jon Wall | 01:07:10 | |
Jon Wall, golf course superintendent at Shanqin Bay, joined me to discuss doing more work to make grass better, rather than doing less. And also about what I'd want everyone to do, which is doing the right amount of work for your property. We talked about many things, starting off with:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 05 Oct 2022 | An alternative reference for frost delays with Jim Huntoon | 00:56:15 | |
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/huntoonjmsc Watch this episode at https://youtu.be/TbGKQAIABhA More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 27 Oct 2022 | Overseeding timing, early, late, and optimum, by delta growth potential (GP) with Larry Stowell | 00:30:48 | |
We discussed this post: https://www.asianturfgrass.com/post/overseeding-inflection/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 06 Mar 2022 | A crash course in #OM246 and burn temperature | 00:17:33 | |
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 13 Jun 2024 | How many hours until the grass wilts? Predicting soil water content with Dr. Bill Kreuser | 01:00:44 | |
Bill Kreuser, Ph.D., president of GreenKeeper, joined me to discuss the new water resource planning tools in GreenKeeper, along with disease risk, PGRs, soil surfactants, and weather data. See more about these tools at the GreenKeeper app: https://www.greenkeeperapp.com/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 24 Aug 2023 | Green firmness measurements after using a 4 ton roller (it actually didn't firm the surface much) | 00:32:21 | |
Andrew McDaniel joined me from the Keya GC maintenance office to discuss firmness measurements of putting greens, using a 4 ton roller on the greens, and why the greens make a crunching noise when walking across them. See the blog post we discussed at: https://www.asianturfgrass.com/post/putting-green-data-from-measurement-to-summary/ See the Shorts videos on the ATC YouTube channel: ATC's YouTube channel at https://www.youtube.com/asianturfgrasscenter See the crunchy zoysia green video on Twitter at: https://twitter.com/asianturfgrass/status/1694144794254361038?s=20 Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 17 Jul 2022 | Achieving the desired turf surfaces by thinking backwards (or why reactivity can beat proactivity) | 00:32:45 | |
I discussed an approach to turfgrass management that involves considering the current turfgrass conditions and then deciding what to do.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 13 Dec 2021 | Soil organic material by mass and by volume | 00:09:00 | |
The volume of organic matter is shown in this blog post: https://www.asianturfgrass.com/post/organic-matter-by-mass-or-volume/ The video of this episode is at: https://youtu.be/pk0KGYxbNMA Subscribe to ATC newsletters at: https://www.asianturfgrass.com/#newsletters More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 28 Aug 2022 | Managing seashore paspalum "dry and lean" with Jon Wall, plus tournament prep in Vietnam | 01:09:02 | |
We discussed this post: https://www.asianturfgrass.com/post/a-common-misapprehension-about-seashore-paspalum/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 13 Sep 2024 | Using #OM246 test results to get net organic material accumulation rate | 00:37:18 | |
When you know the rate at which organic material is accumulating in the rootzone, you can adjust sand topdressing rates with more precision. You can also start to check how any changes in maintenance can have an effect on the accumulation rate. The blog post discussed is this one: https://www.asianturfgrass.com/post/inexorable-rise-soil-organic-matter/ The Shiny app to calculate the accumulation rate is: https://asianturfgrass.shinyapps.io/om246/ You can learn all about OM246 tests at https://www.asianturfgrass.com/project/om246/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 10 Dec 2024 | What every greenkeeper should know about sand in clippings with Dr. Bill Kreuser | 00:53:37 | |
Bill Kreuser from GreenKeeper joined me to discuss how much grass grows, the complicated problems involved when sand is mixed with clippings, growth regulator adjustments, leaf nutrient content, soil surfactant effect duration, and more. #ClipVol We discussed the "Sand in clippings" post from the ATC website: https://www.asianturfgrass.com/post/sand-in-clippings/ You can read more about our discussion of topics such as PGR and soil surfactant scheduling at https://www.greenkeeperapp.com/
