I explain that moving from full sun to tree shade reduced photosynthetically active radiation by about 80%. I show an app, and a PACE Turf document, that will allow you to find both PPFD and DLI no matter where you are located.

I discussed these links:
- https://www.asianturfgrass.com/post/shade-and-sun/
- https://asianturfgrass.shinyapps.io/ppfd_by_time/
- https://www.paceturf.org/memberedition/weather
- https://www.paceturf.org/gallery/detail/photosynthetically-active-radiation
- https://www.asianturfgrass.com/post/rule-of-thumb-for-cloud-effect-on-par/

Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/
Find a suite of decision-making tools at https://www.paceturf.org/
Get free ATC newsletters at https://www.asianturfgrass.com/newsletter/

• Turf Without Borders show page: https://turfwb.asianturfgrass.com/

John Petrovsky is manager of USGA Green Section Education. He is also the host of the USGA Green Section podcast. We discussed a recent episode about GvX that had an especially insightful quote from Chris Tritabaugh. Also, the U.S. Open, championship golf, clipping volume, and even a bit about MLSN.

Links for topics we discussed include:

• USGA Green Section Record free subscription https://www.usga.org/content/usga/home-page/course-care/green_section_record.htm
• the golf course shown with the Eiffel Tower view is Golf de Saint-Cloud, https://www.golfdesaintcloud.com/
• blog post about GvX and Chris Tritabaugh quote: https://www.asianturfgrass.com/post/any-kind-anywhere-any-level/
• GvX post about zero-handling problem: https://www.asianturfgrass.com/post/gvx-clippings/
• the SI calculator for soil test levels at any probability https://asianturfgrass.shinyapps.io/turfsi/https://www.asianturfgrass.com/post/gvx-clippings/
• OM246 example reports with tables of normal values by species https://www.asianturfgrass.com/project/om246/
• the GSS summary article https://doi.org/10.17605/OSF.IO/RG49P
• how much OM is too much https://www.asianturfgrass.com/post/how-much-om-is-too-much/
• Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/
• Find a suite of decision-making tools at https://www.paceturf.org/
• Get free ATC newsletters at https://www.asianturfgrass.com/newsletter/

• Turf Without Borders show page: https://turfwb.asianturfgrass.com/

Geoff Fenn and I discussed the use of the turfgrass growth potential (GP) in the UK, optimum temperatures, the GvX, clipping volume, and more in this episode that started with a look at this blog post:

https://www.asianturfgrass.com/post/number-between-1-0-using-the-turfgrass-growth-potential/

• See also this on GP and adjustments: https://www.asianturfgrass.com/post/regarding-gp-and-adjustments/
• All posts tagged "growth potential:" https://www.asianturfgrass.com/tag/growth-potential/
• Connect with Geoff on LinkedIn (https://www.linkedin.com/in/geoff-fenn-aa2ba242/) or X (https://x.com/Geoff_Fenn)
• Read more about all kinds of turfgrass topics at https://www.asianturfgrass.com/
• Find a suite of decision-making tools at https://www.paceturf.org/
• Get free ATC newsletters at https://www.asianturfgrass.com/newsletter/

• Turf Without Borders show page: https://turfwb.asianturfgrass.com/