Tenacity vs Poa Trivialis: Your Results

[GaryCinChicago]

Someone with more experience than I would have to comment on any advantages of doing an 8 oz/acre dose.

Purdue University does that.

[NiciPicki]

Well, I SUPPOSE they could qualify....

[ Post made via Android ]

[sc4dr]

I did an 8 oz blanket app last year to kill a ton of nimble will when I overseeded 7k sf. It was mostly tttf. It bleached it hard, but it also killed all the undesirables, and kept weeds out while it getminated

[ Post made via iPhone ]

[paulr]

Nimblewill might need two apps, a month apart. That's what I'm seeing with some of mine. Nimblewill is a tough customer.

[sc4dr]

I can assure you that an 8oz app kills nimblewill in one lick! It was amazing, because before tenacity, only ru killed nimblewill. When I heard tenacity was available to the public, I drove my butt down to jdl and got some. I followed the label at full strength because I didn't know any better yet. Label rate is 8 oz/acre, and I realized afterwards that it's better to do multiple light apps instead of one big hit. But I learned first hand all the different results from various dosing rates.

I also sprayed the nimblewill when the weather was optimal, which might be part of my success.

[ Post made via iPhone ]

[andy10917]

It's murder on Nimblewill, but a slow kill. If you have patience, it will get it in one shot, generally. But it may take 30 days to finish the kill. I suspect Nimblewill has a S-L-O-W metabolism.

[sc4dr]

Yup yup. It hung around for a while, but every time I mowed the yard just kept getting better.

[ Post made via iPhone ]

[Pirate Russ]

In regards to POA Trivialis, is it better to hit it in Fall or Spring? I would think spring would be good because if you injure it, the summer heat then might wipe it out. Also, since many of us spot spray, I would think we might be guilty of going over the 16oz acre rate. Do we know what the issues are when we go over that rate?
I can't believe how much i have right now. Last year, I knew i had some in my renovation, but I believe I have significantly more now. Does it continue to get worse or does it eventually slow down? I can assure you I will not be disturbing the soil again.

[schreibdave]

In regards to POA Trivialis, is it better to hit it in Fall or Spring?

I think you need to spot spray whenever and wherever you see it. I have tried blanket sprays in both spring and fall and neither were successful at preventing it from growing back.

[nclawnguy]

Old thread I know - Any Updates?

I purchased a bottle on tenacity 2 years ago and this week I finally decided to try it. The reason is my triv spots, which I have had for years, now have decided to really take off with the very wet weather we had this past year. Also, last summer was very cool down here, so it really didn't take a hit like it usually does. Anyways, I was going to try 1/2 rate apps every 10 days and see if that helps, if not i will have to kill off and will go for the round up. I have about 10-12 spots this I will hit and see what results I get.

Also, I am very aware that tenacity is not labeled for poa triv and results are mixed at best.

[ericgautier]

For those who have used Tenacity, how long can a "mix" last in the sprayer (say if I don't finish what I've mixed in. IE: spot treatment)? Thanks.

[andy10917]

Quite a while.

[Green]

Quite a while.

This was my question, too as I'm going to be using Tenacity for the first time in a few weeks. If that means weeks, great.

But I like to rinse the nozzle out after each use though. Might be impossible to keep mix AND flush the nozzle/tubing.

[nclawnguy]

how long before you see the whitening?

[andy10917]

Old thread I know - Any Updates?

The latest update is that it still doesn't work. You'll be on here bragging in 6-7 weeks, and cursing 6-7 weeks after that. The stuff (Triv) is the gift that keeps on giving...

[Green]

I had good results (which lasted the entire season) using a cocktail spot spray in a very tight pattern last April. (I know, Andy, you aren't fond of cocktails for many reasons.) But the Triv turned tan, went into remission, and the other grasses in the area filled in the holes.

However, the soil was disturbed in September/October, and after that I saw hints of it coming back. Not in the exact same spots, but similar. Tomorrow it will be dry enough to go our and take a look. If it's coming back, I may shoot it with a tiny bit of cocktail again...and then the entire lawn is going to be sprayed with Tenacity later this month or in May to get rid of Bentgrass...I figure it can only help against the Triv, if anything.

[HoosierLawnGnome]

it must be poa trivalis time. i think im noticing some in one area. im going straight to glyphosate on a glove and then hand pullung as most of mine is slighly taller than my blueberry right now.

[ Post made via Android ]

[nclawnguy]

What was your cocktail Green?

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[teaggs]

I sprayed WBG max and CCO on some of mine and put glyphosate 41% with a glove on heavier areas. I have it bad on about a 300 square ft area. If it doesnt show improvement ill kill the whole area.

[ Post made via Android ]

[Green]

I sprayed WBG max and CCO on some of mine and put glyphosate 41% with a glove on heavier areas. I have it bad on about a 300 square ft area. If it doesnt show improvement ill kill the whole area.

[ Post made via Android ]

That's the cocktail I was talking about (minus the glyphosate). Spot sprayed at high concentration...probably too high. But it killed it and not much of the good grass (it was not too long after green-up). Probably didn't kill all the stolons, but it turned from a lawn with 40 Triv spots to just some blended in.

This year, if I have to, I'll repeat that...and then follow with Tenacity. I feel like if the soil hadn't been disturbed, it'd be in better shape now. There are probably 10 or so Triv patches this year...down from 40+ last year.