Turfgrass growth rate and plant growth regulators with Bill Kreuser

Bill Kreuser joined to answer all the questions I could think of related to plant growth regulators (PGR). We discussed re-application intervals based on growing degree days for multiple turf species, and a lot of things related to growth rate and PGR use in general.
Some of the items we discussed include:
- The blog post getting the ATC Doublecut treatment, www.asianturfgrass.com/post/u...
- Bill's GSR article from 2015, Effective use of plant growth regulators on golf putting greens: gsr.lib.msu.edu/article/kreus...
- Reasor et al.'s article on Growing Degree Day Models for Plant Growth Regulator Applications on Ultradwarf Hybrid Bermudagrass Putting Greens: doi.org/10.2135/cropsci2018.0...
- Brown et al.'s article on Growing degree-days optimize trinexapac-ethyl reapplications on ultradwarf bermudagrass putting greens: II. Testing a reapplication schedule: doi.org/10.1002/csc2.20387
- The Greenkeeper App: www.greenkeeperapp.com
- Follow Bill Kreuser on Twitter at / pgrbill
Read more about all kinds of turfgrass topics at www.asianturfgrass.com/
Find turfgrass information and decision-making tools at www.paceturf.org/
See the PACE Turf KZbin channel at / paceturf
See the ATC newsletters at subscribepage.com/atc_newslet...
Listen to the ATC Doublecut with Micah Woods podcast at atc-doublecut.transistor.fm/
Listen to the ATC Office Hours podcast at atc-office-hours.transistor.fm/

[@danthemarinerman24]

I mentioned on Twitter you two are awesome. I wouldn't be where I am without you guys. Started greenkeeper in 2009 and made instant impacts everywhere I went with it. You both have talked at our chapter events. Your fingerprints are all over everything I do! Thank you keep it coming! Bobble test and om246 going into the routine this year!

[@asianturfgrass]

Thank you Dan. That's very kind of you to say, and I am glad you make good use of these ideas. Have fun with #BobbleTest and #OM246. I think you'll be impressed at the value those measurements provide.

[@rey3472]

Taller grass has more leaf surface area. Potential to absorb more PGR.

[@kkevinj1]

the taller the more pgr required, it evens out

[@kkevinj1]

Did you discuss lateral growth on and off pgr?? Will runners grow just as fast?? I watched 2/3 but gave up

[@kkevinj1]

guess this means no discussion on spreading speed, only vertical

[@jturf]

This was awesome. I love the work Bill has been doing with growth rates and the greenkeeper app. I've had increased om2 levels and relatively low nitrogen recovery from clippings while using primo. I wonder if that's why 🤷‍♂️

[@asianturfgrass]

Thank you. Yes, maybe. That would be a primary suspect of what has happened.

[@davidmckechnie5048]

Seed head production - breeding of photoperiod .