Micah Woods and Maggie Reiter discuss the new features, design, and...

I go back five years to another video showing ball reaction on greens...

This is about partitioning the growth flush after a rain. What's causing...

It sounds counterintuitive at first, that you can maintain a lower...

Brian Whitlark joined me to talk about sand topdressing of putting...

I was pleasantly surprised a few months ago when I returned home from a long trip, had some Greenkeeper International magazines waiting for me, and flipping through them found discussion of clipping…

The way we manage the turf affects playability. That’s obvious. Everyone knows that. Knowing that management affects playability is one thing. Doing something about it is another. When you see just ho...

TL;DR: 1) Know the standard sand rate recommendations, which range from 6 to 11 mm per year at present 2) Measure the amount of sand you apply 3) Don’t apply the standard amount!

I wrote “Soil Testing and MLSN: smarter goals, better results” for GreenMaster magazine. Read the article in the CGSA’s GreenMaster—Soil Testing and MLSN Here are a couple quotes from the article.

Jason Haines is the Links Superintendent at Cabot Cape Breton. We had a...

The GCSAA and BIGGA have both approved the 2026 conference education program for continuing education points. I’ll provide the event approval code to GCSAA members at the end of the conference.

I’ve looked at soil organic matter (SOM) and OM246 test results for putting greens of different species. In the top 5 cm (that’s about 2 inches), there will be some SOM and there will also be…

This year’s conference features the inaugural STMIA golf tournament. I’m really looking forward to this, and I’ll be looking to make some birdies too. To sign up for the golf tournament, which is…

On August 3 to 5, I’ll be in Corowa for the inaugural Country Conference, a joint event of the New South Wales and Victorian Golf Course Superintendent Associations. Nadeem Zreikat and I had a chat…

I’ve shared the posts from 2025 that got the most views, and Joe Gulotti and I talked about these in a holiday extravaganza. Then there are these 10 that got the fewest.

A set of OM246 total organic material samples inadvertently got a grinding and sieving process just like normal soil samples.1 As you probably know, a key distinction of OM246 testing is that soil…

This gives an overview of the seminars I presented at the GCSAA...

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Don’t overthink your soil biology writes Andrew McGuire in a blog post with that title. I recommend you read the entire article. I’ll include a few quotes here. He notes three common errors around…

Maggie Reiter joined me to discuss her "Finding Turf Twitter" analysis,...

I enjoyed watching Shohei Ohtani’s performance in Game 4 of the 2025 NLCS. In a postgame interview, Ohtani suggested celebrating with a delicious drink. I was on a business trip at the time, and…

These are the books I read in 2025. I’ve included a few notes. Camino Ghosts, by John Grisham. Every time I read a Grisham book I’m reminded of what a page-turner A Time to Kill was, and of the many…

This episode answers that question with how I recommend doing this. For...

I’ve been selecting some of my favorite photos each year since 2015. This post lists those all in one place. There are photos of tournaments, parks, lawns, stadiums, machines, driveways, temples,…

Every year I take a lot of turfgrass photos. These are some of my favorites from 2025. First, however, my flight map for the year. I also make a lot of charts every year, and I especially enjoy…

Joe Gulotti joined me to give the doublecut treatment to the top posts...

These posts had the most views in 2025. They are on a nice balance of topics: fertilizer, clipping volume, the Turf GvX, playability, tournament conditions, sands, and water. Here they are.

When grass clippings are returned to the turf, the quantity of nutrients...

To register for the Sustainable Turfgrass Management in Asia 2026 conference: Download the registration form Fill out the form with your information Return the completed form to the Thai GCSA

A correspondent wrote with a question about sand topdressing amounts in relation to the turf GvX. “I’m hoping you’d be able to point me in the direction of finding something on sand inputs vs.

The #MLSN method for nutrient recommendations involves an MLSN value that the soil is not supposed to drop below. But what does this value mean, when converted from the usual units of ppm (mg/kg) to…

This question arrived recently: How do you estimate soil nutrient depletion and provide a recommendation if clippings are being returned? Example: lawns or roughs. That’s a good one. See “How to get…

Chris Tritabaugh and I share and comment on the latest #OM246 test...

This is about the quantity of nutrients in reserve, the quantity of nutrients in the soil that the grass doesn’t use, when one keeps the soil nutrients at or above the MLSN values.

This episode explains the steps I'd take to change greens from too hard...

Craig Wyatt is the Golf Course Manager at Abbey Hill Golf Centre in...

The flood situation in Southern Thailand's largest city and several other districts has become desperate after a week of nearly nonstop rain.

Expressing sand quantities as a depth makes communication easier. But to...

Nathan and I had a talk at the start of 2025 about how the lawn might be maintained. What ended up happening was no fertilizer at all. Turns out none was necessary this year. Lawn was mown as needed.…

Episode 18 of ATC Office Hours covers the basic greenkeeping practices that are effective in Denmark on pesticide-free courses. With guests Thomas Pihl, Mads Andersen, and Martin Nilsson, we answered…

Thomas Pihl, Mads Andersen, and Martin Nilsson will join ATC Office Hours to discuss the challenges, techniques, successes, and failures involved with pestic...

Maggie Reiter has done a brand new analysis of turf industry accounts on . See the analysis at Finding Turf Twitter. She wanted to find “high-signal” accounts. I wanted to see if I could find people…

The New York Golf Economic & Environmental Impact Report has interesting...

I read the environmental section of the New York Golf Economic & Environmental Impact Report. More than one out of every five golf courses in the state responded to the survey, with a total of 154 res...

A friend is in charge of a type of grass he hasn’t grown before. We went to look at the grass, and on the way to the golf course, he told me that someone had told him the grass didn’t need much sand t...

This article about MLSN was published in Greenkeeper International in 2018. I suppose it’s one many of you have never seen. My title for this was “Making Sense of Turf Nutrition with MLSN”, although…

YouTube video by Asian Turfgrass Center