All Episodes

Displaying episodes 1 - 30 of 140 in total

How many hours until the grass wilts? Predicting soil water content with Dr. Bill Kreuser

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 surfactan...

Core sweepers make aeration easier, ball roll after 270 rounds, and estimating N in clippings

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 sho...

What you should know about soil test P, spring growth, and #TurfSpeedo calculations

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 spee...

Putting surface management, the turf speedo (growth ratio), & surprising results with T-Jay Creamer

T-Jay Creamer joined me to discuss bentgrass & Poa annua (bent-Poa) management with a surprisingly low annual N rate, almost no use of PGRs, and no aeration (other tha...

P fertilizer & Poa, the #MLSN time issue, and #ClipVol annual totals

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 dis...

Optimal and practical overseeding windows with Jim Huntoon

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 dorman...

Botanical walks, ecoregions, and MLSN for lawns with Maggie Reiter

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, w...

An example of ample light when temperature limits growth

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 b...

The combination of light (DLI) and temperature (GP)

The growth potential converts air temperature to a 0 to 1 (or 0 to 100%) scale. Of course, there are a lot more things that affect actual growth, including light, nitr...

Leaf N normals from PACE, plus #OM246 video, #MLSN testing, #TurfMath, and soil test frequency

This episode goes through a lot of updates from both the ATC and the PACE Turf websites. Topics discussed include OM246, the problem with frequent soil testing, the pr...

Adam Moeller on sand, #OM246, #ClipVol, and putting green management in 2024

Adam Moeller joined me to discuss how to manage greens in 2024. We talked about his research at Purdue University on sand and bentgrass and coring and N rates, and abo...

Physical testing of golf putting green rootzones & soil nutrient sampling with Brian Mavis

Brian joined me to discuss his recommended soil sampling strategy for an 18 hole golf course. We also discussed what he teaches in a 2 hour GCSAA seminar on physical t...

Forget about fertilizing with carbon, with Dr. Bryan Hopkins

The 2018 article by Bryan and Tyler Hopkins, "Carbon: the next frontier in fertilization?" concludes that we "should not be fertilizing with carbon." Bryan joined me t...

Annual sand topdressing quantities, zoysia seeds, and a measuring laser

Zoysiagrass can seed year round when the conditions are right. In this episode, I discuss what those conditions are, share some tools for getting a site-specific sand ...

Blog post bombs of 2023 with Joe Gulotti

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 talki...

Nitrogen, coring, the pH chart, hourly ET, growth rate, and surface hardness: top posts of the year

With Google Analytics I can check the pages on the ATC website that get the most views. These were the ten posts from 2023 that got the most pageviews.These posts are ...

Photos remind me of what I learned last year

I looked through my "Flights and favorite turf photos" post to see what I learned, or what I was reminded of, through these photos. I discuss N rate, grass species, do...

How a conference education program gets put together with Deb Burnett & Sami Strutt

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 t...

Topdressing by rote isn't the best way to do it, with Chris Tritabaugh

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 rec...

Robotic automowers for golf course (and all kinds of) turf with Janne Lehto, MG

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...

Updated OM246 sampling guide, GP is not MLSN, and soil samples don't dry too much

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 muc...

Wetting agent re-application intervals by growing degree days (GDD) with Bill Kreuser

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 ...

Bentgrass greens in Perth summer temperatures with Fraser Brown

Lake Karrinyup Country Club in Perth, Western Australia has creeping bentgrass greens and sometimes sees high temperatures over 40 °C. Course superintendent Fraser Bro...

Maximum N rates that work when linked to growth potential (GP) with Dr. Michael Bekken

I spoke with Michael Bekken about normal nitrogen rates, why they vary so much, why that matters, what a normal N rate linked to growth potential (GP) might be, and gr...

Sand topdressing rates, soil organic matter/material, cultivation, and K with Chas Schmid

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 gre...

Fertilizer by "program" vs. application by a flexible system

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 u...

Documenting progress by comparing totals from one year to the next with Jon Wall

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 w...

How much soil organic matter is too much? Plus Zoysia, circle mows, botany, and ecology

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...

The bobble test scoring scale and what the test is used for with Chris Tritabaugh

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 ...

Total organic material testing and reacting to soil test results with John Rowland

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 tot...

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