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 18 Dec 2023 | Wetting agent re-application intervals by growing degree days (GDD) with Bill Kreuser | 01:29:47 | |
Can soil surfactant (wetting agent) applications be scheduled based on site temperatures? Can a growing degree day model work for this? Dr. Bill Kreuser, president of Greenkeeper, joined me to discuss his exciting progress with this research. - ATC blog post on what wetting agents really do: https://www.asianturfgrass.com/post/what-do-wetting-agents-really-do/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 09 Jun 2024 | What you should know about soil test P, spring growth, and #TurfSpeedo calculations | 00:49:57 | |
I describe what we can learn from looking at five years of Mehlich 3 soil test phosphorus results from golf course putting greens, how to calculate the turfgrass speedo in a standard way, rather than in a chaotic way, and recommend an episode of the Cornell Turfgrass Show that asks if soil testing is the answer to all your problems. These are the links to posts and videos mentioned in the show:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 14 Sep 2022 | Grass color, consistency, and the oldest course in Thailand with Joe Gulotti | 00:37:12 | |
Joe Gulotti joined me to discuss this post: https://www.asianturfgrass.com/post/turf-consistency-color/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 31 Jan 2023 | Spots of excitement—snow mold spots—in an otherwise boring potassium experiment, with Doug Soldat | 00:57:13 | |
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/ Dept of Soil Science Regarding samples, these have to come from the USA. Soils require an import permit to enter the USA and he doesn't have a permit for samples for this project. US samples only, please. - Dest and Guillard on non-exchangeable K, Bentgrass response to K fertilization and K release rates from eight sand rootzone sources used in putting green construction, available at https://opencommons.uconn.edu/plsc_articles/13/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 01 Dec 2021 | Inertia as the force of inactivity, and a story about frost delays | 00:13:51 | |
The post discussed in this episode is about inertia: https://www.asianturfgrass.com/post/inertia-as-the-force-of-inactivity/ More about frost at https://www.asianturfgrass.com/tag/frost/ Sign-up to ATC newsletters for more turfgrass info at https://www.asianturfgrass.com/#newsletters More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 14 Sep 2023 | Does a location exist with 365 days a year of high GP for cool-season grass? | 00:27:57 | |
The temperature-based growth potential, developed by PACE Turf, transforms the average air temperature to a growth potential (GP). The GP is conveniently scaled from 0 to 1 (or from 0 to 100%, if you prefer), and high GP values indicate that the air temperature is close to an optimum for grass growth. This episodes looks at a very interesting question: are there places on earth with a high GP for cool-season grass, all the year round? See this blog post for charts and a full explanation: https://www.asianturfgrass.com/post/places-with-high-gp-all-year-long/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 17 Apr 2025 | Calculation of the average daily temperature | 00:17:43 | |
A common way to calculate average daily temperature is to take the sum of the daily maximum and daily minimum temperatures, and to divide by two. A better statistical approximation of the average temperature is to take measurements made every hour and then to find the mean value of those continuous measurements. This blog post shows a comparison of the three methods for 2024 data at three locations: https://www.asianturfgrass.com/post/calculating-average-daily-temperature/
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 14 Aug 2022 | Posts no one read (but I wish they had): grass on the Kumamoto city tram lines with Joe Gulotti | 00:36:17 | |
Joe Gulotti joined me to discuss the posts on my blog that no one read. In this episode, we discussed grass on tram lines in Kumamoto City. Here's the post: https://www.asianturfgrass.com/post/kumamoto-city-tram-grass/ Joe is host of the Talking Greenkeeper podcast: https://podcasts.apple.com/us/podcast/the-talking-greenkeeper/id1435947281 Turfgrass information and decision support tools at PACE Turf: https://www.paceturf.org/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 12 Jun 2024 | Core sweepers make aeration easier, ball roll after 270 rounds, and estimating N in clippings | 00:33:52 | |
