[Kustrud]

My delivery just showed up with the real stuff for the first time - Celsius, Prodiamine, and Pro-Sedge!

I know I can and keep reading the directions, but it's a lot so I'd like to hear from people that have this system down!

Prodiamine - After reading the mixing instructions, I am absolutely lost on how to mix this stuff and how much to spray on my yard. I will be using a 3-4 gallon backpack sprayer for applying this. It says .36-.83 ounces per 1000/sq ft. Help plz!
-How much do I mix into a 4 gal sprayer and how thick do I spray this stuff on?
-Can I do when grass is wet?
-Do I need to water in?

Celsius - Little less confusing, will be spot spraying from one gallon sprayer. Says .057-.113 oz per gallon of water.
-What strength should I use here on my GA Bermuda lawn?
-Do I need a surfactant?
-Will Dawn Dish Soap suffice? I noticed after adding some Dawn to my 2,4-D the other day the weeds I sprayed (3 days ago) are already dying.

Appreciate the help and sorry for all the questions. Just looking for a quick instruction rundown from some people who have used these products before as the instructions are very involved on the bottles haha.

 

[Movingshrub]

My delivery just showed up with the real stuff for the first time - Celsius, Prodiamine, and Pro-Sedge!

I know I can and keep reading the directions, but it's a lot so I'd like to hear from people that have this system down!

Prodiamine - After reading the mixing instructions, I am absolutely lost on how to mix this stuff and how much to spray on my yard. I will be using a 3-4 gallon backpack sprayer for applying this. It says .36-.83 ounces per 1000/sq ft. Help plz!
-How much do I mix into a 4 gal sprayer and how thick do I spray this stuff on?
-Can I do when grass is wet?
-Do I need to water in?

Celsius - Little less confusing, will be spot spraying from one gallon sprayer. Says .057-.113 oz per gallon of water.
-What strength should I use here on my GA Bermuda lawn?
-Do I need a surfactant?
-Will Dawn Dish Soap suffice? I noticed after adding some Dawn to my 2,4-D the other day the weeds I sprayed (3 days ago) are already dying.

Appreciate the help and sorry for all the questions. Just looking for a quick instruction rundown from some people who have used these products before as the instructions are very involved on the bottles haha.

Have you measured your yard?

I measured mine into manageable areas; front yard, back yard, left side of the driveway, sidewall strip, etc.

 

[Tellycoleman]

There is alot of info on this forum with many many pages on prodiamine and rate and usage. it will tell you so much more than i ever could.
1) get a gram scale if you dont have one Its so much more accurate and inexpensive and easierwhen you have to measure 0.38 oz
Yes water in your prodiamine.
Do alot of reading on calibrating your sprayer. There isnt a one size fits all everyone is different. Many topics on youtube and this forum on sprayer calibration.

 

[Ware]

For the Prodiamine, 0.83oz per thousand is the max annual rate for Bermuda. You will divide that by the number of applications you plan to make to ensure year round pre-e control. I use two, some use 3-4. I would err on the side of split applications until you get everything under control and are comfortable with your sprayer calibration. The goal is to have a good pre-e barrier at the times when weed germination is most active in your area. The Prodiamine label calls for 1/2" of rainfall or irrigation within 14 days following application. You will need to calibrate your sprayer to determine how much carrier (water) is necessary to apply the appropriate amount of product to your lawn. If you don't know how to do that, read up on it (there are numerous posts about it here on TLF) and come back with any specific questions you may have. We're glad to help.

For the Celsius, 0.113oz per gallon of water to treat 1k square feet is the max rate. Use the label rate for the weed(s) that you are trying to control (they are listed in tables on the label). Here again, you will need to calibrate your sprayer to know how much product you are applying (1 gallon per thousand is a common rate for many products). The Celsius label does recommend adding non-ionic surfactant (NIS) to the spray solution. For difficult to control weeds, they recommend using methylated seed oil (MSO) at a rate of 0.5-1% v/v. I do not use MSO when temps are high. I have never used Dawn dish soap as a spray adjuvant, so I can't help you there. NIS and MSO are cheap, so I use what the product label calls for.

