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, https://www.asianturfgrass.com/post/using-plant-growth-regulators-on-golf-course-putting-greens/
- Bill's GSR article from 2015, Effective use of plant growth regulators on golf putting greens: https://gsr.lib.msu.edu/article/kreuser-effective-4-3-15.pdf
- Reasor et al.'s article on Growing Degree Day Models for Plant Growth Regulator Applications on Ultradwarf Hybrid Bermudagrass Putting Greens: https://doi.org/10.2135/cropsci2018.01.0077
- Brown et al.'s article on Growing degree-days optimize trinexapac-ethyl reapplications on ultradwarf bermudagrass putting greens: II. Testing a reapplication schedule: https://doi.org/10.1002/csc2.20387
- The Greenkeeper App: https://www.greenkeeperapp.com
- Follow Bill Kreuser on Twitter at https://twitter.com/PGRBill

Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/
Find turfgrass information and decision-making tools at https://www.paceturf.org/
See the PACE Turf YouTube channel at https://www.youtube.com/user/paceturf
See the ATC newsletters at https://subscribepage.com/atc_newsletters
Listen to the ATC Doublecut with Micah Woods podcast at https://atc-doublecut.transistor.fm/
Listen to the ATC Office Hours podcast at https://atc-office-hours.transistor.fm/

• Turf Without Borders show page: https://turfwb.asianturfgrass.com/
• International Turfgrass Society: https://turfsociety.com/