How long does Crossbow or Roundup last?

[woodlandfarms]

Anyone know how long Crossbow or Roundup will last? I have some in my garage, unused at this point.

 

[Bird]

I can't say how long, but I do know I've mixed the Round-Up concentrate with water and kept it over a year and it still worked just as good as the day it fresh.

 

[Charlton John]

I know roundup if sealed nice and tight will still be good in the spring/next season. I have saved quite a bit of leftovers a few different times and had the same good results come next spings usage.

 

[teg]

Are you talking the concentrate or the pre-mix?

I called the number on the RoundUp concentrate label (Product Information or Assistance) and asked them... the reply was "5 to 7 years" (and my guess is that it will work longer then that but not as well).

 

[kthompson]

TEG,

Noticed your comment on your pto. Did they tell you it was designed that way? Your tractor uses a manual shift lever for the pto, correct? I have a B model and jammed the pto shaft and it created about the same issue for the front pto but was able to get it disconnected, and since I do not use it was not an issue. kt

 

[nmu98]

They both will last a really long time. Longer if they are kept from changes in tempurature. Round up can freeze, but its not good for it to freeze and thaw multiple times.

If it is kept for a longer period of time, try to keep the temps stable.

 

[teg]

TEG,

Noticed your comment on your pto. Did they tell you it was designed that way? Your tractor uses a manual shift lever for the pto, correct? I have a B model and jammed the pto shaft and it created about the same issue for the front pto but was able to get it disconnected, and since I do not use it was not an issue. kt

This is off topic from the RoundUp question, you can PM or email for more details... Actually, I'll add the reason to my signature.

...but as for your question, for the L2800-hst, the pto is turned on and off by a cable. Best guess is that it's not good to leave the tractor outside in the weather. Last thing I heard is that you have to oil the cable (which I did but I guess not enough).

 

[Bird]

This thread reminded me of a little job I've been intending to do. I have a 24 oz. squirt bottle that came with the pre-mix, ready-to-use, or whatever you call it and I refill it periodically. So today I used up what I mixed early this Spring from the quart of concentrated Round-Up I've had a couple of years. Then I mixed another batch in the 24 oz. bottle. We'll see what happens, but I expect it to do the job just fine. I used a tiny bit shy of 1.5 oz. of the concentrate in the 24 oz bottle.

 

[ToadHill]

I've mixed concentrate that has been on the shelf for over 4 years and it still worked very well.

 

[teg]

Bird, If you are into "testing" RoundUp... your 1.5oz in 24oz is the same as 8oz in a gallon OR about 6.25% solution. I can tell you that even a 2% solution or 0.5oz in 24oz will work for most things... and will save you money. On the last page for the original RoundUp label - 2% is the highest it recommends.

 

[Bird]

Bird, If you are into "testing" RoundUp... your 1.5oz in 24oz is the same as 8oz in a gallon OR about 6.25% solution. I can tell you that even a 2% solution or 0.5oz in 24oz will work for most things... and will save you money. On the last page for the original RoundUp label - 2% is the highest it recommends.

What I have is "Roundup Weed & Grass Killer Concentrate Plus" according to the label on the front of this quart container. The "Active Ingredients" list is (1) Glyphosate, isopropylamine salt . . .18.00%, (2) Diquat Dibromide . . . 0.73% and (3) Other Ingredients . . . 81.27%.

I think they make several different strength "concentrates" but don't really know. The label says "For Best Results . . . 6 fl. oz (12 Tbs) per gallon of water". Farther down it says "For easy to kill weeds such as seedlings add 3 fl. oz (6 Tbs) to 1 gallon of water."

So for this concentrate that I have, I figure there's 128 ounces per gallon and if you use 6 oz. for 128 oz. of water then for 24 oz. of water the ration would be 1.125 oz of concentrate. Now since that 1.125 oz. is going to displace that amount in the 24 oz. bottle, 1.07 oz. of concentrate would have been plenty, but I didn't have my calculator out there, don't use a lot of Roundup, so I don't spend much money on it, and I wanted to be sure it was strong enough.

