Posts Archive
All the posts from the blog, listed in chronological order.
2024
20 Dec – The Talking Greenkeeper's holiday extravaganza
08 Dec – OM246 calculator updated
05 Dec – MLSN and lawns
04 Dec – K fertilizer recommendations and more with Dr. Frank Rossi
25 Nov – Sand in clippings
22 Nov – Calculating GP
20 Nov – Biofertilizers, soil conditioners, and biostimulants
13 Nov – The questions I ask
11 Nov – Estimating nitrogen mineralization: an example
07 Nov – Reel Turf Techs podcast
03 Nov – Converting clipping volume to dry weight
24 Oct – A chance to update my advice
18 Oct – Do you have an idea why they recommend so much K?
14 Oct – Divot math
05 Oct – Seven minutes of outstanding contributions
03 Oct – Top ATC2x episodes
30 Sep – Summer assessment with ΔGP
25 Sep – Football pitch performance workshop in Bangkok
23 Sep – The Grammar of Greenkeeping: managing turfgrass growth for optimal playing surfaces
13 Sep – Accumulation rate of soil organic material
09 Sep – Layers in the rootzone
30 Aug – Two weeks in August
29 Aug – A visit to The Talking Greenkeeper
11 Aug – The turf GvX: growth versus expected
04 Aug – Nitrogen rate as a pendulum swing
19 Jul – 97 more article titles
10 Jul – A turf (and soil) paradox
03 Jul – Better turf conditions with more intensive maintenance
24 Jun – A problem with the controls
19 Jun – Maps of average temperatures in the USA
17 Jun – Reconstructing soil P from "disassembled" soil samples
07 Jun – Nitrogen harvested in clippings: calculation update for 2024
02 Jun – "Green sweepers that work beautifully"
31 May – Ball roll after 270 rounds
30 May – Soil testing on the Cornell Turfgrass Show
26 May – The spring growth flush
23 May – Turf GvX looks like this
19 May – Mehlich 3 soil test P in sand rootzones
08 May – The annual and year to date clipping yield
07 May – The time component of soil test interpretation
29 Apr – No Poa after 16 years
19 Apr – This is the kind of green where zoysia beats bermudagrass
18 Apr – Optimum overseeding time windows
22 Mar – An example of ample DLI
18 Mar – Breaking the ice
12 Mar – Light and GP, again
07 Mar – Five down, one to go
04 Mar – A couple problems with year-round soil nutrient analysis
01 Mar – Testing MLSN
26 Feb – Nutrient harvest turf math
24 Feb – New OM246 video script
10 Feb – Turfgrass GvX, nitrogen harvest, and fertilizer adjustment
04 Feb – 'Greenkeepers know, the world over, that if the grass grows too slow, they will be out of a job'
31 Jan – Measuring effective cutting height with a laser
25 Jan – The annual top post reshuffle
21 Jan – Annual sand topdressing amounts
15 Jan – Daylength, temperature, and Zoysia flowers
03 Jan – I was surprised to read this about nitrogen, coring, and sand topdressing
01 Jan – Ten posts no one read last year
2023
26 Dec – Grammar in a podcast and turf talk at a tournament
24 Dec – The top 10 posts of 2023
22 Dec – Flights and favorite turf photos of 2023
18 Dec – MLSN is not GP, and GP is not MLSN
14 Dec – Updated OM246 sampling instructions
12 Dec – Seminars and conferences: past, present, and future
20 Nov – Can soil samples dry too much?
19 Nov – Quantitative vs. qualitative: a little goes a long way
13 Nov – Monthly maximum N or annual maximum N
23 Oct – Documenting your progress toward sustainability
16 Oct – Bobble test rating scale
12 Oct – Botanical walks and circle cuts
09 Oct – Le Tour de France de Micah Woods
04 Oct – How much organic matter is too much?
02 Oct – An observation about seedheads in zoysia at putting green height
20 Sep – One additional chatter or snaking event in every third ball roll
12 Sep – Places with high growth potential (GP) all year long
12 Sep – Seasonal change in soil pH in a tropical monsoon climate
06 Sep – A nitrogen amount that's far too small—or is it?
05 Sep – Keeping turf free of weeds, diseases, and insects
04 Sep – Tournament diary: KBC Augusta 2023
23 Aug – Putting green data from measurement to summary
18 Aug – Tournament golf on zoysia greens
11 Aug – Soil VWC estimate by a soil water balance
29 Jul – Hourly evapotranspiration, soil water content, and crop coefficients
22 Jul – Sand topdressing measurement by exact methods
18 Jul – More observations about course maintenance in Japan
11 Jul – Four numbers about golf course maintenance in Japan
26 Jun – Coring three times a year is recommended when …
20 Jun – Shade effect of clouds
16 Jun – All about OM246
26 May – Last summer at 36 locations
20 May – Best time of the year to soil sample
13 May – Reflections on growth rate, nitrogen, and topdressing
12 May – Manganese in soils and the MnAI
10 May – Managing firmness (surface hardness) of turfgrass surfaces
08 May – Converting between soil test extraction methods
07 May – A behind the scenes look at soil testing
29 Apr – Organic matter terminology in turfgrass soils
27 Apr – Regarding GP and adjustments
15 Apr – Springtime golf course maintenance in Japan
08 Apr – The GvX equation
30 Mar – What should my ClipVol be?
