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Did you ever get to the bottom of why PL use so much granular though? Instead of foliar? You thought foliar would still be better than granular as it leaches less, would you still have the growing capacity that the shear numbers in gsm granular can give you? I think what I’m asking is, could weekly feeds provide that weekly punch of growth needed to maintain such a matted pitch the pl need or is it a granular only industry

I got here late, but question. at 17:17 when youre talking about you might not be sure why Chris 4-6 OM accumulation is rising, could it be due to root exudation? This could actually be helping Chris, many people struggle with low CEC on sand based greens, and as he is applying less fertiliser maybe microbial population is working harder in this range? Very interesting and IMO a very good thing! I have 2% OM in that range and i struggle with low CEC. I have to apply alot more Ca/ P/ Mg than one would think.

Trim your mustache bro 😂

100%

yes , at the end all in the same page. We measure , in a routine basis, speed+Boble test + frimness and then at some strategic time we measure soil moisture and infiltration rate. Goals for every paramenters together and in context with works beeing done

Very interesting. Grindavik golf also very interesting to visit, i was there this year and amazing place and country.

Cheer~~~a colorless crystalline compound which is the main nitrogenous breakdown product of protein metabolism in mammals 😊

I am not a turfgrass professional for my carrier, but I have listened to a lot of turf related TH-cam and podcasts and have never once heard about releasing toxic gases from the soil. What negative response in turfgrass can be reversed by venting toxic gases from the soil? What types of gases are these and are they toxic to plants or people?

This was interesting! Looking forward to more of these, Micah. Thanks for continuing to innovate with your content.

Great show! Looking forward to more just like this.

Are other nutrients mineralized through the decomposition process? Would those nutrients from OM show as available nutrients in the Mehlich 3 test?

Nice, a k truck for the greens mowers, i like it.

2015 at Chambers Bay allowed the Open to do what it does best, show the best golfer on the day. The remarkable bitching of golfers used to no roll was so fun to hear.

Can't believe I missed this video. Any updates on zoysia cultivars?

Nice recap 👍

Hi Micah I love this philosophy but I don’t think it’s a one trick pony. I’m on 137 year old native soil greens heavy clay silt loam, I think this is a bad idea to recommend a green which moderate CEC and low infil rates to not apply sand like the text books tell you. Most texts books are catered to these kind of greens. For instance, 100 tonne of pure sand in my green at 4 inch depth doesn’t even make a dent in the soil profile. Still shitty at draining, still shitty EC and moderate CEC rates due to how wet they are in the winter and how much they leach due to my location / rainfall. I’m also in a low level designated flood risk area. With respect I’m trying to grow grass on a field, a Poa field in fact, so I think greens like mine need 100-150 tonne just as a minimum per year. Huge accumulation rates whether we manage growth or not with N I’m only using 10gsm of N For instance which is nothing really, and I get tonnes of thatch, if I don’t my grass is week and gets loads of disease and then we rain for 6 month 🙈 But if you can help me learn please do open to suggestions I hate it atm at this time of year 🤣

Excellent post!

Put on artie Yamamoto from the Bangkok sod center

The circle mowing for bentgrass greens isnt doing anything. That's why no one does it. Grain patterns almost always are never a issue on bentgrass. The proper way to do this is lightly verticut first than lower height of cut slightly because it is a green. Every piece of grass gets cut every other day with clean up lap. I'm a superintendent but I still walk mow greens, been doing it since I started working a private golf course grounds crew. I walk mow greens for a reason, less stress and better cut. This puts a ton of stress on the greens but again it's not needed.

Popular in the industry and valuable to professionals doesn't take away from the wonderful and enjoyable videos you have shared about turfgrass aeration and ecology, also many other topics. Your botanizing on tropical shorelines was very interesting and now that Mr. Cook has supplied you with a text about northwest grasses there should be a temperate botanizing walk in our future.