I discuss small plot university research with fixed treatments vs. golf course and sports turf maintenance with treatments that vary, and consider which results we should trust more. I also discuss the bobble test after 270 rounds, mention that core sweepers are a nice machine, and explain how I estimate N harvested in creeping bentgrass clippings. Posts discussed and relevant links include:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 03 Jan 2022 | The top 10 posts of 2021 plus the non-comprehensive awesome list | 00:27:23 | |
These posts are at: https://www.asianturfgrass.com/post/top-ten-posts-of-2021/ Watch this episode on YouTube at https://youtu.be/bZFegyB3cUM More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 30 Mar 2024 | Botanical walks, ecoregions, and MLSN for lawns with Maggie Reiter | 01:07:43 | |
Maggie Reiter joined me to reminisce about the grasses one can find at the back of the 7th green at Pebble Beach Golf Links, to consider soil test results for lawns, what the biggest problems are on lawns and whether solutions exists, and much more. Maggie is a Data Scientist at Sunday, https://www.getsunday.com/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 30 Apr 2023 | Using the standard growth potential (GP) equation allows direct comparisons from site to site | 00:31:58 | |
I used to tell people that GP is just a number, and if they wanted to modify it to fit the way grass grows at their location, then go ahead and do so. I don't say that anymore. Instead, I recommend using the standard equation. Why? To facilitate direct comparisons between sites, knowing that everyone has used the same equation. I discussed this blog post: https://www.asianturfgrass.com/post/regarding-gp-and-adjustments/ PACE Turf's updated listing of turf diagnostic labs is available at: https://www.paceturf.org/public/turf_diagnostic_labs Read more about OM246 tests at: https://www.asianturfgrass.com/project/om246/
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 24 Dec 2023 | Updated OM246 sampling guide, GP is not MLSN, and soil samples don't dry too much | 00:40:29 | |
I talked about some recent blog posts, including updated #OM246 sampling instructions, there is no such thing as an MLSN nitrogen rate, soil samples cannot dry too much, and more. Links to these posts are: Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 19 Aug 2023 | Tournament golf and zoysia greens are a fascinating combination | 00:31:38 | |
I recorded this from Keya Golf Club, which will host the 50th KBC Augusta golf tournament on korai (Zoysia matrella) putting greens this week. I explained why I find this grass on putting greens so interesting, and some of the measurements I'll be making this week. I discussed this blog post: https://www.asianturfgrass.com/post/tournament-golf-on-zoysia-greens/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 11 Jul 2023 | Golf in Japan: maintenance staff numbers, rounds played, number of holes, and annual N rates | 00:35:30 | |
Did you know Japan has as many golf holes as England, Scotland, and New Zealand combined? I visited 11 golf facilities in Japan and discuss some of the interesting equipment and numbers related to the maintenance of those courses. The blog post getting the #ATC2x treatment is: https://www.asianturfgrass.com/post/japan-golf-by-numbers/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 25 Oct 2024 | Topdressing, mowing height, and education points with Andrew McDaniel | 00:19:47 | |
Andrew McDaniel has been watching webinars to get education points, and some of these have been about management of soil organic matter on putting greens. We discussed a particular article and whether that method is something that seems reasonable today.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 25 Nov 2024 | Constants in the turfgrass growth potential equation | 00:24:12 | |
The PACE Turf growth potential equation has one variable (the actual air temperature) and two constants. The constants are optimum air temperature and a term for variance that controls the shape of the curve as the actual temperature moves away from the optimum temperature. It's a little more complicated than that, because the constants change depending on whether you are making the calculation for cool-season grass, warm-season grass, and on whether you are using the Fahrenheit temperature scale or the Celsius temperature scale.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 15 Jan 2023 | The 10 posts no one read last year with Joe Gulotti | 01:51:14 | |