20 Mar – The GP Avatar app is updated
18 Mar – Turf video playlists
16 Mar – New seminar section on the website
28 Feb – Soil nutrient levels change
19 Feb – Putting green measurements
16 Feb – Turfgrass P and K recommendations might be getting better
09 Feb – Best judgment of the agronomist
04 Feb – This is a soil pH chart that I do like
24 Jan – K fertilizer and more snow mold
19 Jan – Teaching the bobble test video
18 Jan – Soil sampling and interpretation questions: OM246 & MLSN
12 Jan – Recommended turfgrass reading
10 Jan – Is two tenths of a pound of nitrogen a lot, or a little?
05 Jan – An analysis of turfgrass industry Twitter accounts in 2022
03 Jan – Ten posts no one read last year
02 Jan – Flights and favorite turf photos of 2022
2022
28 Dec – The top ten posts of 2022
27 Dec – Planning forwards and measuring backwards
20 Dec – A long talk with Joe Gulotti
16 Dec – Some surprising results
09 Dec – PACE Turf updates in 2022
04 Dec – Two soil organic matter timelines
02 Dec – Key moments automatically added on videos
22 Nov – How much did the grass grow underground?
19 Nov – Park Grass photos
30 Oct – Estimated nitrogen mineralization from soil organic matter
26 Oct – Coring: maybe the real benefit is something else?
24 Oct – One reason why I recommend annual soil testing of sand rootzones
16 Oct – P fertilizer recommendations as a 2x to 18x multiple of MLSN
14 Oct – Turfgrass on a Spanish Tour
14 Oct – Five short seminars on exciting topics
08 Oct – Fertilizer recommendations by three different methods: SPF, SLAN, and MLSN
07 Oct – Frost covers as customer service
03 Oct – Grass clippings year to date
20 Sep – An alternative reference for frost delays
13 Sep – The Talking Greenkeeper: Season 5, Episode 1
12 Sep – Reminder to air dry soil samples
10 Sep – Duration of snow cover in Hokkaido
09 Sep – Two week turfgrass tour in Japan
08 Sep – Mowing patterns in tea fields
04 Sep – Do more people watch or listen to the ATC Doublecut?
19 Aug – Highlights from my presentations in New Zealand
16 Aug – ATC Doublecut listeners by country
31 Jul – Normal manganese (Mn) levels in soil and turfgrass leaf tissue
28 Jul – A conversation with Andrew Thomson
23 Jul – Drought performance of warm-season turfgrasses
21 Jul – More about the PACE Turf acquisition
19 Jul – Zoysia and bermudagrass green speed
16 Jul – Golf rounds and days open
10 Jul – The least enjoyable experiment ever
08 Jul – Sodium and potassium as percentages or concentrations
03 Jul – Low light locations for warm-season grasses
21 Jun – Survey results: fertilizer recommendations as ratios, percentages, or neither
19 Jun – Checking dollar spot with model probability
14 Jun – Working backwards in turfgrass maintenance
12 Jun – Pitch marks that last for days
02 Jun – A hypothesis about the fecundity of Zoysia
31 May – Soil and water management: 3 primary problems, with solutions
16 May – Talking Turf on Pullin' Weeds
11 May – How I recommend fertilizer nutrient ratios
09 May – All the hashtags, in a tropical climate
07 May – Is this the best extra hole in golf?
05 May – Our VIP tent seminar at the Catalunya Championship
16 Apr – Tom Cook's extraordinary lawn
14 Apr – My preferred method of OM246 sample collection
05 Apr – Organic material accumulates more rapidly in putting green soils under these two conditions
03 Apr – What if it was never there?
28 Mar – University of Florida visit and seminar
23 Mar – MLSN and correcting soil "deficiencies"
20 Mar – A turfgrass tissue testing manifesto
14 Mar – Soil, grass, and playability
06 Mar – MLSN film shoot in Hua Hin
27 Feb – A crash course in OM246 total organic matter testing
26 Feb – What's normal for OM2
25 Feb – Playability, putting green disruption, and a note about scheduling and notifications
19 Feb – Fertilizer supply vs. nutrient use
13 Feb – What is the variance in the growth potential (GP) equation?
09 Feb – Growth potential as a proxy for season length
04 Feb – Results of the soil sampling procedures survey
01 Feb – How do you collect and prepare soil samples?
18 Jan – Five comments about the ATC Office Hours on OM246
14 Jan – The wonders of [just enough] traffic on turfgrass
09 Jan – "I have always heard deep and infrequent was the way to go"
08 Jan – Results of the ATC content preferences survey
06 Jan – Ten posts no one read in 2021
03 Jan – An analysis of turfgrass industry Twitter accounts in 2021
2021
29 Dec – The top ten posts of 2021
26 Dec – A non-comprehensive list of awesome turfgrass things other people did in 2021
22 Dec – The Talking Greenkeeper podcast with Jason Haines
21 Dec – Organic matter variability between greens at the same site
16 Dec – Our Office Hour (actually 2.5 hours) discussion, summarized
12 Dec – Zoysia, water use, and fact checking
09 Dec – One thing I'd like everyone to understand about MLSN
08 Dec – Soil organic material by mass and by volume
01 Dec – The ATC Office Hours and ATC Doublecut Debut
23 Nov – A potassium reserve in the soil: non-exchangeable and mineral K
