I explain why I recommend collecting soil nutrient samples to a 10 cm (4 inch depth). I also discuss the importance of repeated soil sampling in order to check the change in test results over time. I look at a photo gallery from the 2025 Danish Golf Championship.
Posts discussed include:
PACE Turf post about Vixen 7x stand loupes: https://www.paceturf.org/memberedition/where-to-find-small-magnifying-loupes
Find out more about soil tests with ATC at https://www.asianturfgrass.com/project/soil-tests/