So, I've no doubt you're right, but not sure we're looking at the same strength concentrate, and either way, yep, I mixed it a bit strong. But this quart has to be at least 2 years old and now I've used nearly half of it.

 

[teg]

oops, my bad... I was talking about the 41% concentration of RoundUp Original. Glad to see you're reading labels!!! ...and yes, the do make many, many different strengths, can't count the number of them... I should not have assumed anything.

 

[woodlandfarms]

It is the concentrate stuff. I figured I bought enough for 2 years worth of weeding (Holy cats, $250 bucks for 2.5 gallons)...

It has worked quite well on the blackberries...

 

[ToadHill]

Next time you need it, any product that contains glyphosate will work. Why pay for the Roundup advertising, I get mine at Tractor Supply for about $41 per gal.

 

[Bird]

Most of these chemicals come in different concentrations. I used to use Diazinon and I bought it by the gallon at the farmers co-op. It was both a much stronger concentration and much cheaper than what you could buy at Walmart and Home Depot.

 

[woodlandfarms]

Next time you need it, any product that contains glyphosate will work. Why pay for the Roundup advertising, I get mine at Tractor Supply for about $41 per gal.

that is the wife on the Roundup. I am the crossbow addict. Nothing has worked quite like it on my blackberry issue. Good idea on the the roundup. I assume that it hits broadleaf and leaves grasses alone?

 

[Bird]

that is the wife on the Roundup. I am the crossbow addict. Nothing has worked quite like it on my blackberry issue. Good idea on the the roundup. I assume that it hits broadleaf and leaves grasses alone?

Nope, RoundUp kills everything.

 

[WarrenF]

What I have is "Roundup Weed & Grass Killer Concentrate Plus" according to the label on the front of this quart container. The "Active Ingredients" list is (1) Glyphosate, isopropylamine salt . . .18.00%, (2) Diquat Dibromide . . . 0.73% and (3) Other Ingredients . . . 81.27%.

I think they make several different strength "concentrates" but don't really know. The label says "For Best Results . . . 6 fl. oz (12 Tbs) per gallon of water". Farther down it says "For easy to kill weeds such as seedlings add 3 fl. oz (6 Tbs) to 1 gallon of water."

So for this concentrate that I have, I figure there's 128 ounces per gallon and if you use 6 oz. for 128 oz. of water then for 24 oz. of water the ration would be 1.125 oz of concentrate. Now since that 1.125 oz. is going to displace that amount in the 24 oz. bottle, 1.07 oz. of concentrate would have been plenty, but I didn't have my calculator out there, don't use a lot of Roundup, so I don't spend much money on it, and I wanted to be sure it was strong enough.

So, I've no doubt you're right, but not sure we're looking at the same strength concentrate, and either way, yep, I mixed it a bit strong. But this quart has to be at least 2 years old and now I've used nearly half of it.

AWWWW HECK Bird....sounds like I think....if a little is good, THEN A LOT IS BETTER.....

 

[cbushrun1]

I have found that Round up isnt as effective as Crossbow on our blackberries and the DEMON....poison oak. I mix both in higher concentrates for spraying BB and PO on our 6 acres and it works well. I dont know if its the strain of BB or what, but I like to have something that will work on grasses and BBs and the PO so dont need to have mess with having multiple sprayers.

 

[ampsucker]

yes, buy generic crossbow. just paid about 99 bux for 2.5 gallons of 41% . that will keep us going for quite awhile.

as for why one product works better than other, consider it might be the wetting agents. if you want to improve the performance, add a couple tablespoons of dishwashing soap (any surfactant that is cheap will work) and that will help it absorb better into the leaves of whatever you are spraying.

fyi, the commercial wetting agents just don't foam as much as the dishwash soap, so if that's an issue in a large motorized sprayer, you might spend the extra few bucks for the actual wetting agent. if you are just using a pump up tank sprayer, fill it with water first, then add your chemicals and dish soap last to minimize foaming. a few shakes once pressurized will mix everything together.

amp