19 Nov – Soil organic matter and N mineralization
14 Nov – Temperature, seasonal changes in growth, and figuring out the optimum amount of growth
13 Nov – Looking at the clipping volume growth ratio
11 Nov – More about zoysia on highway medians in Thailand
07 Nov – Inertia as the force of inactivity
31 Oct – How much carbon and humus are in the soil?
28 Oct – Sand topdressing and surface layer organic matter
23 Oct – Adding potassium fertilizer does not increase the soil's ability to store it
19 Oct – Green condition information boards at Japanese golf courses
14 Oct – OM246 sampling instructions
10 Oct – Bobble test and roll distance
05 Oct – Turfgrass videos with Japanese (日本語字幕あり) and Thai (ซับไตเติ้ลภาษาไทย) subtitles
03 Oct – Sand and organic matter have different bulk densities
02 Oct – OM246 reports explained
26 Sep – A tour of the Global DLI app
24 Sep – Maximum soil organic matter, not minimum, should be the goal
15 Sep – What happens when you play golf on greens that were topdressed only once in a year?
09 Sep – The putting green bobble test in practice
06 Sep – Five different ways to measure smoothness and trueness of golf ball roll on putting greens
26 Aug – Simple solutions to a difficult problem
25 Aug – MLSN and turfgrass nutrient recommendations
22 Aug – Ball roll on zoysia greens
20 Aug – An extraordinarily interesting golf tournament
10 Aug – The inexorable rise of soil organic matter
03 Aug – Lack of response to a fertilizer application
29 Jul – Extending the beer analogy
26 Jul – The art of Japanese golf course turf maintenance
26 Jul – Getting around the golf course in a kei truck
25 Jul – What we talk about when we talk about disturbance
22 Jul – The solution to an irrigation water salinity problem is more of that same water
19 Jul – Tissue tests as "postmortem types of analyses"
25 Jun – Soil water content turf hacks
19 Jun – Soil organic matter should be invigilated
14 Jun – Three things you can do right now with OM246 data
10 Jun – Total organic material accumulation rate and sand topdressing requirement
09 Jun – All the organic material
07 Jun – Organic matter change over time
07 Jun – Cranking up the volume
31 May – Another talk with Joe Gulotti
27 May – Zoysia growth habit and the type I prefer (for golf)
25 May – What you answered about MLSN
22 May – Why I don't worry about infiltration rate
17 May – The Brede equation
11 May – A stimpmeter love story
10 May – Growing bentgrass in tropical heat
03 May – An especially lucid abstract about core aeration
23 Apr – Organic matter reduction by hollow-tines, solid-tines, and sand topdressing
19 Apr – Mental models, soil organic matter, and chocolate bars
13 Apr – Zoysia putting greens and expected speed
31 Mar – A turfgrass Shiny app collection
12 Mar – N input accounting
08 Mar – You won't believe this common maintenance practice doesn't reduce organic matter at all
07 Mar – What zoysia driveways in southern Thailand taught me about rolling
03 Feb – Comparing satellite and ground-based measurements of DLI
01 Feb – Manila American Cemetery
28 Jan – A global DLI app
24 Jan – Ten posts no one read in 2020
15 Jan – No core aeration, no deep verticutting, and surprise! No summer decline
13 Jan – ATC newsletter survey results: future video topics
11 Jan – An analysis of turfgrass industry Twitter accounts in 2020
10 Jan – Flights and favorite turf photos of 2020
2020
30 Dec – The top 10 posts of 2020
24 Dec – A non-comprehensive list of awesome turfgrass things other people did in 2020
24 Dec – Sand topdressing by exact depth: how to work it out
21 Dec – Soil test showdown
16 Dec – Flying Blind: the episode you've been waiting for
14 Dec – Thai GCSA seminar: improving playing conditions and optimizing work efficiency
12 Dec – The Flying Blind trailer: 8 things to know, measure, and adjust
08 Dec – 7 things I've learned about turfgrass around the world
04 Dec – 5 examples of Goodhart's law in turfgrass management
02 Dec – A Tale of Two Tests
30 Nov – The last year of DLI with weekly averages
29 Nov – Still Learning: the official trailer
28 Nov – Worldwide agroclimatology data, PAR, shade, and grass
25 Nov – Organic matter separation from turfgrass soil samples
16 Nov – Key things to know about high quality turf surfaces
14 Nov – Sodding highway median strips with zoysia
24 Oct – Two suggestions about clipping volume data recording
14 Oct – Fun on my front steps
08 Oct – Total organic material at the surface of warm-season grass putting greens
06 Oct – Total organic material at the surface of cool-season grass putting greens
04 Oct – The BIGGA National Regional Conference in November
14 Sep – This is why you replicate
09 Sep – Bermudagrass stolons and zoysiagrass rhizomes
31 Aug – A "new" column, starting with creeping bentgrass heat stress
12 Aug – The cause of these spots may surprise you
03 Aug – Updated spreadsheets for sand topdressing by GP
01 Aug – Numerical notes from Nikanti GC
