Weed & brush spraying

[kenmac]

**** that Rm43 is just generic roundup at 43% concentrate. $100 for 2.5 gallons is a rip off. I pay $49 or so for 2.5 gallons of the same concentrate. That stuff is a rip off.

rural king is cheaper than that for higher concentrate

 

[California]

What about Ivy?

At my home in town a third of the back yard was covered. I mowed it then hit the new leaves with Roundup mixed 50% stronger than label recommendation, with a tablespoon of Dawn dish detergent per gallon. I applied the third weekly application today. Tiny starts of Oak and Blackberry look sick, the Ivy looks slightly dazed but not killed. I do think few to no new leaves appeared since last week's application. This mix is effective against Oak and Wild Blackberry at the ranch but this city Ivy seems a lot tougher.

Any advice? I prefer just Roundup because I can start new lawn there soon after, but if this does nothing then I need something else.

 

[smstonypoint]

What about Ivy?

At my home in town a third of the back yard was covered. I mowed it then hit the new leaves with Roundup mixed 50% stronger than label recommendation, with a tablespoon of Dawn dish detergent per gallon. I applied the third weekly application today. Tiny starts of Oak and Blackberry look sick, the Ivy looks slightly dazed but not killed. I do think few to no new leaves appeared since last week's application. This mix is effective against Oak and Wild Blackberry at the ranch but this city Ivy seems a lot tougher.

Any advice? I prefer just Roundup because I can start new lawn there soon after, but if this does nothing then I need something else.

Boston or English? Glyphosate (41%) at 3 oz./gallon has worked for me in killing English ivy. It seems to me that mowing has reduced the leaf area and thus the ability of the ivy to absorb the glyphosate.



Steve

 

[kenmac]

As far as I know. the dish washing detergent acts as a surfactant. (helps the chemical stick to the plant) The stuff I buy already has 15% surfactant added.

I have no idea what type ivy you have,but it has killed everything I have sprayed with it. From poison ivy to wisteria vines.

As far as I know, the Active ingredient in Round up is glyphosate . You can buy it under other names than round up much cheaper

 

[California]

English Ivy. I've been mixing 41% Glyphosate at 3.5 oz./gallon. The label specs 2.5 oz/gallon so that's 40% over recommended. I don't know if there's surfactant in this genuine Roundup, hence the dish soap.

I'm going to increase the proportion of dish soap after I noticed that the spray beads-up and runs off of the very waxy ivy leaves. It's encouraging to read that you guys have knocked down ivy with just Glyphosate.

This Round-Up was free, a mostly full gallon of 41% from the county hazardous waste disposal site. I stop by every month or so and find more Round-Up and paint there than I could ever use. Anything they receive that is legal to sell goes right out on their free table. So I can afford to be generous in mixing proportions. But maybe this stuff reduces strength after a few seasons in storage?

Anyhow the difference between the wilting oak starts and the herbicide-resistant ivy, is noticeable.

Thanks for the advice!

 

[M5farms]

English Ivy. I've been mixing 41% Glyphosate at 3.5 oz./gallon. The label specs 2.5 oz/gallon so that's 40% over recommended. I don't know if there's surfactant in this genuine Roundup, hence the dish soap.

I'm going to increase the proportion of dish soap after I noticed that the spray beads-up and runs off of the very waxy ivy leaves. It's encouraging to read that you guys have knocked down ivy with just Glyphosate.

This Round-Up was free, a mostly full gallon of 41% from the county hazardous waste disposal site. I stop by every month or so and find more Round-Up and paint there than I could ever use. Anything they receive that is legal to sell goes right out on their free table. So I can afford to be generous in mixing proportions. But maybe this stuff reduces strength after a few seasons in storage?

Anyhow the difference between the wilting oak starts and the herbicide-resistant ivy, is noticeable.

Thanks for the advice!

Mix some remedy in with the GLY

 

[LD1]

**** that Rm43 is just generic roundup at 43% concentrate. $100 for 2.5 gallons is a rip off. I pay $49 or so for 2.5 gallons of the same concentrate. That stuff is a rip off.

Not exactly.

RM43 has the addition of imazapyr.

Glyphosate (roundup) is non-residual. Meaning it has NO prevention characteristics.

Imazapyr is a residual. Meaning it prevents new growth. (length of time it remains viable as a residual depends on far too many conditions to say for sure).

Mixing it at 6oz per gallon....(or a gallon only covering ~1/3 acre) is also a REAL hot dose of the glyphosate. 41% glyphosate is normally reccomended at 4-6 pints per acre. which would make a gallon do 1.5-2 acres. (60000 sq ft - 80000 sq ft) as opposed to the RM43 only doing 17000 sq ft per gallon. But I suppose they have you mix it that hot for the low concentration of imazapyr they put in.

Like I said earlier, there are ALOT of different mixtures of different base products, and at different concentrations. Lots of ways to get the job done. And to say one works better than another is like arguing weather dawn or cascade dish soap works better for doing dishes.

 

[Oldoak]

Not exactly.

RM43 has the addition of imazapyr.

Glyphosate (roundup) is non-residual. Meaning it has NO prevention characteristics.

Imazapyr is a residual. Meaning it prevents new growth. (length of time it remains viable as a residual depends on far too many conditions to say for sure).

Mixing it at 6oz per gallon....(or a gallon only covering ~1/3 acre) is also a REAL hot dose of the glyphosate. 41% glyphosate is normally reccomended at 4-6 pints per acre. which would make a gallon do 1.5-2 acres. (60000 sq ft - 80000 sq ft) as opposed to the RM43 only doing 17000 sq ft per gallon. But I suppose they have you mix it that hot for the low concentration of imazapyr they put in.

Like I said earlier, there are ALOT of different mixtures of different base products, and at different concentrations. Lots of ways to get the job done. And to say one works better than another is like arguing weather dawn or cascade dish soap works better for doing dishes.

:thumbsup:

Yep, I looked it up a while back when this thread first started but didn't bother to comment about the difference. People should learn to investigate the details and facts particularly when it comes to chemical compounds they may want to use or not want to use.

 

[kenmac]

I'm going to increase the proportion of dish soap after I noticed that the spray beads-up and runs off of the very waxy ivy leaves. It's encouraging to read that you guys have knocked down ivy with just Glyphosate.

Yes, I would say if the chemical is beading up and running off the oily/ waxy leaves, you need to add more dish soap to make it stick.

Funny you find roundup at the hazardous disposal site.. One man's trash is another man's treasure !

 

[smstonypoint]

Funny you find roundup at the hazardous disposal site.. One man's trash is another man's treasure !

Could the Roundup have been diluted before its disposal?

Steve