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.asianturfgrass.com/post/ten-posts-no-one-read-last-year-2022/ Listen to Joe's "The Talking Greenkeeper" podcast at https://podcasts.apple.com/us/podcast/the-talking-greenkeeper/id1435947281 Watch this episode at https://youtu.be/bGzc31TwR24
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 10 Dec 2021 | Soil organic matter and N mineralization (with a 5x difference between Reykjavik & Bangkok) | 00:10:14 | |
This episode discusses the topics I wrote about in this post: https://www.asianturfgrass.com/post/soil-organic-matter-and-n-mineralization-bangkok-reykjavik/ The video of this episode is at: https://youtu.be/g31xMEG_voQ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 10 Jul 2022 | Zoysia on putting greens? Why? | 01:00:33 | |
Chris Chase and I discussed zoysiagrass on putting greens and why one would use it. The post we talked about is https://www.asianturfgrass.com/post/zoysia-on-putting-greens-why/ Other related videos include:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 14 May 2023 | Blog post bombs of 2020 with The Talking Greenkeeper | 01:56:08 | |
Joe Gulotti joined me to go through the list of blog posts that got the fewest views on the ATC website in 2020. There was turf tourism, turf hacks, soil sampling, photosynthetically active radiation, four wheelers, and a lot of turf talk as we went through the list.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 23 Apr 2025 | Living plant material (and thatch) are part of #OM246 too | 00:16:48 | |
Achieving the lowest possible #OM246 total organic material value is not desirable, because the living plant material is part of the OM measured with this method.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 17 Jul 2024 | Disease, nutrition, and control problems, with Dr. John Dempsey | 01:05:13 | |
Independent turfgrass researcher John Dempsey, Ph.D., joined me to discuss evaluating treatment effects and the importance of having a good control. We talked about diseases, nutrition, and this blog post: https://www.asianturfgrass.com/post/problem-with-the-controls/ Find John on X at https://x.com/J_J_Dempsey
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 06 Mar 2025 | Top 10 posts of 2024, plus app and podcast recommendations | 00:30:33 | |
I recommend 4 podcast episodes and one useful app that calculates sand topdressing amounts, then quickly discuss the top 10 new posts from the ATC website in 2024. Would you like to comment or have questions about this episode? Reply on Bluesky Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 22 Oct 2023 | How much soil organic matter is too much? Plus Zoysia, circle mows, botany, and ecology | 00:38:59 | |
I flipped through four recent blog posts, about zoysia seedheads on putting greens, the practical question of how much organic matter (or total organic material is too much), seminars in France, circle mows, and botanical walks to find grass growing in nature. Links to these posts are: Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 21 Feb 2025 | Bracketing #ClipVol for a desired range of green speed | 00:32:39 | |
Green speed varies because of many factors. One of those factors is clipping volume. I discuss that relationship and give some advice for those getting started with clipping volume and wanting to know how to adjust it.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 23 Oct 2023 | Documenting progress by comparing totals from one year to the next with Jon Wall | 00:58:16 | |
I was a co-author, in 2013, of an article with the title "Documenting your progress toward sustainability." Jon Wall joined me to discuss this topic, and to consider whether keeping track of annual totals of inputs and resource use in a few key areas can be a meaningful way to document sustainable land management practices in the golf industry. The blog post we discussed, with a link to the full article, is at: https://www.asianturfgrass.com/post/documenting-your-progress-toward-sustainability/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 30 Aug 2024 | My visit to Delaware with Joe Gulotti (The Talking Greenkeeper) | 00:51:50 | |
A month ago Joe Gulotti and I walked the fairways and greens of the Montchanin Course at Dupont Country Club. I wrote a blog post about that, and we discussed my visit in this episode. Blog post: https://www.asianturfgrass.com/post/a-visit-to-the-talking-greenkeeper/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 16 Mar 2023 | Cool-season turfgrass growth potential in Augusta in April and in November | 00:21:08 | |