24 Jul – Hollow-tine cultivation and solid-tine spiking both failed to alleviate summer bentgrass decline
21 Jul – A quick geographical estimate of MLSN reach
20 Jul – Have we been doing it all wrong? Soil testing and composite samples
19 Jul – To walk or to ride, a difficult decision
08 Jul – Variation in soil organic matter (humus) from point to point on the same green
06 Jul – How much does total organic material vary within the same green?
29 Jun – Radish seedlings on a bentgrass nursery after fumigation
24 Jun – Twice the growth at a different mowing height
27 May – How MLSN works
26 May – MLSN and salinity
23 May – Bermudagrass, zoysiagrass, and water use
22 May – Four more sources for MLSN information
18 May – Brand new MLSN webinar this Friday
17 May – A new article about MLSN fertilization on golf courses
13 May – Putting green organic matter by depth in the soil
10 May – Algae, sand, and phosphorus
08 May – Webinar recording: critical maintenance this year
07 May – It is easy to know when grass grows too slow
01 May – Sand topdressing by growth rate and clipping volume
30 Apr – Temperature-based growth potential (GP) in April and November
27 Apr – Eleven years of website visits by device type
21 Apr – April 27 webinar on critical maintenance in 2020
21 Apr – MLSN and disease
19 Apr – Surface hardness of eight grass species on putting greens
18 Apr – Four tools to measure surface hardness
17 Apr – When grass grows more, it makes more roots
15 Apr – No magic bullets in plant nutrition
10 Apr – It is difficult to run a fertilizer down the field when the corn is six feet high
06 Apr – Roots on grass supplied with N, P, and K
03 Apr – Roots on grass kept deficient in P and K
26 Mar – Four ways to determine nutrient requirements
25 Mar – Turf performance and the lifespan of individual grass leaves
23 Mar – Rolling, nitrogen, dollar spot, and Microdochium patch
19 Mar – None of the expensive fertilizer programs were superior to that of urea and iron
17 Mar – Simple, idiot proof, and inexpensive
14 Mar – Why soil pH should usually be kept above 5.5
06 Mar – Morning shade looks like this
05 Mar – PAR looks like this
03 Mar – Updated K calculator
28 Feb – New technologies, ethics, and money
26 Feb – Asking the right questions
24 Feb – Quacks and Suckers
23 Feb – Before your next calcium app, read this
17 Feb – Soil organic matter: a bullet list
14 Feb – Calcium leaches?
11 Feb – Winter grass color, zoysia, and soil
09 Feb – Turfgrass soil sampling, part 7 of 7
07 Feb – Turfgrass soil sampling, part 6 of 7
06 Feb – Turfgrass soil sampling, part 5 of 7
05 Feb – Turfgrass soil sampling, part 4 of 7
04 Feb – Turfgrass soil sampling, part 3 of 7
03 Feb – Turfgrass soil sampling, part 2 of 7
02 Feb – Turfgrass soil sampling, part 1 of 7
31 Jan – Big differences between species
29 Jan – The amount of potassium leached after rain on 10 of 11 days
20 Jan – Ranking Turf Twitter in 2019
17 Jan – Catching up with my reading
10 Jan – Ten posts no one read in 2019
02 Jan – Flights and favorite turf photos of 2019
2019
31 Dec – A non-comprehensive list of awesome turfgrass things other people did in 2019
26 Dec – The top 10 posts of 2019
25 Dec – Dandelions and potassium
21 Dec – Can you see the P?
11 Dec – Insight from Andrew Thomson's Presidents Cup Diary
11 Dec – The top 10 posts from the old blog
06 Dec – Highlights from three seminars in Copenhagen
30 Nov – Three hours of an MLSN seminar on just one slide
25 Nov – Quick screencast of my continuous improvement system presentation
17 Nov – Experiment update: fertilizer response at planting
13 Nov – I forgot this one too
08 Nov – Online education through GreenKeeper University
07 Nov – My presentations at the Oregon GCSA fall meeting
05 Nov – Handout for the OGCSA fall meeting
31 Oct – Competition, stress, and disturbance
29 Oct – Fertilizer response at planting
28 Oct – When this goes off the rails, it goes way off the rails
12 Oct – New article in GCM about MLSN
11 Oct – So many things to learn about in this world
29 Sep – Core aerating putting greens, or not
29 Sep – Time for a new excuse
22 Sep – Putting green speed, surface hardness, and clipping volume
16 Sep – Cleaning cores the easy way
08 Sep – A continuous improvement system for turfgrass
07 Sep – Grass on the Kumamoto City Tram lines
27 Aug – Ball bounce on greens after 7 days of rain
20 Aug – It's a zero-based program
20 Aug – Three seminars with the Oregon GCSA
17 Aug – Smoother fairways with a 10 ton vibratory roller
16 Aug – Pitch performance workshop in Bangkok
08 Aug – Three reasons why sand topdressing is best expressed as a depth
29 Jul – Total organic matter testing on putting greens: sample number and sample volume
22 Jul – Establishment time: zoysia grow-in from stolons
10 Jul – The Cornell Turf Talk Podcast with Special Guest David Hicks
09 Jul – Post-rain growth flush from nitrogen in the rain or nitrogen from the soil
03 Jul – New article with a straightforward discussion of clipping volume
