Man vs Wild (Poa trivialis)

Kentucky bluegrass, Fescue, Rye and Bent, etc
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wopr
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Man vs Wild (Poa trivialis)

Post by wopr » March 20th, 2015, 6:05 pm

I thought I had some Poa annua in the front yard so decided to hit it with Tenacity three weeks ago. That's when I discovered I have more Poa trivialis than annua thanks to the feedback from this forum.

I applied a second application of Tenacity two weeks after the first application. At this point, I'm not sure what I will do next. Glyphosate is definitely being considered but I will not be able to reseed those areas until fall.

wopr
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Re: Man vs Wild (Poa trivialis)

Post by wopr » March 20th, 2015, 6:07 pm

ImageUploadedByYard Help1426889155.597060.jpg
ImageUploadedByYard Help1426889174.845222.jpg
ImageUploadedByYard Help1426889192.316619.jpg
Two weeks after first application.

wopr
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Re: Man vs Wild (Poa trivialis)

Post by wopr » March 20th, 2015, 6:08 pm

ImageUploadedByYard Help1426889249.889134.jpg
ImageUploadedByYard Help1426889261.040924.jpg
Three weeks after first application and one week after second.

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andy10917
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Re: Man vs Wild (Poa trivialis)

Post by andy10917 » March 20th, 2015, 6:44 pm

Ugh. That's a lot of Triv and Annua. I feel for you - I've been there.

With TTTF, "Certainty" isn't for you. Short of RoundUp, there isn't that much to offer in the way of selective treatments - that's too much to handle by manual removal.

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Re: Man vs Wild (Poa trivialis)

Post by nclawnguy » March 20th, 2015, 6:52 pm

The problem with poa triv is you can only successfully kill it when its actively growing. That means spring and sometimes fall if it reappears. The problem with killing now is spring is not ideal for GA for seeding cool season grass.

Last spring I hit my triv hard with tenacity, apps every 3 days for a couple weeks. It got knocked down and went into remission for the summer. In the summer I nuked my whole lawn, 3-4 apps of round up. I seeding kbg and didn't see any triv until last month in the same spots. Now it came back much less than lasy year, but after laying dormant for 10 months, it came back.

This spring I am experimenting with certainty, which cannot be used on tttf, but supposed to kill triv. You're only 2 options are to hit it into dormancy with tenancity and just deal with it every year. Our summers are hot and will not be there once the heat sets in, but will come back in the fall and/or spring. Or you can round up and reseed.

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wopr
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Re: Man vs Wild (Poa trivialis)

Post by wopr » March 20th, 2015, 7:33 pm

When I bought this house a few years ago, the first two years, the whole front yard was covered with japanese stiltgrass. Now it makes sense why Poa triv and japanese stiltgrass are all over the front yard and not the backyard since the front gets more shade and remains moist longer than the backyard. I never thought I would find a weed I dislike more than japanese stiltgrass.

In the back I'm dealing with quackgrass. That's another story.

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Re: Man vs Wild (Poa trivialis)

Post by andy10917 » March 20th, 2015, 9:30 pm

I never thought I would find a weed I dislike more than japanese stiltgrass.
I've had both. Stiltgrass is a cakewalk compared to Triv.

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Re: Man vs Wild (Poa trivialis)

Post by wopr » March 23rd, 2015, 6:29 pm

March 23
ImageUploadedByYard Help1427149739.098375.jpg
ImageUploadedByYard Help1427149754.195809.jpg
ImageUploadedByYard Help1427149768.913467.jpg

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nclawnguy
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Re: Man vs Wild (Poa trivialis)

Post by nclawnguy » March 23rd, 2015, 8:55 pm

Nice and white

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Re: Man vs Wild (Poa trivialis)

Post by ligrass » March 23rd, 2015, 9:19 pm

What sucks is your lawn looks pretty damn nice minus the crap Triv.

wopr, I'm curious, do you have a picture from last spring? I'm wondering if you saw anything to suspect Triv (especially the really dense patches)? Or did this spread like crazy from a small amount over the year.

From my experience, it's hard to miss the patches when it's in hyper growth mode (without tenacity).

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Re: Man vs Wild (Poa trivialis)

Post by HoosierLawnGnome » March 23rd, 2015, 9:26 pm

Do you have enought turf to glyphosate the CRAPP out of it, then move plugs in from uninfected areas with some seeding mixed in?

If you really want to go postal on it, you could dig it out too - and replace with good topsoil, THEN move plugs in...)

It might close in by father's day if you can pull that off...

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HoosierLawnGnome
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Re: Man vs Wild (Poa trivialis)

Post by HoosierLawnGnome » March 23rd, 2015, 9:29 pm

I'm sorry - I thought you had KBG - you have TTTF which won't spread that fast.... NEVER MIND. :banghead:

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Othertime
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Re: Man vs Wild (Poa trivialis)

Post by Othertime » March 23rd, 2015, 9:32 pm

Those pictures make me shudder :shock:

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Re: Man vs Wild (Poa trivialis)

Post by BoatDr » March 23rd, 2015, 11:57 pm

HoosierLawnGnome wrote:I thought you had KBG - . :banghead:
Yes, but if he seeded, fescue will pop up in mere days. Do you have a postal....I mean post hole digger ?


- Sent From My Sandlot.

wopr
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Re: Man vs Wild (Poa trivialis)

Post by wopr » March 24th, 2015, 9:12 am

I knew I had some triv but NOT that much. I didn't know about tenacity until last fall. Tried one treatment and did see some spots that I already knew about. But come last month I could really see it much better since it was outgrowing the fescue and was not as dark in color. Then I applied the first treatment of tenacity on Feb 28, which is when I discovered I have a bigger problem.

I've already dropped prodiamine so I won't be able to overseed until fall.

I still have not decided if I will nuke it with roundup or apply a few more treatments of tenacity or both. If roundup, I'll need to decide soon before the triv goes dormant.

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Re: Man vs Wild (Poa trivialis)

Post by Billybob » March 24th, 2015, 3:58 pm

Aw man that's sucks. It's a beast to get rid of and spreads quick. I would bite bullet and nuke it. I hit it with round up two years ago n still get patches come back.

When u get some control, in a few years ( sorry but takes time) I would yank the smaller patches. I have mostly TTTF too, so doesn't spread.

The good news is, sorry can't think of any. Good luck

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Re: Man vs Wild (Poa trivialis)

Post by crabgrass » March 24th, 2015, 4:04 pm

Stupid idea:

I just posted about a rope wick to apply glysophate to taller weeds. Could he carefully apply with a rope wick, then drop seed the next day. If he kept on it with the glysophate in Spring and Fall when it is noticeably taller, and white from Tenacity, would that drive down the population? I am talking like weekly apps of gly the day before mowing.

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Re: Man vs Wild (Poa trivialis)

Post by gave20 » March 24th, 2015, 6:38 pm

I had very good success using velocity to control triv in my tttf.

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Re: Man vs Wild (Poa trivialis)

Post by Billybob » March 24th, 2015, 8:34 pm

Isn't Velocity extremely expensive or is there generic now?

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Re: Man vs Wild (Poa trivialis)

Post by nclawnguy » March 24th, 2015, 8:42 pm

Billybob wrote:Isn't Velocity extremely expensive or is there generic now?

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I Don't think so, when I was looking last year it was very hard to source. I found a seller, but it was around $700.

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