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-potential/ Watch this episode at https://youtu.be/A_odktP6CAk More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 26 Jun 2024 | Checking phosphorus gradients on putting greens with an upper and lower rootzone sample | 00:37:25 | |
Soil P, pH, and salinity are a few things that likely vary by depth in your rootzone. I've started recommending that 20% of putting greens tested be done with a sample divided at the 5 cm depth. Send the lab a 0-5 cm and 5-10 cm depth sample from that green, rather than the standard 0-10 cm depth sample. I discussed this blog post: https://www.asianturfgrass.com/post/reconstructing-soil-p-from-disassembled-soil-samples/ The MLSN page on the ATC site: https://www.asianturfgrass.com/mlsn/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 31 May 2023 | Transition zone putting greens, light, speed, zoysia, bermuda, and bentgrass with Mike Richardson | 01:02:43 | |
Mike Richardson from the University of Arkansas joined me to discuss zoysia on putting greens, light requirements of different grass species, grass selection in the transition zone, green speed, and winterkill in a wide ranging conversation. You can find Mike on Twitter at https://twitter.com/ArkansasTurf Here are links to some of the topics we discussed: - This post with the green speed by species kicked off this doublecut: https://www.asianturfgrass.com/post/green-speed-ridgeline-plot/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 27 Jun 2024 | Explaining MLSN and assessing ball roll on putting greens, with Carl Schimenti | 01:30:33 | |
Carl Schimenti from Cornell University joined me to discuss intro to #MLSN explanations vs. using MLSN the way it is designed to be used. We also talked a lot about ball roll assessment using the #BobbleTest, and the USGA GS3 ball, and other methods.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 13 May 2022 | Putting green firmness, speed, and roll quality at the Catalunya Championship | 00:58:29 | |
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 12 Jan 2023 | How much N is in two tenths of a pound? A lot, or a little? | 00:27:40 | |
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/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 03 Mar 2023 | The USGA's GS3 for measuring putting green performance with Scott Mingay and Jordan Booth | 00:53:50 | |
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/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 10 Jan 2024 | How a conference education program gets put together with Deb Burnett & Sami Strutt | 01:07:35 | |
In 2018, I delivered four presentations/classes at the Continue to Learn education conference in Harrogate, England. Deb Burnett and Sami Strutt from BIGGA joined me to discuss how an education program gets put together and evaluated.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 18 Oct 2023 | The bobble test scoring scale and what the test is used for with Chris Tritabaugh | 01:28:36 | |
Chris Tritabaugh joined me to discuss the #bobbletest scoring scale and the overall utility of this test. It is used for assessing the smoothness and trueness of ball roll on golf course putting greens. I find the measurements useful as a way to systematically adjust maintenance work. The blog post we discussed, with a link to the "Perfectly True" article, and with the ATC scoring scale, is: https://www.asianturfgrass.com/post/bobble-test-rating-scale/ Two more videos on this topic are: Read Chris's Substack and get his podcast here: https://ctunderscoreturf.substack.com/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 19 Apr 2024 | Optimal and practical overseeding windows with Jim Huntoon | 01:04:03 | |
Jim Huntoon joined me from Horry-Georgetown Technical College to discuss overseeding and the hows and whys of this common practice on warm-season turf that goes dormant in winter. We discussed these two blog posts: You can see my slides and handout from the Palmetto GCSA Education Meeting at this link: https://www.asianturfgrass.com/seminar/palmetto-2024/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 10 Aug 2023 | The growth ratio for consistent growth and nitrogen fertilizer adjustment with Jason Haines | 00:39:44 | |