25 Jun – This one simple trick can transform putting greens from usually good to consistently great
19 Jun – Verdure removal (or not) in turfgrass soil profile organic matter tests
14 Jun – Temperature for loss on ignition in turfgrass soils
10 Jun – Measuring organic matter
09 Jun – Thinking about sand
06 Jun – The SportsTurf Interview: Dr. Micah Woods
05 Jun – Turf color, consistency, and the oldest course in Thailand
02 May – Of conventional mowers, electric mowers, and electricity generation
01 May – "Positive comments from the players which is really what counts"
27 Apr – The soil temperature #TurfHack works again
18 Apr – Creeping bentgrass nutrient use in summer
07 Apr – Genki level pamphlet
19 Mar – Half-aerified greens; sodded fairway stripes; with other interesting and informative matters
17 Mar – Is it temperature or day length?
10 Mar – Tokyo temperatures and growth potential, animated
08 Mar – Regarding how soil tests work
05 Mar – Pretty hopeless in predicting deficiency
21 Feb – An important Conference takes place between Mr. Gulotti and Andrew McDaniel
18 Feb – Do you need to add beneficial microbes to the soil to make it function properly?
18 Feb – The turfgrass genki level, part 5: what's real, what's not, & the simplicity of this
15 Feb – The turfgrass genki level, part 4: a normalized comparison of N fertilizer to growth rate
10 Feb – The turfgrass genki level, part 3: turf growth response measured by clippings
03 Feb – The turfgrass genki level, part 2: showing N applied in relation to standard N
03 Feb – The turfgrass genki level, part 1: from temperature to standard N
02 Feb – Northern Virginia sunlight in 2018 compared to previous years
31 Jan – Ranking Turf Twitter in 2018
28 Jan – A golfers' paradise
27 Jan – BTME 2019 on Twitter
27 Jan – Ten posts that no one read in 2018
21 Jan – Can you spot the grass that did not get enough water?
20 Jan – Flights and favorite turf photos of 2018
02 Jan – The top 10 posts of 2018
2018
30 Dec – A non-comprehensive list of awesome turfgrass things other people did in 2018
27 Dec – One bucket at a time
26 Dec – Four amazing charts: number 3 will shock you!
14 Dec – 3 presentations at the Czech Greenkeepers Association conference
01 Dec – Organic matter and green speed at the 40th Spanish Greenkeepers Congress
29 Nov – Humbug, the MLSN movie
21 Nov – Nutranta seminar at Manila Southwoods
17 Nov – Kurofune keeper
17 Nov – The new MLSN movie trailer
06 Nov – Guest on the Talking Greenkeeper show
23 Oct – Attacked vigorously from every quarter
21 Oct – "Nothing to do with whether or not it works"
18 Oct – Top 25 turfgrass tweets of the 2018 Ryder Cup
15 Oct – Drought, bermudagrass, and zoysiagrass
15 Oct – Four reasons zoysia should be a poor choice for California
14 Oct – High resolution DLI maps of the United States
11 Oct – Golf and Health
10 Oct – Botanizing at Nippon Treasure Links
09 Oct – Monthly Turfgrass Roundup: September 2018
01 Oct – The turfgrass twilight zone
30 Sep – MLSN for leaf tissue
29 Sep – "Hell, I did that 30 years ago"
28 Sep – Is it turf grass, or turfgrass?
27 Sep – What we talked about
23 Sep – Catching up on my reading, heat stress edition
16 Sep – Rituals, surrogate markers, and turf performance outcomes
16 Sep – What's the best way to keep up with all you're doing?
15 Sep – Recording of my presentation about managing turfgrass diseases in Asia
14 Sep – Shopping for magazines in 7-11 at 4 a.m.
12 Sep – Nitrogen, rain, and starting point estimates
07 Sep – Airplane fuel requirements, soil test calcium, and MLSN
20 Aug – Piper and Pebble Beach
10 Aug – A soil temperature turfhack
03 Aug – After 17 inches of rain, how much K leached?
30 Jul – Managing turfgrass diseases in Asia with minimal input
24 Jul – Grass and soil for sports turf in Thailand
23 Jul – Temperature and zoysia
15 Jul – It doesn't have to be so complicated
10 Jul – A pleasant day, with an unpleasant termination
07 Jul – Two solutions for the problems of turfgrass fertilizer recommendations
29 Jun – Predicting organic matter in turfgrass soils
24 Jun – What causes disasters, expensive corrective measures, and deterioration of good golfing conditions?
17 Jun – Smith-Kerns and korai
10 Jun – Some rise, some fall, some climb
03 Jun – Two more things about clipping volume: timelines & ball roll
01 Jun – Relative to their own requirements, animals and microbes live in a carbon-rich, nitrogen-poor world
31 May – Is carbon "the next frontier in fertilization?"
30 May – The probability of a dollar spot epidemic
22 May – Turf stories as Twitter Moments
21 May – Paspalum and manilagrass lawns
20 May – So much silicon research I can't keep up with it all
04 May – You have been featured - Golf Digest India May 2018
03 May – Monthly Turfgrass Roundup: April 2018
30 Apr – Tissue testing and gas mileage
28 Apr – Is morning sun the most important for turf? It depends.
24 Apr – Recording of my #ClipVol webinar at TurfNet
