I use Hi-yield Spreader Sticker form Ace Hardware.

Label says 0.25 to 0.50% v/v. That means for every gallon of water use 0.32 to 0.64 oz or 2 to 4 teaspoons.

Do not use NIS when temps are going to be above 85 or so, it will drastically increase chances of chlorosis and stunted growth in turf.

In other words, in Louisiana do not use surfactant with Celsius from mid May until mid Sept

 

Why does it not list a temperature limitation on the label for Spreader Sticker? I would like to use Certainty for some sedge clusters, but I have fear of burning if using surfactant. The only place I ever see surfactant temp warnings are forums like this.

If I spray in the evening/night when temps drop below 90, would that prevent or mitigate lawn damage?

Wanting to mix High Yield Spreader Sticker and Certainty.

 

I sprayed it this week and did not use a surfactant. Used it last year also without and had good results.

 

Just spray without surfactant. It’ll work just fine. There’s a reason it says not to use surfactant above 85 alongside Celsius/certainty like mentioned above.

 

It’s not the surfactant per se, it’s the Celsius will be getting into the blades better which will control the weeds better but at the expense of your turf.

 

Damn i saw this article one day too late. Just sprayed and used the surfactant with Celsius and Sledgehammer like the Sledgehammer instructions said. Oh well too late now. Hopefully want damage to much.

 

I thought the advantage of Celsius is there are no temperature restrictions.

 

That’s by itself. Not when adding NIS like mentioned above

 

Sedgehammer in the packet has a NIS in it already, bottle does not. Celsius in full summer with NIS takes more than a few mowings to recover unless the grass is very healthy And you get regular watering or rain.

 

I've made the same mistake using Celsius and Sulfentrazone with a surfactant. It recovered pretty quickly but we were getting regular rain showers that really helped it along. I also had some urea in the mix so that also pushed it out of the damage.

 

I'm watering heavy everymorining in this hot weather so hopefully it will recover quickly if it gets dinged too bad. Lesson learned stay away from the surfactant in hot weather.

 

Real issue is spot spraying what should be broadcast applied. If broadcast applied, there are no issues with including 0.25% NIS or 0.5% MSO. Problem is when someone is spot spraying, they spray heavily in each spot and burn holes in the lawn. Even the professional lawn care people tend to do that, so when that happens, any surfactant magnifies any adverse effect on the turf. Label is then written for people who spot spray and will burn holes in the turf rather than broadcast spray through properly calibrated equipment. I want to go ballistic when I see questions about "how much per gallon?" Real question should be how much product per 1000 sq ft or per acre. When I see the question "how much per gallon?" I then ask if that person should even be trusted with a product. Because that is an indicator they have no concept of calibrated broadcast applications.

 

And to add to this, if I spot spray in the lawn, I use the same methods I use in my blanket spray. That is, properly calibrated sprayer, with the correct nozzle, at the correct height and walking speed. The spot spraying while in motion is the tricky part since you have to see your target before you get to it . If I miss my chance at the target then I make another approach so I can get it the second time.

 

5 days in now and starting to see some yellowing on the weeds but no damage to the bermuda from the surfactant In this very hot heat wave we are having at the moment i am watering every morning 4 am 19 minis and a 30 min soak repeated 3 times for 56 minis of actual watering.