Buying Glyphosate

[Diesel5610]

I buy 2.5 gallon jugs of the cheapest 41% concentrate generic brand just like most everyone else. I also have had issues with glyphosate after having it freeze in the garage over winter. Not sure what the issue was but I haven't let it freeze after that.

 

[bueller]

My gly freezes every year also and still works just fine and it takes me several years to go through a 2.5 gallon jug. I suspect some other factor is to blame for those that had an issue with effectiveness.

 

[yoderjac]

Chart of storage temps.

www.wyomingextension.org/agpubs/pubs/MP93-5.pdf

Thanks for posting that. That might be the very list I was looking at.

Thanks,

Jack

 

[nitro27]

I read on another web page that some manufacturers of Gly. products say it's ok to freeze but must be warmed to at least 68 degrees for several days and agitated for a bit to dissolve crystals that form.

 

[Islandguy]

I am from Ohio. I have a house in Ontario. I guess I will buy it here and take it up with me. Thanks for the heads up.

No Problem.

 

[NT179]

Watch out at Canadian customs,they can and probably take it from you.

 

[Telemark]

Why would they take it from me?

 

[Tree Spud]

Personally, if you are not a farmer, I don't see any value or how you would calibrae a 15-25 gal sprayer on the back of your ATV?

I have used 2.5 oz of Gly per gal of water for years and have always had a good application & kill. That assumes plants are in early growth 6"-12". For more mature you may need to increase gly rate.

With my 25 gal sprayer I can cover at least an acre. With a 2.5:1 ratio that is 1.95 oz of gly.

You can buy 41% generic Gly from most Farm/Ag stores. I use the 2.5 gal size as it is easy to handle. I save my old jugs and will fill with water to take out with me on a spraying trip. Allows me to mix another tank to extend the area I am spraying.

 

[Tree Spud]

Why would they take it from me?

A chemical herbicide which may require a license for use or import. Depending on how much you bring in, and if the amount is enough for "commercial" us, there may be taxes, import duties, or GST. Breaking the law is not really the issue, they want you to spend your US $$ in Canada ... last think you want is to be flagged in the customers system, could make every trip in a frustrating experience

 

[NT179]

You can buy the watered down versions of Roundup at farm stores,Canadian Tire ,etc but you have to have a Ontario sprayers license to buy the hard core stuff. And as tree spud said,you dont want to get caught trying to purposely smuggle something in.They will tear your car apart your next few visits. If you have it in with your other stuff,they may just take it.

 

[SwampCat]

I have found the best way to determine gly mix rate in the tank is to fill your tank with water and go spray a half acre or acre and see how much water your sprayer used. I shoot for 2 qts per acre of 41% gly. Most of my spraying is done with a 55 gal sprayer on a 28 hp John Deere 790. I normally cover two acres with that 55 gal. So I add one gal of gly. But, if I am spraying with my 65 hp Jd 5065, because the ride is so much smoother, I often get closer to three acres per 55 gallons and adjust the mixture accordingly. I have a 16 gallon sprayer on my Ranger and it usually takes two tanks per acre. I go slower in grown up pasture than I do planted plots. All the time have folks ask me what rate do I mix my gly. It all depends on the rate of application of your spray equipment. Adjust accordingly

 

[Telemark]

I never lie to customs, and i never smuggle. But i habe never been asked about herbicide.

 

[Smallplot]

Personally, if you are not a farmer, I don't see any value or how you would calibrae a 15-25 gal sprayer on the back of your ATV?

I have used 2.5 oz of Gly per gal of water for years and have always had a good application & kill. That assumes plants are in early growth 6"-12". For more mature you may need to increase gly rate.

With my 25 gal sprayer I can cover at least an acre.

You have calibrated even if you do not realize it. You say you can cover one acre with 25 gal of mix. That is what calibration is. To reach this you have to travel at about the same speed each time and that is what calibration is, speed and distance to reach a goal. You know how much to cover an acre, half acre, or even a quarter acre. The only difference is your still having to figure how much chemical to add based on how much water besides just being able to dump in the amount of chemical you want to cover the area because you already know how much water is necessary. Hope this makes sense.


If your spraying once a year this is fine but if your making multiple applications a year you are going to reach the max application rate rather quickly and may not be able to make additional applications. We still have to be good stewards and make every attempt at keeping rates within allowable tolerances.