Jason Haines joined me for another #TurfMath episode to explain what the growth ratio is, how he uses it, and how he calibrates it. See this post for the equation and links: https://www.asianturfgrass.com/post/the-growth-ratio-equation/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 15 Dec 2021 | One thing I'd like everyone to understand about MLSN | 00:10:25 | |
This episode is a discussion of this blog post and article: https://www.asianturfgrass.com/post/one-thing-i-wish-everyone-understood-about-mlsn/ Grass uses nutrients, so we can expect the soil nutrient level to be lower tomorrow than it is today. By making a prediction of the decline in soil nutrient levels for a specific time duration, one can come up with a fertilizer recommendation that ensures the grass will be supplied with all the nutrients it can use. PACE Turf's climate appraisal form makes all these calculations for you: https://www.paceturf.org/index.php/journal/climate To receive the full text of each new ATC blog post the same day it is published, subscribe: https://www.asianturfgrass.com/#newsletters Watch this episode of The ATC Doublecut at: https://youtu.be/9TtqqkamAsc More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 30 Nov 2022 | Park Grass experiment photo gallery, fertilizers, and weeds in turfgrass | 00:33:20 | |
Interactive Park Grass photo gallery: https://doi.org/10.23637/rpg5-plotphotos-01 Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 04 Oct 2023 | Change in ball roll on putting greens from morning to afternoon | 00:38:40 | |
Everyone knows a golf green is smoothest right after the morning work, with some decrease in smoothness as the day goes on. How much does the smoothness and trueness of the roll decrease? I measured it. The blog post discussed here is: https://www.asianturfgrass.com/post/one-chatter-or-snaking-event-in-every-third-ball-roll/ Linde et.al's article on "Comparing three methods to measure putting green trueness:" https://doi.org/10.2134/itsrj2016.05.0332 ATC Doublecut episode about the GS3 ball from the USGA: https://youtu.be/27ZkAUbs_sA?si=FjpJ3MScvKQVxv85 Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 18 Oct 2024 | Golf course water requirement, overseeding, & Zoysia vs. bermudagrass with Dr. Matteo Serena | 01:26:06 | |
Matteo Serena is the Senior Manager of Irrigation Research and Services for the USGA. We discussed drip irrigation, growth regulators and soil surfactants, water use, overseeding, and bermudagrass vs. zoysiagrass water use. We discussed this ATC blog post: https://www.asianturfgrass.com/post/zoysia-and-water-use/ We also discussed these articles: See this zoysia video with Dr. Kenworthy: https://youtu.be/R6ZXW85mm84 More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 09 Jul 2024 | Heat kills: a 12 point list and thermal death point temperatures for cool-season grass | 00:27:14 | |
It's summer in the northern hemisphere, and the two items discussed in this episode provide guidance on managing turf when it has to survive through heat stress.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 08 Jan 2024 | Topdressing by rote isn't the best way to do it, with Chris Tritabaugh | 00:52:00 | |
Chris Tritabaugh joined me to discuss sand topdressing, a long-running conversation we've been having with Dr. John Kaminski, the quantities of sand and N that are recommended vs. the amounts that seem to be required in modern turf maintenance, and much more. We discussed this post from the ATC website about nitrogen, coring, and sand: https://www.asianturfgrass.com/post/i-was-surprised-to-read-this-about-nitrogen-coring-and-sand/ Chris and I spoke about a similar topic in this ATC Office Hours episode: https://www.youtube.com/watch?v=atipVSlT1ws You can read Chris's Substack newsletter at https://ctunderscoreturf.substack.com?utm_source=navbar&utm_medium=web&r=dakt8 Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 27 Dec 2021 | Does organic matter vary from green to green by a lot, or by a little? | 00:17:00 | |
This is a direct link to the blog post discussed in this episode, including the charts showing organic matter variation from green to green on the same course: https://www.asianturfgrass.com/post/organic-matter-variability-between-greens-at-the-same-site/ Watch the video of this episode on the ATC YouTube channel: https://youtu.be/DAhxoA_zhZw Sign up for free ATC newsletters at: https://www.asianturfgrass.com/#newsletters More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 10 Jan 2022 | Turf Twitter analysis, irrigation frequency and amount, & ATC content survey results | 00:48:56 | |
I discussed 4 posts in this ATC Doublecut episode.