22 Apr – ATC website visits by device type
16 Apr – Three recent conversations
05 Apr – Learn the rules like a pro, so you can break them like an artist
01 Apr – The case for reactive greenkeeping
31 Mar – Par Golf's Impact manga, media, and golf course maintenance
25 Mar – Clipping volume, green speed, and units
18 Mar – Javagrass lawns in Bangkok
11 Mar – Leaves of grass
08 Mar – "I really wish that I could hear this presentation"
07 Mar – Looking at times and words from ten thousand tweets
28 Feb – "After a pimento cheese sandwich and a Masters club …"
14 Feb – Turf conditions, efficiency, and the 'Grammar of Greenkeeping'
11 Feb – I've got a new slide
09 Feb – When does it usually rain in Bangkok?
06 Feb – How to get a quick estimate of grass nutrient use
05 Feb – If the greens are too hard, how to make them soft?
03 Feb – New MLSN cheat sheet
24 Jan – My four presentations at BTME
20 Jan – More than a success story
15 Jan – "Never has a sport needed to adapt more"
13 Jan – I've been asked to give a seminar on MLSN guidelines
09 Jan – Turfgrass Twitter Analysis
2017
30 Dec – The top 10 posts of 2017
29 Dec – Flights and favorite turf photos of 2017
24 Dec – A non-comprehensive list of awesome turfgrass things other people did in 2017
23 Dec – Fixing these issues in one fell swoop
21 Dec – Ten posts that no one read in 2017
20 Dec – Topdressing frequency on golf course putting greens in Japan
04 Dec – "I am curious about your stance on nutrients in irrigation water …"
02 Dec – Is the MLSN value the average?
01 Dec – Representing the distribution of a lot of numbers
27 Nov – Minimalist turfgrass nutrition
16 Nov – Year to date rain, and bermudagrass quality
15 Nov – Turf around the world, with a couple maps
13 Nov – The Palm Springs inflection date in 2017
05 Nov – Warm-season grass, autumn temperatures, and winter overseeding
29 Oct – As to the MLSN guidelines … how do they apply to growing in a new course?
23 Oct – The September cover article in Bizgolf about turf, me, and ATC
21 Oct – Presentation videos from the 2017 ASHS conference
19 Oct – My presentations in Coeur d'Alene
13 Oct – Historical clipping data
10 Oct – This is the time of year for …
04 Oct – "The difference between a model working great and being a massive failure"
27 Sep – "Potassium applications have been associated with increased winter diseases in northern climates"
25 Sep – The growth, nutrient use, and water use of 3 grasses in central Thailand
23 Sep – Converting grass stolon planting rates from bushels to mass per area
16 Sep – "Percent base saturation seems not to be a particularly useful concept"
15 Sep – Flipping things around
13 Sep – Three distinct ways I've thought about turfgrass management
03 Sep – Sand topdressing and growth potential
01 Sep – GP is a number. It's explained here in photos and words.
29 Aug – A greenkeeping discussion
24 Aug – MLSN in use: soil tests, fertilizer, and the results
23 Aug – How to spend less than $5,000 on tournament green fertilizer
20 Aug – Sand topdressing to match grass growth
18 Aug – A lot more than your average tournament
16 Aug – I just bought a plane ticket to Manchester
15 Aug – Geographical analysis of those using MLSN
14 Aug – Morning clipping volume during tournament week at KBC Augusta
11 Aug – Turfgrass industry social network use for work
09 Aug – Tissue testing for turfgrass
08 Aug – Tissue testing: sometimes my own words come back to haunt me
07 Aug – Tissue testing: aiming at the wrong target
06 Aug – Have you seen turf that ran out of potassium?
31 Jul – Phosphorus deficiency symptoms in the control plots
30 Jul – A chart of asianturfgrass's most influential Twitter followers
27 Jul – Coming up in October
27 Jul – Remember this? Saving $150,000 in a year? I checked the results 8 months later
26 Jul – Can we guess how low the P is here
21 Jul – Turfgrass at a Tourism Convention
17 Jul – Green speed ridgeline plot and the work to produce these conditions
16 Jul – Sward stimpmeter speed for seven species
14 Jul – My frustration in not being able to increase our green speed
12 Jul – More followers as a superintendent?
06 Jul – This will make you rethink what you throw in the spray tank
05 Jul – An economic case study
04 Jul – Clipping volume, or clipping weight?
28 Jun – Sorry if this is a rubbish question
26 Jun – I don't really need to show any data for this to be certain
23 Jun – Do the MLSN guidelines use 17 essential nutrients?
19 Jun – "Already proving to be more valuable than I originally expected"
18 Jun – Tonight’s reading
15 Jun – “Is there a particular reason why you think it’s a poor way to fertilise?”
03 Jun – How much N is in rain and snow?
01 Jun – Of turf, roots, and fertilizer
31 May – The two green system usually means there are two bentgrass greens per hole
21 May – Soil test interpretation and more: 4 seminars in Australia
07 May – What's my workflow? 2017 edition
05 May – MacKenzie's fundamental principle of greenkeeping