All of this is no substitute for reading and understanding the label yourself though. The only thing scary about most product labels are the number of words and the size of the font. Read them, and come back with any questions you may have. You can do this. :thumbup:

And I echo everything Telly and Movingshrub suggested. :thumbup:

 

[Kustrud]

Got it, appreciate the help everyone!

For the Prodiamine I'm going to mark lawn off into 1k square ft sections. Then start with just using water first and see how a gallon does on each 1k square foot section. Plan would be twice a year and then .415 oz in 1 gallon per 1k square foot section.

On the right track now?

 

[Kustrud]

For the Celsius, 0.113oz per gallon of water to treat 1k square feet is the max rate. Use the label rate for the weed(s) that you are trying to control (they are listed in tables on the label). Here again, you will need to calibrate your sprayer to know how much product you are applying (1 gallon per thousand is a common rate for many products). The Celsius label does recommend adding non-ionic surfactant (NIS) to the spray solution. For difficult to control weeds, they recommend using methylated seed oil (MSO) at a rate of 0.5-1% v/v. I do not use MSO when temps are high. I have never used Dawn dish soap as a spray adjuvant, so I can't help you there. NIS and MSO are cheap, so I use what the product label calls for.

For the Celsius, really just need to spot spray. So I would use the .113oz in a 1 gallon sprayer and then just spot spray, correct?

Sorry for any dumb questions - completely knew to the mix-your-own stuff here!

 

[Ware]

Simon's video is good place to start on sprayer calibration:

https://youtu.be/pQ5U0Y_zPzo

 

[Ware]

For the Celsius, really just need to spot spray. So I would use the .113oz in a 1 gallon sprayer and then just spot spray, correct?

Sorry for any dumb questions - completely new to the mix-your-own stuff here!

Yes, but that 1 gallon should cover ~1,000 square feet. If you sprayed that 0.113oz over 2k, you would be under-applying the product. If you sprayed it over 500ft2, you would be over-applying. Make sense?

From the label:

For spot applications, add the specified product rate of 0.057-0.113 oz (1.6-3.2g) to 1 gallon water. One gallon of spray solution will treat up to 1,000 sq ft.​

And no worries - that's why we're here! :thumbup:

 

[Movingshrub]

My approach, although not exactly perfect, was to figure out how much product I needed to apply over the area, and then figure out the minimum water (which is just designed to be the carrier for the product, especially in the case of pre-em).

My backyard is 7,000 sqft. I applied prodiamine 65WDG at the 0.75lb/acre. That translates into 0.27 ounces of prodiamine, per 1,000 sqft. I have 7,000 sqft so 0.27 * 7 = 1.89 ounces of prodiamine.

The prodiamine directions indicate a minimum of 0.5gallons per 1,000 sqft. So, I'd need to mix 1.89 ounces of product into at least 3.5 gallons of water. You can use more water than that as you want, so long as the entire mixture is evenly spread over the entire area, which results in the prodiamine being evenly applied.

In my case, my sprayer holds 12 gallons. I walk the entire yard - north-south, east-west, and just keep repeating until I've used all the water.

I'd hold off on blanket spraying until you've at least gotten some experience applying the prodiamine.

Lastly, I'd highly discourage blanket Celsius at all unless really needed.

 

[Kustrud]

For the Celsius, really just need to spot spray. So I would use the .113oz in a 1 gallon sprayer and then just spot spray, correct?

Sorry for any dumb questions - completely new to the mix-your-own stuff here!

Yes, but that 1 gallon should cover ~1,000 square feet. If you sprayed that 0.113oz over 2k, you would be under-applying the product. If you sprayed it over 500ft2, you would be over-applying. Make sense?

