At first appearance, the demand-driven fertilization of STERF seems almost the same as the growth potential (GP) and MLSN approach. If you are not familiar with this approach from STERF, you can download their Precision Fertilisation – from theory to practice, written by Tom Ericsson, Karin Blombäck and Agnar Kvalbein.
When it comes to fearmongering in turfgrass, I’m not sure there is a bigger one than bicarbonate (HCO3-). One often hears of supposed problems associated with bicarbonate. I’m still waiting to see a soil or turfgrass problem associated with this ubiquitous anion.
I measured soil moisture and surface hardness on three fairways, approaches, and greens at a golf course in Thailand in September 2014. The fairways and approaches at this site are seashore paspalum on a sandcap.
This is an extraordinarily good video about grasses, mowing, construction, irrigation, soils, playability, maintenance cost, and more. If you are interested in these topics, watch this interview with Don Mahaffey.
Update: I’m adding a note here today (21 Nov 2017) to correct and clarify about these data. Mike Richardson pointed out to me that the “differences from plots irrigated to field capacity 2X or 6X / wk were small and not significant” in this experiment.