Locust trees sprayed with 2,4d question

clemsonfor · Nov 10, 2010

MarkV said:
Great post Wooddust, welcome to the forum. Information, especially with brush control is so regional, do you mind sharing what part of the country your expertise is in?

We are about to have 68 acres of timber cut and are looking at brush control methods for the next few of years. Mostly pine in our area with a lot of what we call "privet" growing after a cut. It is an invasive species here. Any suggestions?

MarkV

Arsonal will kill everything but the pine if that is your concern, but priviet is really hard as noted i even talked to a BASF rep and he was saying that they were trying things to kill it but nothing successful yet. Id agree with something basal with deisel in it.

Pilot · Nov 13, 2010

Here is what Wisconsin DNR says on their website:

Chemical Control: The extensive root system of black locust spreads herbicides over large areas. Basal stem application is preferred for treatment because it is selective and easy to apply. The herbicide should be applied in a band at least 6 inches high all around the trunk approximately 12 inches from the ground. Triclopyr formulated for dilution in diesel fuel or mineral oil is currently the herbicide of choice for black locust. Both diesel fuel and mineral oil release volatile organic compounds into the immediate area. Although more expensive, mineral oil is potentially less toxic to neighboring organisms. The triclopyr/oil mixture may also be applied to a girdle cut at standing height or to cut stumps.

For small isolated plants or thick patches under 5 feet in height (such as those resulting from cutting or fire), fisamine ammonium can be applied as a foliar spray. Fisamine ammonium kills plants by inhibiting leaf bud growth and flower formation in the spring. Fisamine ammonium should be applied at the end of the growing season. In order to effectively curb regeneration, every branch or stem must be sprayed because missed stems will leaf out. Triclopyr mixed with water may also be used effectively as a foliar spray in the latter half of the growing season.

Glyphosate can be applied to foliage of actively growing trees using a hand sprayer (1-1.5% active ingredient solution). However, foliar glyphosate spray should not be applied in high quality natural areas because it is a nonselective herbicide. Black locust stems can be cut at the base with brush-cutters, chainsaws, or hand tools; stumps should be treated immediately with a 20% active ingredient solution of glyphosate. The treatment works best when applied in late summer, early fall, or during the dormant season.

Diesel breaks down quickly in the soil, so it's actually pretty environmentally friendly since you would not be using very much.

Ken45101 · Nov 14, 2010

And here I am, wishing we had more black locust! It makes excellent fence posts and is one of the best firewood species. It's honey locust that I hate.

Wouldn't brush hogging a couple of times a year eventually kill these pest species?

Ken

archibald tuttle · Sep 18, 2011

rkpatt said:
Generic herbicide similar to Crossbow -

Crossroad Brush Killer (1 Gallon) - Generic Replacement for Crossbow America's Farm & Home Store

bumping this thread up again because it seems the closest to my question and there is a lot of good information already. Noone has discussed the effectiveness of Crossbow or Crossroad style combination as against 2,4 D itself.

I am spraying in southern New England and mostly need to kill Poison Ivy and Japanese Knotweed (much more of the former, fortunately).

I can more easily selectively target the Knotweed and it is only in one compact area, so I can move over to something like Roundup / glyphosate but of course it is easier if I can pretty much keep a single mix in the sprayer. We use [relatively] spot foliar application with a tow behind electric sprayer and 25 gallon tank.

I used to use Ammate X for my general spray, but don't know what rabbit hole that went down. Crossbow has proven effective, but obviously it is about twice the price of 2,4 D alone.

If there is a competitive supplier anyone can recommend for 2,4 D and Triclopyr, we can mix ourselves. Depending on shelf life I could go for 2.5 gallons of each in concentrate.

Earlier in the thread it was indicated this would be a money saving move. But I am also wondering about the effectiveness of one or the other alone for my applications.

Thanks,

Brian

thatguy · Sep 18, 2011

Ortho makes a brush-b-gone (blackberry/poison oak killer) that contains Triclopyr, I mixed it with 2,4d to make my own 'crossbow' last year BUT it did not stick to the plant leaves very well - so I think it needed more surfactant. I did not try the Brush-b-gone by itself yet

Amazon.com: Ortho Brush-B-Gon Poison Ivy Oak & Brush Killer - Quart 0432760: Patio, Lawn & Garden

From my limited experiences - crossbow does a much better job than any 2,4d that I have tried.. At least on the weeds I have used it on..

brian

archibald tuttle said:
bumping this thread up again because it seems the closest to my question and there is a lot of good information already. Noone has discussed the effectiveness of Crossbow or Crossroad style combination as against 2,4 D itself.

I am spraying in southern New England and mostly need to kill Poison Ivy and Japanese Knotweed (much more of the former, fortunately).

I can more easily selectively target the Knotweed and it is only in one compact area, so I can move over to something like Roundup / glyphosate but of course it is easier if I can pretty much keep a single mix in the sprayer. We use [relatively] spot foliar application with a tow behind electric sprayer and 25 gallon tank.

I used to use Ammate X for my general spray, but don't know what rabbit hole that went down. Crossbow has proven effective, but obviously it is about twice the price of 2,4 D alone.

If there is a competitive supplier anyone can recommend for 2,4 D and Triclopyr, we can mix ourselves. Depending on shelf life I could go for 2.5 gallons of each in concentrate.

Earlier in the thread it was indicated this would be a money saving move. But I am also wondering about the effectiveness of one or the other alone for my applications.

Thanks,

Brian