Soil nutrient levels might change more rapidly than you realize. This has implications for whether nutrients should be applied as fertilizer, or not. I showed data from an experiment I did when I was a graduate student in this blog post:

https://www.asianturfgrass.com/post/soil-nutrient-levels-change/

Jason Haines has written about a similar topic, and explained it perhaps more clearly than I have. I recommend his blog post on "Do you have enough?": https://fusariummy.blogspot.com/2023/02/do-you-have-enough.html

To read more about this experiment, see this chapter in my dissertation: http://archive.lib.msu.edu/tic/thesdiss/woods2006h.pdf

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