This is my first season w/o Turf Care and my 2nd season w/ a lawn I had to maintain so I'm learning a LOT this year. Experienced the joys of no pre-M this year but also believe I needed a fungicide regimen under Turf Care and now. I put down a Group 3 a while back and it solved an early onset of rust. Unfortunately, I believe I have brown patch and leaf spot after the cool nights, rains, and humidity.
My Group 3 will work but it is recommended to switch up which group is used so the bastards are less likely to develop a resistance to it. Hot damn....Group 11's are pricey. Looks like Azoxy 50 WDG will be the most cost effective at $188/16oz.
For weeds, I'll likely used either Dimension and/or Prodiamine as pre-M's. I found a local nursery that sells a 25-0-5 fert (prills) that has Dimension as part of the mix. I'll use that for my late spring fert. Then use Prodiamine as a follow-on pre-M late summer.
For spot (or blanket) spraying, I've been using either Q4+ or T-zone. It just depends on what is coming up in my lawn. The latter is cheaper and does a # of broadleaf weeds but the former will handle a wider array of broadleaf (incl crabgrass). I bought a big jug of both from Lawn & Pest Control Supply. I use it in conjunction w/ Signal (blue dye) so I can see what/where I've sprayed.
https://www.lawnandpestcontrolsupply...iant=289408798
https://www.lawnandpestcontrolsupply...105eb386&_ss=r
https://www.lawnandpestcontrolsupply...a46e98d2&_ss=r
https://www.lawnandpestcontrolsupply...5e16f98a&_ss=r
https://www.domyown.com/prime-source...e-p-12184.html