From the label:

For spot applications, add the specified product rate of 0.057-0.113 oz (1.6-3.2g) to 1 gallon water. One gallon of spray solution will treat up to 1,000 sq ft.​

And no worries - that's why we're here! :thumbup:

Yup got it!

 

[Kustrud]

My approach, although not exactly perfect, was to figure out how much product I needed to apply over the area, and then figure out the minimum water (which is just designed to be the carrier for the product, especially in the case of pre-em).

My backyard is 7,000 sqft. I applied prodiamine 65WDG at the 0.75lb/acre. That translates into 0.27 ounces of prodiamine, per 1,000 sqft. I have 7,000 sqft so 0.27 * 7 = 1.89 ounces of prodiamine.

The prodiamine directions indicate a minimum of 0.5gallons per 1,000 sqft. So, I'd need to mix 1.89 ounces of product into at least 3.5 gallons of water. You can use more water than that as you want, so long as the entire mixture is evenly spread over the entire area, which results in the prodiamine being evenly applied.

In my case, my sprayer holds 12 gallons. I walk the entire yard - north-south, east-west, and just keep repeating until I've used all the water.

I'd hold off on blanket spraying until you've at least gotten some experience applying the prodiamine.

Lastly, I'd highly discourage blanket Celsius at all unless really needed.

Makes sense!

 

[Kustrud]

Can I apply to a wet lawn??

 

[Movingshrub]

Can I apply to a wet lawn??

Can you apply pre-emergent to a wet lawn? For sprayed prodiamine, yes.

 

[Kustrud]

Can I apply to a wet lawn??

Can you apply pre-emergent to a wet lawn? For sprayed prodiamine, yes.

Sweet! Thanks!

 

[Kustrud]

One more thing that has me perplexed. I used this backpack sprayer (which works great) to spray glyphosate around my fence as well as our hunting club food plots prior to planting. I figured I could flush it out and use it for pre-emergent spraying as well.

1. Should I use keep separate sprayers for pre-emergent vs weed killers?

2. See pic - How can I flush this type of sprayer if this bulb inside the tank stays full of water? I'm nervous I'd spray glyphosate on my yard due to never getting it completely flushed. If only using one sprayer and flushing it out would a diaphragm sprayer be a better option?

 

[Movingshrub]

One more thing that has me perplexed. I used this backpack sprayer (which works great) to spray glyphosate around my fence as well as our hunting club food plots prior to planting. I figured I could flush it out and use it for pre-emergent spraying as well.

1. Should I use keep separate sprayers for pre-emergent vs weed killers?

2. See pic - How can I flush this type of sprayer if this bulb inside the tank stays full of water? I'm nervous I'd spray glyphosate on my yard due to never getting it completely flushed. If only using one sprayer and flushing it out would a diaphragm sprayer be a better option?

I can't see the photo due to my work network. With that being said, on a lot of things you can triple rinse and that is more than sufficient.

 

[Kustrud]

One more thing that has me perplexed. I used this backpack sprayer (which works great) to spray glyphosate around my fence as well as our hunting club food plots prior to planting. I figured I could flush it out and use it for pre-emergent spraying as well.

1. Should I use keep separate sprayers for pre-emergent vs weed killers?

2. See pic - How can I flush this type of sprayer if this bulb inside the tank stays full of water? I'm nervous I'd spray glyphosate on my yard due to never getting it completely flushed. If only using one sprayer and flushing it out would a diaphragm sprayer be a better option?

I can't see the photo due to my work network. With that being said, on a lot of things you can triple rinse and that is more than sufficient.

Basically a little tank inside the tank that there is no way to flush. It's always full. I do not see how I could completely remove the glyphosate.

Worst case I could just label this sprayer for glyphosate and get another for the pre-emergent.

 

[Movingshrub]

I'm curious to see what others says, but I'd just run water through it several times.

 

[Ware]

...I'd just run water through it several times.

+1

 

[Kustrud]

What's the shelf life on Celsius if stored inside and not left in hot garage?