There was zero turf interaction with the clubs on those shots so there isn't going to be any stickiness. Try to take a divot and see what happens, then come back when your wrist has healed.

This should be a boon to other folks that have excellent research but stumble on the words. It was easy listening..!

Content is top-notch, as usual. The thought of a robot interpreting your book and presenting it so authentically is terrifying!

I Had the Chance to meat this group this year in Kopenhagen. Love to Catch Up next year with and stomata group and a Lot of bear in Neatherland Best wishes Andy Matzner

I really enjoyed this discussion

Is brown top bent similar to what Mr. Cook has in Oregon?

thats amazing, did you not recommend chris around 5mm a year to meet his 1.8% OM accumulation? so how has he got away with half of that this year? would that mean he has accumulated more OM than sand put down this year? if using your numbers? also what months or how many applications would you reccomend applying 5.0mm? in one big hit in august? wouldnt that cause layering? or like 4-5 smaller 1mm hits

If they say made a wider version so no wheels on the pulled cores

NGL Ive watched this one video way more times then Id like to admit. Thank you very much for all the info.

Long awaited, so thank you once again Micah! A good morning listen and a nice start of a new day 😊

Why when I do 12 / 20 x 0.5 am I getting 0.3 and not 1.2 like you suggested? I’m doing the sum you say, Twelve divided by twenty times zero point five, equals naught point 3? Is the math correct here? I think you mean 12 divided by 20 divided by 0.5 12 / 20 / 0.5 = 1.2 is this correct?

Been saying for a while the uk does differently Micah 👌 the kings of fescue right here. You need to visit. What you promote is what the uk actually does and has for a long long time, currently the grammar of greenkeeping, and we’ve been testing OM levels forever, we use mm though and do down to 80mm, I don’t believe the melich 3 tests are as effective but that’s just me. But I know what T-jay is saying, I’m friends with the McMillans and especially at kingsbarns I remember working at the dunhill classic, they didn’t cut a green all week and produced the most pure of fescue surfaces, greens rolling around 10.6 in those windy conditions absolutley pure. The brother at queenswood was the same, he was growing creeping bent grass greens with 50 units of nitrogen a year 50kg h/a He was way ahead of the system, you need to take a trip over here and see for yourself, the whole country is on board not just the few it would be great ambassadorship for your grammar of greenkeeping 👍🔥 I believe this is why Tj is saying he would love to manage grass here. We have had and used data for years, and are extremely sustainable in doing so with many products coming off the market

Joe I miss you buddy! Awesome to see you again.

It's been too long since we last golfed together T-Jay(and Micah). When are you coming out to CCB?

In case I need to get myself out of a situation sometime in the future, what is the ATC Double Cut gang sign?

T-Jay and Micah for the win (FTW)!!! I had the pleasure to meet T-Jay in person last year(thanks to BGGA and his chairman for the event),great man and processional.Waiting for Micah in Bulgaria anytime soon I hope :) ...

Hey Micah why does everyone fertilise greens before maintenance? I’ve always wondered about this and to me it isn’t practical is it? I akin it to, post op medicine that you are prescribed after an operation, you get medicine and are told to rest. Plants are the same no? Let’s say if it’s granular, a large percent of that granular will be lost in aeration and brushing and water down into the root zone, and if it’s foliar the grass will be recovering from abrasion and dry likely not able to utilise the nutrients until its rest phase anyway? Seems like so many wasted man hours. Afterwords is simply so much less time consuming, practical and effective.

Do you know what would be interesting? A study on when grass actually starts to decline/ thin, and or get compaction and black layer and disease with moisture that is too high, for instance the STRI claim 25% should be the moisture range at the top end of the spectrum down to 5%, other consultants on soil pushups recommend 30% for poa, but even that may be too much, do you have any good articles on this? i think a week at 30% would be detrimental

Most greens in Japan are bent grass today. Korai is spikey and grainy; the most frustrating grass I’ve ever putted on. PenguinGolf

Hi Chris and Micah. Course looks great!