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[Tree Spud]

You have calibrated even if you do not realize it. You say you can cover one acre with 25 gal of mix. That is what calibration is. To reach this you have to travel at about the same speed each time and that is what calibration is, speed and distance to reach a goal. You know how much to cover an acre, half acre, or even a quarter acre. The only difference is your still having to figure how much chemical to add based on how much water besides just being able to dump in the amount of chemical you want to cover the area because you already know how much water is necessary. Hope this makes sense.

Now having said that, let’s look at your 2.5 oz per gallon mix rate. Each time you have to figure out how much chemical you will need to add based on how much water you use. Going by your numbers you are applying 62.5 oz of GLY on 1 acre. This is a hot dose which is close to 4 qt per acre rate (64 oz).

If your spraying once a year this is fine but if your making multiple applications a year you are going to reach the max application rate rather quickly and may not be able to make additional applications. We still have to be good stewards and make every attempt at keeping rates within allowable tolerances.



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If I recall, 32 oz per quart. Therefore 2.5 oz/gal = 62.5 oz or 1.95 quarts per 25 gal or 1.95 quarts per acre.

Not clear how you get to 4 quarts per acre?

 

[Smallplot]

You have calibrated even if you do not realize it. You say you can cover one acre with 25 gal of mix. That is what calibration is. To reach this you have to travel at about the same speed each time and that is what calibration is, speed and distance to reach a goal. You know how much to cover an acre, half acre, or even a quarter acre. The only difference is your still having to figure how much chemical to add based on how much water besides just being able to dump in the amount of chemical you want to cover the area because you already know how much water is necessary. Hope this makes sense.

Now having said that, let’s look at your 2.5 oz per gallon mix rate. Each time you have to figure out how much chemical you will need to add based on how much water you use. Going by your numbers you are applying 62.5 oz of GLY on 1 acre. This is a hot dose which is close to 4 qt per acre rate (64 oz).

If your spraying once a year this is fine but if your making multiple applications a year you are going to reach the max application rate rather quickly and may not be able to make additional applications. We still have to be good stewards and make every attempt at keeping rates within allowable tolerances.



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If I recall, 32 oz per quart. Therefore 2.5 oz/gal = 62.5 oz or 1.95 quarts per 25 gal or 1.95 quarts per acre.

Not clear how you get to 4 quarts per acre?

You are correct. Don’t know where my head was! Thanks for catching my mistake!


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[FarmerDan]

Thanks for posting that. That might be the very list I was looking at.

Thanks,

Jack

It's probably good information, but it has a 1998 publication date. Formulations change.

Here's another
http://www.agphd.com/resources/herbicide-storage-application-and-rainfast-times/

 

[yoderjac]

It's probably good information, but it has a 1998 publication date. Formulations change.

Here's another
http://www.agphd.com/resources/herbicide-storage-application-and-rainfast-times/

Good Point! Thanks.

 

[Smallplot]

It's probably good information, but it has a 1998 publication date. Formulations change.

Here's another
http://www.agphd.com/resources/herbicide-storage-application-and-rainfast-times/

Good Point! Thanks.

AgPHD also has some useful apps. Really like the fertilizer removal tool and soil deficiencies tool.


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[WTNUT]

When the generic goes to about $31 for 2.5 Gallons at Tractor Supply or Rural King you are not likely to beat that price. It is less than what you can get a 30 gallon container for based on price per Gallon


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[Telemark]

When the generic goes to about $31 for 2.5 Gallons at Tractor Supply or Rural King you are not likely to beat that price. It is less than what you can get a 30 gallon container for based on price per Gallon


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Cool. I will pick some up when i get back to the US.

 

[Tap]

Another important aspect of mixing gly is the water you use.
There was an excellent thread on that old forum (I believe) by brushpile, who happens to be one of the most knowledgeable contributors when it comes to this stuff.
I believe the title of that thread was "Why Your Glyphosate May Not Be Working" and it addressed mineral content in certain waters and how the minerals in that water bind with the gly molecules and basically prevent them from doing their job.
The remedy is to add AMS to the water BEFORE adding the glyphosate. In some cases, the AMS should be added hours (or even days?) before the gly in order to allow the AMS time to work.
AMS is relatively inexpensive and when you consider the time, effort, and expense we take to grow food plots, I see no reason why we wouldn't add AMS to our mix.
One of the reasons we are developing gly-resistant weeds is because we don't always get a good kill and the surviving weeds go on to become more gly resistant. Don't take shortcuts when using herbicides.