25 Apr – A fascinating tour of courses you might not otherwise see
24 Apr – Grass in a tropical park
17 Apr – The GP Avatar app
15 Apr – An MLSN Refresher
30 Mar – The combination of temperature and light
25 Mar – Aluminum and soil pH in 3,010 soil samples
09 Mar – Simulating irrigation frequency at the world famous "snake" course
21 Feb – The Winter’s Tale
07 Feb – The Micah no jikan book …
30 Jan – Playing golf in ice and snow
25 Jan – This is one more post the financial controllers might not want to see
17 Jan – Preventing nutrient deficiencies
09 Jan – Why I don't worry about micronutrients
06 Jan – Sand, leading to more growth, needing more sand, leading to more growth, needing more sand
2016
30 Dec – Maybe those that soil test are just more likely to fertilize in general?
27 Dec – Map of all the flights I took in 2016
16 Dec – An extremely useful tool for the study of putting green speed variability
12 Dec – This is probably superfluous, but …
09 Dec – An eclectic list of references
05 Dec – How to lose 120 million yen with frost delays
29 Nov – Tropical carpetgrass on putting greens
28 Nov – More on the daily soil water balance
16 Nov – Fall potassium and winter traffic on a bentgrass green
07 Nov – Both of these are worth your time
29 Oct – Daily versus monthly calculations of ET and irrigation requirement
27 Oct – The daily soil water balance at Sapporo from 2013 to 2016
19 Sep – Dog’s footprint and grass susceptibility to this disease
06 Sep – Thailand putting green performance in July: a summary
05 Sep – Bangkok is a long way from Knoxville
03 Sep – Fast release fertilizer, fertilizer burn, and root growth
02 Sep – MLSN and the probability of a response to fertilizer application
17 Aug – More about the most sustainable grass hypothesis
02 Aug – Is it normal to be cloudy like this?
26 Jul – A hypothesis about the most sustainable grass
25 Jul – On the variability of hybrid bermudagrass used on putting greens
26 Jun – Does soil water content affect nighttime soil temperatures in summer?
23 Jun – Comparing nutrient content of turfgrass soils
04 Jun – 99 article titles
29 May – Water quality and pesticide performance
17 May – Shade and sun
07 May – How to save 82% on fertilizer cost
01 May – Roots, growth potential, and fertilizer
22 Apr – Is this the most common oxymoron in turf?
30 Mar – That's not the way it is supposed to work
27 Mar – Every spring when the snow melts
25 Mar – I wrote a book and you can read it this weekend
15 Mar – A rule of thumb for cloud effect on PAR
21 Feb – “Which products and technologies are truly beneficial and cost-effective?”
13 Feb – It’s not really about extractable or available
19 Jan – GP and GDD: are they comparable?
18 Jan – "How do you calculate how much water is needed for a given area?"
13 Jan – Misleading, irrelevant, or just plain wrong
01 Jan – A summary of photosynthetically active radiation for 1 year at Tokyo
2015
28 Dec – Map of all the flights I took this year
21 Dec – Estimating daily light integral (DLI) in Tennessee
11 Dec – 40, 30, & 20
07 Dec – Botanizing in Bangkok
11 Oct – I'd be applying potassium all the time
04 Oct – “As clear as mud”
16 Sep – A DLI Index
10 Aug – MLSN around the world
26 Jul – Beware! These topics are misleading and irrelevant
16 Jun – Two short articles on simplifying fertilization and soil test interpretation
15 Jun – Which affects growth more? Light or temperature?
09 Jun – Turfgrass Mystery: the case of the greener grass
17 May – Golf tournaments and weather: can you imagine?
11 May – Another availability question: P & K & MLSN
07 May – MLSN webinar on TurfNet
03 May – 3 decades to use all calcium in the soil?
30 Apr – The choice is economic, not agronomic
26 Apr – 2 similar approaches to turfgrass nutrition, with 1 notable difference
23 Apr – Seminar questions: availability (again), and foliar applications in the context of soil guidelines
19 Apr – Using plant growth regulators on golf course putting greens
31 Mar – Rhubarb, custard, and the little green book
26 Mar – “Can you send me anything that explains the differences between matrella and japonica?”
04 Mar – N & MLSN: what's the connection?
28 Feb – Silica and Green Speed
24 Feb – “Nothing mysteriously beneficial in their formulas”
14 Feb – A hypothesis concerning the most important time for sunlight to fall on turfgrass
09 Feb – Concerning the availability of nutrients in soil
05 Feb – Is sodium an imaginary problem?
27 Jan – Does stressed turf require more nutrient supply, or less?
2014
17 Dec – What do wetting agents really do?
13 Dec – "I started using the MLSN guidelines and was amazed with the huge impact this made"
11 Dec – Even at extremely high concentrations, the bicarbonate did not seal off the soil
13 Nov – Everyone knows zoysia grows slower than bermuda, except when …
02 Nov – Bah! Humbug! Why the concept of “exchangeable” vs. “available” nutrients is a fallacy
28 Oct – “Available” calcium, soil pH, and fearmongering
15 Oct – "The salesmen all suggest Calcium"
