Thanks Riggle - you know your stuff and have been a good friend for years. The deal is >> the majority of lawns in our area are newer ones with high pH clay soils. Loam soil accounts = no problem, but they are the few nowadays.
Pretty much all local (friendly) competitors continue to use "straight ferts" with some slow release. But they do not apply trace elements like we do. Builders have "compaction rates" to abide by via zoning laws. We're talking subsoil/clay soils.
Meantime, we will promote needed nutrients. thoughts?
Proud subscriber of TURF Magazine. (thanks Ron)