Rough bluegrass (Poa trivialis) is a perennial cool-season grass that’s a problematic weed in cool-season turfs. It leaves a thick, light green mat of grass which can choke out the lawn. 2 Responses. For everyone else: Posting this to show my experience with Tenacity on Triv. Poa trivialis: a perennial that tends to get infected by dollar spot and then go dormant in late June through August. Also, I don't have Velocity which I understand will kill it if sprayed in the spring without killing my Tall Fescue.
Tenacity: A New Weapon in the Poa Annua Battle By Bruce Branham, Ph.D. C ontrolling annual bluegrass (Poa annua) has been a challenge for turf-grass managers since we began managing it. Poa Triv does NOT go to seed at normal mowing heights (up to 4"). Apply 7-10 days appart when the weed is actively growing. Re: Tenacity Article: Poa Annua/Poa Trivialis Post by greenbum » October 1st, 2015, 11:58 am If I read it correctly, I would need 3 times a week apps, at the 1.6oz rate, for a total of 10 apps, starting on 10/1 every year, to have 98% control over my poa. According to our local sod man and main landscaper for the area, I have several forms of Poa and he recommends Tenacity. Control of Poa trivialisby Velocity 17.6SG when applied over newly‐seeded Poa trivialis and rated 8WAE. While I positively adore the results that I have seen for "Tenacity vs Poa Annua", I personally have experienced that the "Tenacity vs Poa Trivialis" battle is not as successful. The most recent chemical control for Poa annua control … Tenacity for Poa Annua Treatment - Treating problem weeds like Poa Annua, Nimblewill, and Bentgrass takes frequent - low dose applications. After looking at several golf turf web sites they say they have had success with Tenacity (Mesotrione) on Poa Trivialis and other forms of Poa. The Staff November 12, 2010 5202 views. Bent grass has invaded my lawn but I’m controlling it with Tenacity. It dies off in the summer heat and can look like grass getting a fungal disease. Both bentgrass and poa annua may be sensitive to Tenacity, while Kentucky Bluegrass is listed as tolerant. If annua is your primary issue Tenacity is the way to go (with pre-M and possibly ethofumesate) and it … Poa Trivialis (aka Rough Bluegrass) is similar to Poa Annua but is harder to kill. The species fades sooner in summer than other grasses because of intolerance to heat, drought and diseases, but differences in color, texture and growth habit also make it noticeable to turf managers and golfers. If poa-a is your problem than Tenacity will work better. Because they are in the bluegrass family, poa annua and poa trivialis are more difficult to treat than standard weeds due to the limited types of selective herbicides that target poa without damaging the desired species of turf in the lawn.
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