I’m seeing more and more sedges starting in round 2( early green up). Need to address options and may consider certainty for broad spectrum weeds.

If I could get 3 apps I’d dismiss at 4 oz each I might build a residual but don’t have the blanket apps within my program.

 

I use this on brand new customers on round 1/2 (which is February to late March, first week in April in a cold year for me) along with Monument. I'm using it for faster burn-down of tall broadleaf weeds and to broaden the spectrum of control a bit. Only using it on fully dormant turf because I also add in 0.5oz/G MSO per the Monument label. Basically this is a early spring clean-up app where there are lots of both monocot and broadleaf weeds present and I want the widest spectrum of control possible.

I'm also only dealing with Bermuda or very rarely St. Augustine turf. No Centipede.

When the grass is actively growing I never use a surfactant with dismiss. You will definitely, 100% see damage to actively growing turf using any kind of surfactant with sulfentrazone, which really limits its use to spot sprays for sedges and maybe oxalis. I don't use it much in the summer since my warm season program has Monument as a blanket during round 2. I find I get almost full-season sedge control with 1 app of Monument during transition, and there are safer controls than dismiss during the summer months, (Celsius, MSM, etc).

 

Good info. Heard good things about monument but I can't afford it even as a spot spray!!

 

Am thinking of using Dismiss NXT on some of my worst case lawns. In reading the label I've come up with some questions. First, has anyone tried the addition of MSM? I noticed that Bahiagrass is a tolerant species. MSM is my "go to" for Bahiagrass(control) and we have plenty of it around here since many of my country lawns were carved out of pastureland. Secondly, if I were to use MSM in combination, how about surfactant? MSM recommends the use of it but Dismiss warns against it? Maybe a reduced rate of the MSO that I use currently? Temporary yellowing is expected and acceptable, Browning of turf is not. I'm looking to kill the most weeds with the least number of products in the mix. Dismiss NXT looks very good overall with just a couple of shortcomings as far as the weeds it controls vs. suppresses. I feel like with a little help from the occasional bit of MSM or possibly 3-way, weed control could be awesome.

Any shared past experience or knowledge would be appreciated.

 

We’ve used dismiss on sedges in very hot weather and it dings up bermuda pretty good

 

We've used dismiss on sedges in very hot weather and it dings up bermuda pretty good

It has been bumping all around the low 90's for better than a week now. I will spray some out in my mowed pasture today and see what happens. Got some buttonweed, lespedeza and sedges out there.

like I said, yellowing for a couple mowings is to be expected. 4 mowings to get rid of heavy tip burn is not acceptable. We use T-jet fan tips and apply about .65 gal/1000 with our electric backpacks.

By the word "ding". Can you give me an idea of where we are on that spectrum??

 

Well, 1 oz Dismiss NXT, 1oz MSO and 2/3 teaspoon MSM per 3 gal fill sprayed from electric backpack with fan tip on Lespedeza, Virginia Buttonweed, Path Rush, Oxalis and Yellow Nutsedge and a couple others I don't know the names of. Applied to Common Bermuda.

I'll see what happens

 

1oz dismiss in 3 gal of water at I'm presuming 0.5gal/k? That's super super hot. Expect more than just yellowing, you're going to get stunted brown grass everywhere you sprayed. Bermuda will recover within a few weeks, though. All the stuff you listed will die, so at least there's that.

I don't go over 0.1oz/k with dismiss; I treat it as a kicker to get faster burn down of something I'm already targeting with something else. It is very hard on warm season stuff. Even at 0.1oz/k I get burndown within 48h on noxious stuff, no reason to go higher IMO. I've sprayed yellow and purple nutsedge with dismiss alone at 0.1oz/k and they're brown within a couple days. It's really good stuff, just have to be pretty careful with it.

 

Greendoctor recently posted that he uses Dismiss at low rate with MSO, and it is effective as Dismiss alone at high rate.

Maybe he'll chime in to verify.

 

Very true. On Bermuda and Zoysia, I have used Monument 15 g. + Dismiss at 4 oz. Monument is slow, Dismiss keeps my phone from ringing about weeds not dead yet or have I treated yet? This is combined with 1/2% MSO and applied before daytime temperatures are above 85. Dismiss + a surfactant in hot weather will cause extensive scorching of the grass. In cooler weather, the tip burn is the kind I can mow off in one mowing. Other option is Image. This is another pre for sedges and many other weeds in Soybeans. Wasted if spot sprayed. Yards treated with Image broadcast are different. No sedges and many other nuisance broadleaves other than Spurges and Oxalis are not there. That is a feat in my area where weeds grow 12 months out of the year and keep emerging all 12 months while the previous generation becomes perennial.