14 Oct – Measuring surface hardness on greens, fairways, and approaches
09 Oct – Is this right? 73% of samples from good turf actually require more fertilizer?
30 Sep – Why is the grass so good, but the soil test results so bad?
26 Sep – Conventional nutrient guidelines: explaining what I mean by "broken"
15 Sep – Seasonal nitrogen use, how much and when?
08 Sep – On fertilizer, and whether it should change by season
05 Sep – Zoysia on putting greens? Why?
28 Aug – It cures fairy ring and prevents fungal pathogens: an anecdote about ammonium sulfate
20 Aug – More about metrics: turf in 2 dimensions
29 Jul – A number between 0 and 1: using the turfgrass growth potential
16 Jul – Park Grass experiment video
14 Jul – Helicopter spraying
13 Jul – Increasing potassium “may impart a negative effect on drought resistance”
06 Jul – Spots of excitement in a boring experiment
02 Jul – If you want to do a 3 million dollar irrigation system, you don’t call me
25 Jun – The most common soil testing mistakes and how to avoid them
20 Jun – On the seductive attractions of metric units
13 Jun – Hitting all of our goals
12 Jun – 3 fine football fields
06 Jun – Grass species and the 2 green system
05 Jun – Spring reflections on autumn impressions
15 May – Of trees, turf, and tropical tournament golf
03 May – More advantages of frequent irrigation
02 May – 10 numbers for putting green maintenance
11 Apr – Fertilizer requirement identified with 3 numbers
31 Mar – Divot problems (or not) on manilagrass tees
27 Mar – Tea fans for air movement on bentgrass greens
25 Mar – Golf in Japan, Mt. Fuji, and the two green system
02 Mar – Relationship between soil water content and turfgrass surface hardness
12 Feb – How does a ball roll on a zoysia green?
10 Jan – Nutrient use and nutrient requirements for turfgrass
2013
31 Dec – Turfgrass, overseeding, and growth potential at Dubai
24 Nov – 3 reasons sheep are better than cows for mowing fairways
21 Oct – "Remember, extra nutrients in the soil will not make turf extra healthy"
20 Oct – Not the usual everyday maintenance
29 Sep – Turfgrass Notes from Iceland (photo gallery)
29 Sep – Turfgrass Notes from Iceland (notes)
04 Aug – Does extra potassium improve bermudagrass performance when soil sodium is high?
05 Jul – Looking back to a July with record heat and drought
16 Jun – Getting around the golf course on a sulky
06 Jun – Summertime syringing to cool bentgrass greens: I wouldn’t do it today
05 Jun – Explaining the turfgrass growth potential
02 Jun – For irrigation, which is better? Deep and infrequent, or light and frequent?
23 May – Manilagrass is the best choice for links-style golfing surfaces in East and Southeast Asia
14 May – The Best Golfing Destination in Asia
22 Apr – Waterfall chart of putting green calcium levels
21 Mar – Manilagrass tees and divot problems, fact or fallacy?
26 Feb – Turfgrass Mystery: where can we find this beautiful grass?
24 Jan – Sand, sodium, and soil structure
15 Jan – Playing Golf in the Snow: more greenkeeping adventures from Japan
2012
20 Nov – Overseeded (or not) fairways in Japan
19 Sep – How to save 60% or more in turfgrass fertilizer cost
11 Sep – What is causing the splotchy dew pattern on this fairway?
09 Sep – Why it is not important to maintain soil pH between 6.5 and 7.0
03 Sep – Correcting a common misapprehension about seashore paspalum
25 Jul – Why are there tee markers in the middle of the fairway?
11 Jun – Rolling, multi-course facilities in Japan, and the best zoysia course in the world
09 Jun – Calcium deficiency in turfgrass, an imaginary problem?
04 Jun – Fairway aerification with no clean-up required
01 Jun – Remote controlled golf carts, large patch, and the two green system in Japan
30 May – Turfgrass Mystery: what insect caused this damage?
12 Feb – Calcium for turfgrass: is there enough in the soil?
11 Jan – Potassium for turfgrass: interview with Dr. Larry Stowell of PACE Turf
2011
20 Dec – Why "Liquid" fertilization is better terminology than "Foliar" fertilization
19 Oct – A surprising discovery in Oregon: zoysiagrass and bermudagrass
07 Jul – The two green system on Japanese golf courses
29 Jun – Turfgrass archaeology
08 Jun – What grasses are growing on golf courses in Thailand?
22 Apr – Fertilizer and weeds at Park Grass
04 Jan – Why I Study Japanese
2010
30 Dec – Plant available nutrients in sand rootzones
06 Oct – Asian Amateur Championship at Kasumigaseki Country Club
12 Sep – Which is a stronger grass, Paspalum or Zoysia?
24 Feb – Bermudagrass white leaf: a most unsightly disease
2009
19 Sep – Seashore paspalum seed from Oregon, really!
12 Sep – Where is Sea Spray paspalum seed grown?
26 Jul – How much phosphorus does grass require?
05 Jul – Thatch control by burning
18 Jun – Sodium chloride for weed control
12 Jun – Turfgrass at Dubai
09 Jun – Cost Savings & Turfgrass Maintenance
12 May – Mowing patterns & grass color
27 Mar – Can sodium chloride control weeds in seashore paspalum turf?