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Best Chem for Cracks and Crevices, parking lots, etc?

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rbljack

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Discussion starter · #1 ·
first off, I do have appl license...so that's out of the way. I'm looking for your preferred chemical for Pre/post emergent control of weeds in the cracks and crevices of sidewalks, driveways, etc. I have a few commercial properties which are banks and they have concrete lots with expansion gaps throughout the lot. LOTS of linear feet of them with weeds already coming up.

I used RM43 weed killer last year, and it did ok, but I really don't think it did much as a Pre emergent. It killed what was there, but weak on Pre-em control moving forward. It makes sense though, because the level of Imazapyr is so low.

What would yall suggest for a preferred chemical to kill weeds, and keep them from coming back in these areas. I'm looking for a chemical designed to be used in these areas according to the label so I don't run into any issues. I'm sure there are lots of solutions to the problem, but I want to ensure I'm following the labels in case of an audit/inspection stop. They do happen from time to time in our area.

Thanks!
 
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Discussion starter · #3 ·
I guess I should add....my original thought was to add prodiamine but in reading the label, it doesn't say anything about that type of application that I can find specifically (parking lots, sidewalks, etc) so that option is out.
 
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#4 ·
There lots of options Imazapyr is one you can buy a jug and mix it your self with round up just remember it can move. I used Oryzalin and gly it's cheap (and its orange so you can see what you have sprayed ) it will keep most things out but not dandelions. no matter what you use you will have to do 2 apps at least that has been my experience
 
#7 ·
Imazapyr moves. So does Glyphosate that has not contacted soil. It moves so much that whatever is sprayed on hard surfaces is usually detected in waterways. My preferred weed control involves a propane torch.
 
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Discussion starter · #8 ·
yeah I thought about a torch, but our area gets very dry. In fact, we are in a fire danger right now due to drought, so I was hesitant to pull out the propane torch. And with the torch, I don't get a pre emergent long term solution. Wind blows the seeds right back in the cracks, and before long there is weeds again. The RM43 that I used last year is :

ACTIVE INGREDIENTS: Glyphosate, isopropylamine salt* ......43.68% Imazapyr, isopropylamine salt**.............................0.78%
OTHER INGREDIENTS: .....55.54%
TOTAL: ...................100.00%

And yes...the ones that commented about Gly and imazapyr moving, I can attest to that. That is why I was hoping to find some other options. That esplanade EZ sounded good until I saw the price and the application rates. 8 to 16 oz for 1000 sq feet. Wow! and its $182 for 2.5 gallons. At the rates of application they are recommending, that's an expensive product per oz.
 
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#9 ·
rbljack said:
first off, I do have appl license...so that's out of the way. I'm looking for your preferred chemical for Pre/post emergent control of weeds in the cracks and crevices of sidewalks, driveways, etc. I have a few commercial properties which are banks and they have concrete lots with expansion gaps throughout the lot. LOTS of linear feet of them with weeds already coming up.

I used RM43 weed killer last year, and it did ok, but I really don't think it did much as a Pre emergent. It killed what was there, but weak on Pre-em control moving forward. It makes sense though, because the level of Imazapyr is so low.

What would yall suggest for a preferred chemical to kill weeds, and keep them from coming back in these areas. I'm looking for a chemical designed to be used in these areas according to the label so I don't run into any issues. I'm sure there are lots of solutions to the problem, but I want to ensure I'm following the labels in case of an audit/inspection stop. They do happen from time to time in our area.

Thanks!
Click to expand...
Look up casaron and arsenal

Arsenal is pricey but it's purpose is exactly what you're using it for
Works great to keep asphalt from buckling due to root growth
Is very persistent and very powerful

But those are the two off the top of my head.
 
#10 ·
If Casoron were applied under all pavement or concrete according to the manufacturer's instructions, there would not be as many posts asking about weeds in the cracks. This is the only long term herbicide I know of that is not destructive to surrounding plantings. Arsenal(Imazapyr), is.
 
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#11 ·
rbljack said:
yeah I thought about a torch, but our area gets very dry. In fact, we are in a fire danger right now due to drought, so I was hesitant to pull out the propane torch. And with the torch, I don't get a pre emergent long term solution. Wind blows the seeds right back in the cracks, and before long there is weeds again. The RM43 that I used last year is :

ACTIVE INGREDIENTS: Glyphosate, isopropylamine salt* ......43.68% Imazapyr, isopropylamine salt**.............................0.78%
OTHER INGREDIENTS: .....55.54%
TOTAL: ...................100.00%

And yes...the ones that commented about Gly and imazapyr moving, I can attest to that. That is why I was hoping to find some other options. That esplanade EZ sounded good until I saw the price and the application rates. 8 to 16 oz for 1000 sq feet. Wow! and its $182 for 2.5 gallons. At the rates of application they are recommending, that's an expensive product per oz.
Click to expand...
The Esplanade EZ and Specticle Total products are intended for spot treatment application by people that are not necessarily experienced applicators. An 18 oz bottle of Specticle Flo is more than enough to cover an entire acre. If you are never going to apply this in residential or landscaped areas, just strictly industrial sites, Esplanade SC. That and 21/2 gallons of your choice of Glyphosate is equivalent to a lot of Esplanade EZ. It also omits something I never like to see added to Glyphosate. Diquat. Diquat is a fast acting defoliant. Works in a couple of hours on a hot day. However, it will damage leaves way before they can absorb and then circulate the Glyphosate you applied with it. I have had failures using QuickPro. Do not expect anything different from Esplanade EZ. The one weakness of Glyphosate is its poor activity on vines, brush, and various broadleaf weeds. For that, my idea of a total kill product is Triclopyr + Glyphosate.

If I am ever spraying cracks and crevices rather than torching them, I prefer a solid cone ceramic disc-core nozzle operated at 40 PSI and 0.1 GPM. Your average plastic adjustable nozzle as is sold on most sprayers puts out 0.5 GPM if not more when adjusted to a narrow cone. I also do not spot spray weeds in seams or cracks. Everything gets sprayed. Last thing I want is to come back next time to weeds in an area I did not spray the last time. I rather get it done once and not have to deal with it for the near future.
 
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#12 ·
I also ran a gallery, pendemethlin, gly combo in some cracks/landscape beds on a remote duplex neighborhoods. Control was ok but still needed repeat apps throughout the year.

Maybe volume to get to soil through mulch or pine needles? That was my thought after a few apps of sureguard at low volume?

Any mix that has worked would be worth it to me. I’ve had to spray some areas 2-3 and sometimes 4 times a year. So spending extra money/time early for good season control would be fine with me
 
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#13 ·
New guy question. Where exactly do you go to buy chemicals like this?
 
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Discussion starter · #16 ·
thanks for the help so far guys...im researching each of these chemicals as you name them, and comparing.
 
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