Asked September 16, 2024, 2:52 PM EDT
Good afternoon. I'm curious how best to treat post emergent poa annua in a 4 cultivar perennial rye lawn. I'm in the kalamazoo area, soil test is fine, I renovated with good soil/sand, irrigate regularly but based on ETO, treat with ammonium sulfate and natural things like kelp, molasses etc.
I didnt blanket spray herbicide or pre-emergent this year but have been spot treating with a speedzone/quonclorac blend. I also have a halosalfuron herbicide for yellow nutsedge.
I'm wondering my options short of doing a glyphosate spot treatment.
Caveat being I overseeded on August 18th. I've read on the prodiamine label that I need to wait 60 days after overseed before application.
I have resisted using tenacity as a blanket spray due to my lawn being all perennial rye, Tenacity tends to damage rye according to its label, however I have come to terms that I may need short term visual damage if mesotrione is the answer.
I'm curious what you recommend in terms of what I can do with our average first frost being approx a month out.
Thanks so much for your time!
Kalamazoo County Michigan