 

Yeah, for sure I am not spraying Monument as a post for sedges. I use it as a transition blanket app to control a variety of things. I want it to be a bit slow as it transitions overseeded rye and patches of fescue as the bermuda comes out of dormancy. The pre-control of sedges is just a bonus.

When I need fast post controls I mix in 0.1oz/k sulfentrazone. It's a 48h burn-down on anything on its label. That's why I use it for new customers that want to see results in the next couple days after your truck pulls away.

Image is no longer made, also the last label I had for it was ornamental beds only. Was also a great product, sorry to see it go. That was my go-to for sedge control in beds for many years.

 

I substitute 0.25% water based non ionic surfactant if I am spraying when temperatures are at or above 85%. Oil based surfactants have always caused a lot of burning in warm weather no matter what the herbicide. An NIS + Dismiss + an SU herbicide above 85 causes at worst, a little bit of tip burn that mows off. It might be different if you are spot spraying. I am not, so the lawn has a little brown at the very tip. Hard to tell between a lack of water or herbicide burn at that rate. If you spot spray, every spot turns brown.

 

We spot spray. We use fan tips held just above the knee and when temps rise, we use just a wisk. Discoloration is usually slight and we are spraying Certainty and MSM as part of our spot treatment mix. One mowing and the fert has greened it up and the weeds are controlled/suppressed. No need for broadcast apps of expensive herbicides in most of our lawns, many of which are in the 20-30,000 ft sq range. It would be a waste of chemical

I will try the non ionic surfactant instead of the MSO.

I don't think we can afford to use Monument in a broadcast app with the amount of acreage we cover no matter how great it is for nutgrass. It's tough enough to swing paying for Specticle in order to try to keep Fireweed at bay. Talk about a PITA. I should take pictures of some of my competitors lawns full of that stuff right now...
25 yrs ago, very little of it. Now...like flea infestation on a pet in many lawns

 

whats your rate and timing for specticle for fireweed? (No weed will get you fired faster than fireweed!)
Fireweed is an easy kill post, but timing is everything with it. You can't get all your lawns sprayed by the time it becomes noticeable and unsightly. I was thinking of trying specticle in early spring next year in trying to prevent it.
To add to the title topic, I've added MSO to dismiss south for dallis grass, just to play around with it. Scorched the Bermuda bad. Both recovered quickly though.
Also common Bermuda tolerates some herbicides differently than hybrid

 

whats your rate and timing for specticle for fireweed? (No weed will get you fired faster than fireweed!)
Fireweed is an easy kill post, but timing is everything with it. You can't get all your lawns sprayed by the time it becomes noticeable and unsightly. I was thinking of trying specticle in early spring next year in trying to prevent it.
To add to the title topic, I've added MSO to dismiss south for dallis grass, just to play around with it. Scorched the Bermuda bad. Both recovered quickly though.
Also common Bermuda tolerates some herbicides differently than hybrid

We use Specticle in the fall. Split app of 4oz per acre 2x 6/7 weeks apart. 2nd yr in a row and no fireweed.

 

1. I wouldnt add mso to Dismiss as the labels states not to, and it will scorch it.
2. Dismiss @ 8oz/A + 1/2#/A of prodiamine has provided 6 months and counting control on sedges. This is only on bermudagrass.
3. Avoid spraying specticle on weak areas in turf.
4. If you want to add something to Dismiss, just add Carfentrazone @ .25oz/A

 

Let us know how that works out. What rate, day high temps & etc.

I sprayed my neighbors lawn yesterday with half the rate of Dismiss NXT I used on my pasture and used an equivalent amount of Drexel 80/20 instead of MSO.

So, I mixed a 3 gal backpack with 1 tsp Dismiss NXT, 1 tsp of surfactant and 3/4 tsp MSM. Already seeing sedges turning, oxalis singed on top and curling underneath that. Tips of lespedeza patches are curled. No turf discoloration so far

Seeing a little singe on the tips of the bermuda in the ole pasture after spraying this past Saturday at the 1oz rate

Upper 80's today
98% humidity right now. (2% more and I'd be breathing water...right?)

 

Seeing a little singe on the tips of the bermuda in the ole pasture after spraying this past Saturday at the 1oz rate

Upper 80's today
98% humidity right now. (2% more and I'd be breathing water...right?)

1 oz. per ??