All Episodes
Displaying 151 - 169 of 169 in total
Five comments (and my replies) about the OM246 Office Hours
A colleague from Canada wrote with 5 comments after finishing the ATC Office Hours episode about OM246 with guest Chris Tritabaugh. I explain here how I responded, and...
The remarkable effect of [just enough] traffic on an unmown lawn
One of my running routes takes me past an unmown lawn. Yet some of the grass in that lawn is of such a height, texture, and quality, that it could be a golf course put...
Turf Twitter analysis, irrigation frequency and amount, & ATC content survey results
For the fifth year in a row, I've done an analysis of turfgrass Twitter to identify some of the most influential accounts. I discuss this, the ten posts on the blog th...
The top 10 posts of 2021 plus the non-comprehensive awesome list
I discuss the top 10 posts on the ATC blog in 2021, which were mostly about coring, aeration, organic matter matter management, and playability. I also discussed the n...
Does organic matter vary from green to green by a lot, or by a little?
Daniel Hahn asked me if organic matter (OM) varies a little bit, or a lot, between greens on the same course. What was my opinion about that, he asked? Fortunately, I ...
The 2.5 hour OM246 discussion, distilled, summarized, and reviewed
When Chris Tritabaugh and I sat down to discuss the OM246 report, it turned into a two and a half hour conversation. By request, I summarized it in a blog post, which ...
Zoysia, water use, and fact checking
I saw an article in the Global Golf Post that states zoysiagrass "requires … less water .. than bermuda[grass]." I guess there's not much fact-checking in golf industr...
One thing I'd like everyone to understand about MLSN
Grass is alive (hopefully), so it uses nutrients. That means the nutrients in the soil go down over time. When using MLSN the way I do it, you'll make an estimate of h...
Soil organic material by mass and by volume
Soil organic matter is almost always reported on a mass basis, as the mass of organic matter per mass of soil. In this episode, I discuss what the volume of the organi...
A potassium reserve in the soil: non-exchangeable and mineral K
I talk about two research projects in which one would have every expectation that the grass would respond to K fertilizer, but did not. What happened? The grass was ab...
Soil organic matter and N mineralization (with a 5x difference between Reykjavik & Bangkok)
I discuss the annual estimate of N mineralization from soil organic matter and explain how I make calculations that can be expressed as daily, weekly, or monthly in ad...
The growth ratio: is the grass growing faster, or slower, than expected?
The turfgrass growth ratio takes the actual growth (#ClipVol) and expresses it in relation to how much growth is expected, given the temperatures. I explain how I didn...
Zoysia on highway medians in Thailand
I discuss the standard practice of sodding highway medians with zoysia (manilagrass) in Thailand and why the zoysia does not persist.
All you need to know about total organic material measurement (#OM246) by depth
This explains the OM246 test and how it is distinct from the usual tests for soil organic matter. I go through the key points of the organic matter bullet list that I ...
Inertia as the force of inactivity, and a story about frost delays
Inertia is the force of inactivity. Inertia can also be defined as “disinclination to act.” I was struck by that because there is some inertia in the turf industry, is...
How much carbon and humus are in the soil under turfgrass?
This is a description and narrative of the blog post about a popular topic --- carbon fertilizer and soil organic matter.
Five years of sand topdressing adds up to less than I used to recommend in one year
This is a discussion of my blog post on sand topdressing amounts over five years, and how it happens that the five year total is actually less than I once recommended ...
More potassium than grass can use or the soil can hold has an inevitable result
When more potassium is added than the soil can hold, that potassium disappears. At least most of it does. This episode discusses research by Jackie Guevara at Michigan...
What the ATC Doublecut is all about
Introducing the ATC Doublecut, in which I take a second look (thus the "double cut") at one of the ATC blog post topics, explaining why the topic is important enough f...