need help mixing Dismiss

[fireman1173005]

Ok I am going to be using Dismiss in my new backpack sprayer for spot spraying, therefore I don't really know how many square feet I am going to be spraying. On the label it says to apply 12oz./acre or 0.275oz./1,000square ft. But it does not tell how much to mix per gallon. So how would I mix it. I know that if I were mixing it in my skid sprayer I would put 0.1375oz/gallon because I have it calibrated for 2gal./1,000sq. ft. Any help would be appreciated.

Brian

[jose85]

i believe i was using it at half an oz so 2 oz makes 4 gals

[fireman1173005]

so is that for Bermuda grass? I assume that is 0.275oz./1,000

[jose85]

yes sir it works great too

[Please_Be_Green]

i believe i was using it at half an oz so 2 oz makes 4 gals

I'm no pro... Isn't this like a 3x concentrated rate?... I realize this is for spot treating... but...

At this rate...

If your spraying 2 gals / 1000sq/ft...

aren't you putting down 1oz of AI per 1000?

which would be .725 more AI per 1000... of the maximum single application use rate.

shouldn't the concentration be the same?

.275 oz per 2 gallons of water?

So adding .55oz per 4 gallons...

if you went out and sprayed 2 gallons of product over 1000sq/ft you'd be applying the .275oz Max Single App Use Rate...

I could be way off... I'm very interested.

[jose85]

**** i dont know man ...that was lesco told me to do it...when it first came out and work great.. but you do have a great point

[Please_Be_Green]

**** i dont know man ...that was lesco told me to do it...when it first came out and work great..

I'm sure it would work like a dream at that concentration...

Honestly though, I do more math when I'm trying to figure this stuff out and I'm not sure if I'm correct either...

Since I only spray 15k I'm always breaking things down in 1000sq/ft sections. I know if I'm supposed to be spraying "X"oz / 1000sq/ft, if I only add "X"oz to my sprayer and spray it evenly over 1000 sq/ft then I've applied the correct amount.

You could add .275oz per gallon, but if you were to spray 1000sq/ft, you'll only spray 1 gallon of liquid. Not sure you'd get the coverage with that small amount of water...

but what do I know... I'm just reading the label and trying to figure this out.

[Think Green]

Brian,
#1 Fill the backpack sprayer with water, then get a 5 gallon bucket and pour the water into the bucket. Mark the area with a sharpie to where the water line is.
#2 Time yourself spraying a 20X50 area with the water, walking at a constant pace and pumping as needed for consistant pressure.
#3 Spray into the 5 gallon bucket the same amount of time while assuring the same amount of pressure.
This should be your rate per K.
Adjust your cone or flat fan to accomodate your output rate.

If you applied 1/2 gallon per 1,000 then add 0.3 oz X gallons in your tank.
Typical tank holds 4 gallons, then add 1.2 oz to the tank.

[jose85]

Brian,
#1 Fill the backpack sprayer with water, then get a 5 gallon bucket and pour the water into the bucket. Mark the area with a sharpie to where the water line is.
#2 Time yourself spraying a 20X50 area with the water, walking at a constant pace and pumping as needed for consistant pressure.
#3 Spray into the 5 gallon bucket the same amount of time while assuring the same amount of pressure.
This should be your rate per K.
Adjust your cone or flat fan to accomodate your output rate.

If you applied 1/2 gallon per 1,000 then add 0.3 oz X gallons in your tank.
Typical tank holds 4 gallons, then add 1.2 oz to the tank.

yea i think that right...i think it was 1.5 for the 4 gals and i was using 2 :):hammerhead:

[Please_Be_Green]

Brian,
#1 Fill the backpack sprayer with water, then get a 5 gallon bucket and pour the water into the bucket. Mark the area with a sharpie to where the water line is.
#2 Time yourself spraying a 20X50 area with the water, walking at a constant pace and pumping as needed for consistant pressure.
#3 Spray into the 5 gallon bucket the same amount of time while assuring the same amount of pressure.
This should be your rate per K.
Adjust your cone or flat fan to accomodate your output rate.

If you applied 1/2 gallon per 1,000 then add 0.3 oz X gallons in your tank.
Typical tank holds 4 gallons, then add 1.2 oz to the tank.

Please help me understand this math...

With the above example...

You'd only be applying .15oz AI per 1000sq/ft? No?

1.2oz AI inside the tank, 4 gallons of mix, covering 8000 sq/ft

1.2 / 8 = .15oz per 1000sq/ft

This seems kind of light for warm season grasses per the OP's original skid mix concentration...

However, for cool season grasses this is dead on.

[RAlmaroad]

I mix a little lean and also to help the math. I don't know if you can accurately measure .2 of an ounce with that thick liquid. So I've used Dismiss at .25/K. on centipede and St. Augustine grass. With sprayer output at 2 gal/K that's 1 ounce to 8 gallons of water. I never spot spray and only blanket occasionally now that the weeds are under control.