You can also watch this episode at: https://youtu.be/JgjCBjHl04Y More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 03 Nov 2024 | Linear relationship between #ClipVol and dry weight | 00:19:35 | |
This episode introduces multiple experiments that have demonstrated a link between rapid measurement of clipping volume and the clipping yield. Clipping yield is typically expressed as dry weight per area. Links to the articles discussed are in the blog post.
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 02 Mar 2022 | What's normal for OM2? (the total organic material at the surface of a putting green) | 00:24:59 | |
I discuss these blog posts.
Watch this episode on YouTube at: https://youtu.be/OvZmGMme6qU More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 02 Jul 2023 | Grass gets this much PAR light in full sun (no clouds) | 00:35:35 | |
For any date, time, and location, it's possible to calculate the amount of light grass would get in full sun. I describe how this is done, and show a calculator that will find this value for you. Direct link to the blog post: https://www.asianturfgrass.com/post/shade-and-sun/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 30 Dec 2022 | Planning forward, measuring backward, plus a year end miscellany | 00:50:19 | |
These posts were discussed in this episode:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 04 Sep 2022 | Manganese deficiency, Doublecut show stats, and my New Zealand presentation highlights | 00:45:09 | |
This episode discusses these four posts:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 29 Oct 2023 | Fertilizer by "program" vs. application by a flexible system | 00:30:11 | |
This considers fertilizer programs, whether research can be misleading when fertilizer is applied at fixed rates on calendar schedules, and why I'm excited about the utility of the growth ratio. Blog posts discussed include: Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 21 Apr 2022 | Soil organic matter accumulates more rapidly in young greens with lower OM content to begin with | 00:25:54 | |
This is an obvious concept but the implications are complex. If soil organic matter accumulates more rapidly in young soils, and if one wants to manage soil organic matter most efficiently, then it makes sense to keep the soils in an older, rather than in a younger, state. Soil age and OM accumulation rate: https://www.asianturfgrass.com/post/organic-material-accumulates-faster-when-soil-om-is-lower/ Watch this episode at https://youtu.be/5WNYy4lL6Ks More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 21 Jul 2023 | I prefer sand topdressing amounts expressed as a depth | 00:36:06 | |
I gave three reasons for my preference that sand topdressing amounts be expressed as a depth. One is consistency and standardization. Depth means the area to which the sand has been applied is already accounted for. Others include easy calculation and integration with #OM246, plus clear communication. The posts discussed here include these:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 07 Aug 2023 | Turf Math with Bjarni Hannesson and Jason Haines | 01:22:25 | |
We discussed the ease of metric units and the utility of knowing some key numbers in turfgrass maintenance. We discussed this post: https://www.asianturfgrass.com/post/attractions-of-metric-units/ Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/ More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 16 Jun 2023 | It's tough to manage cool-season putting greens when ΔGP is less than 0 | 00:47:01 | |
This episode introduces ΔGP, which is cool-season grass growth potential minus warm-season growth potential. Too many days like that and you won't bother trying to grow cool-season grass anymore. Also, best time of the year to soil sample, a superb podcast from Chris Tritabaugh, and a careful look at the difference between soil organic matter and total organic material. These posts were discussed:
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||
| 12 Nov 2024 | Two easy methods to estimate N mineralization under turfgrass | 00:21:31 | |
You can expect soil organic matter to be 5% nitrogen, and you can expect from 1 to 4% of that organic nitrogen to mineralize in one year. You can also calculate estimated daily mineralization and sum it to get weekly, monthly, and annual totals. The blog post discussed is: https://www.asianturfgrass.com/post/estimating-nitrogen-mineralization-an-example/ Subscribe to the Turf Without Borders podcast: https://turfwb.asianturfgrass.com/subscribe More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/ | |||