I used to tell people that GP is just a number, and if they wanted to modify it to fit the way grass grows at their location, then go ahead and do so. I don't say that anymore. Instead, I recommend using the standard equation. Why? To facilitate direct comparisons between sites, knowing that everyone has used the same equation.

I discussed this blog post: https://www.asianturfgrass.com/post/regarding-gp-and-adjustments/

PACE Turf's updated listing of turf diagnostic labs is available at: https://www.paceturf.org/public/turf_diagnostic_labs

Read more about OM246 tests at: https://www.asianturfgrass.com/project/om246/

• 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/

Find Turf Without Borders at https://turfwb.asianturfgrass.com/
More about ATC soil tests at https://www.asianturfgrass.com/project/soil-tests/