Don’t blink

Great to see these Luminaries talking about turf grass!! Thank you for all you do for our industry!!!

I do think as a Head Greenkeeper and as a golf player that is very important to measure trueness and i should say that i do change working plans acoording to values of trueness . Also i relate trueness to cliping yield, speed, firmness , all is conected and i reinforce , i do change working plans acoording, incluiding also quality of cut, etc. How can we manage without measure. And trueness is so important to golfer, yes? Nutrition i do feel it is important to conect to cliping yield and folow good guidelines , realistic ones, plus some fungistatic like iron sulphate

What event were you at when you made this video?

Hi Micah, I think you both may of been getting your wires crossed in your strong beliefs. I'll give you my 2 pence regarding how i interpreted the conversation. As a golf playing super intendant, I can fully understand where Frank is coming from. If you play a round of golf, and you've just shot 14 under, you don't complain the greens are bobbly, it is legitimately just somebody being cruel. I don't know a single honest golfer who shoots 14 under par and says the greens are too bobbly, that is seriously just not possible, i wouldn't even bother going to test the data to prove that, I would simply look at the field of competition and see how many people are 10-14 under par and if there's more than 10, now that's a large sample size. I counter your argument with this, the US Open at Pinehurst was incredible, golfers barely broke par, does that also mean the greens are bad? Using what you've said then all of the golfers Over par should be complaining? I mean literally less than 1% of the playing field broke far, so i'm sorry but i kind of agree with Frank. Now for the most part, i do agree with testing for internal data collection, as in for the maintenance teams knowledge, but we shouldn't be sharing this information with golfers because it is absolutely useless to them, even stimping is an arbitrary number, im in the camp of stimping is useless, why? You stimp on a perfect surface in perfect conditions and then when play starts you're subject to everything, uphill puts that change the stimp meter reading completley, weather conditions which could effect readings, afternoon growth condition dependant, player traffic, there is simply so many things that could effect stimping and in turn that means smoothness and trueness. If you bobble tested your greens mid-round of a us open tournament, i bet my life that conditions would not be the same as the conditions you tested data in the morning, so whats the bloody point? :D I think we can also look at data ' too much' and what we need is a bench march that is acceptable and that is it. Your 8 could be somebody elses 5, could be somebody elses 10 Your stimp numbers might never mean a single thing because not one player actually putts their ball from your stimped position, now if you can honestly read this and reflect on what i've said from a non-bias'd view i think you will agree with alot of it. Moving onto Frank not knowing what to do with a bobble test, i think hes also correct. What do you do if your balls snaking? Do you double cut first? Or a double roll? Or a double verticut? Do you Sand? What do you choose first? Youre subjecting your greens to a process that will stress them for a period of time all because of some snaking or one bobble that could literally be because of a 'pitch mark' thats been repaired incorrectly? That should also be taking into account. So many factors Micah and i think we may be getting a bit too 'data happy'. Just my take though from an ole' logically thinking supe'

In my planted tanks (lol), I would see very similar results. High light, which resulted in faster growth, would consume the nutrients faster and end the week with leaner water. And sometimes, go into deficiencies issues. And pretty fast if very high light and not much nutrients. In a low light tank, nutrients would hang around for much longer. So end of week (week cycle of tests and dosing), and test would show much higher nutrients in water column. So we would dial the dose to do much less nutrients in low light tanks. *we're using RO filted water, 50% weekly water change, weekly nutrient doses. All that said, I never saw the connection of lower nutrient and better plant growth or quality. There would be differences and some quite shocking. Like some plants would show different shapes, color, and size with different nutrient levels. Its a common thing to limit nitrogen to get red comor on some plants. But that can also kill the plant if taken to an extreme and ive done that lol. Too much nutrients would generally be associated with greener leaves and faster growth. Not always what we wanted.

Does it have any effect on Poa triv cotrol as well or just annua?

What kind of zoysia!?

Details please