The ATC Doublecut with Micah Woods
Asian Turfgrass Center
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Sand topdressing matched to clipping volume, with Bjarni Hannesson
I've updated my recommendation for the sand quantity to apply for every unit of clipping volume harvested, if your goal is to keep surface organic material constant. Bjarni and I discussed…
Post-rain growth flush: 12 mL from water, 8 from mineralized soil N, & 2.5 from N in the rain
This is about partitioning the growth flush after a rain. What's causing that growth flush? I made some calculations, using New Forest GC in the UK as an example. The increased soil water content…
More air in the soil with frequent irrigation
It sounds counterintuitive at first, that you can maintain a lower average water content in the soil, and a higher air content in the soil, by applying irrigation every day. Once upon a time, I…
Why you should know standard sand amounts but not necessarily copy them, with Brian Whitlark
Brian Whitlark joined me to talk about sand topdressing of putting greens and especially about sand amounts.The blog post we discussed is:…
Competition, stress, disturbance, species, strategies, and Grime
High maintenance turf often requires a high disturbance and high stress environment. Grime's CSR theory says there are "no viable strategies" for plants in such an environment. I discuss the…
Downward trend in OM2 and varying sand and N rates by green with T-Jay Creamer
T-Jay Creamer is the golf course superintendent at Olympic View Golf Club on Vancouver Island. He's seen a steady decrease in OM2 in response to his N and sand rates, along with substantially more…
Averages, river crossings, fescue, nutrients, spot spraying, and snow mold with Jason Haines
Jason Haines is the Links Superintendent at Cabot Cape Breton. We had a wide ranging conversation about blog posts from 2025, a new #MLSN article, controlling snow mold, things that look easy but…
Firmness, sand, and zoysiagrass with Stewart Naugler
Stewart Naugler is the Director of Agronomy at Loraloma in Texas. We talked about zoysiagrass as a golfing surface, playability, and maintenance requirements. We started by discussion my "Achieving…
Total organic material, soil organic matter, and screens
Thatch and mat at the top of turfgrass rootzones are removed from soils prior to testing for soil organic matter. Total organic material (OM246) testing is designed to measure the soil organic matter…
GCSAA seminar overview, condition-based maintenance, and PAR
This gives an overview of the seminars I presented at the GCSAA Conference in 2026 and discusses updated PACE Turf site analyses of photosynthetically active radiation (PAR).Seminar handout page:…
Research words, a new Turf Twitter analysis, and tropical grasses with Maggie Reiter
Maggie Reiter joined me to discuss her "Finding Turf Twitter" analysis, her analysis of current turf research topics at the ASA-CSSA-SSSA meetings, tropical grasses, and irrigation water…
A blunt conclusion about coring
Scientific writing is not always as clear as this. There's an article I really enjoyed that stated right at the start, in the abstract, that core aeration "might not be worth doing." The blog post…
Flights & turf photos with Dr. John Kaminski
Dr. Kaminski joined me from his sabbatical in Australia to discuss flights, turf photos, and what he's been doing on his sabbatical.The blog post we discussed is:…
If soil is above #MLSN, add only N?
This episode answers that question with how I recommend doing this. For today, we don't need to add N. But the soil nutrient levels decrease with time, we can predict how much the grass will use, and…
Top 10 posts of 2025 holiday extravaganza with Joe Gulotti
Joe Gulotti joined me to give the doublecut treatment to the top posts of 2025 on the ATC blog, plus a bit of holiday extravaganza.Blog post discussed is:…
Nutrient recommendations when clippings are removed vs. returned
When grass clippings are returned to the turf, the quantity of nutrients required as fertilizer is decreased. In this episode I discuss how I handle the clippings returned situation.Blog post…
Soil nutrient values in units of "years of use" rather than units of ppm
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…
How to make greens soft, and the opposite, making soft greens harder
This episode explains the steps I'd take to change greens from too hard (surface hardness and ball bounce, not hard as in difficulty) to just right. It follows that the opposite steps could be taken…
Sand quantity as depth, and a suggestion to measure sand application rates
Expressing sand quantities as a depth makes communication easier. But to know the depth, you need to know how much sand was applied to begin with. I've been surprised at how many turf managers don't…
The right rate for N and sand topdressing: how I do it
I explain how I answered a couple questions about how much N and how much sand a particular grass might require. Specifically, I recommend adjusting N based on #ClipVol and sand based on #OM246.Blog…
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The ATC Doublecut with Micah Woods has published 207 episodes since December 2021, covering topics in Golf, Natural Sciences.
The ATC Doublecut with Micah Woods is currently active with new episodes weekly. Average episode length is 41m.
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