[MAIPC] Basal oil on ailanthus as stump treatment
Jeffrey Branham
jbranham at prescott.edu
Wed Aug 9 11:57:23 PDT 2023
What do folks think about winter basal oil treatments?
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On Tue, Aug 8, 2023 at 10:58 AM Conner McBane <cmcbane at appalachiantrail.org>
wrote:
> Hey Damien,
>
> We use Garlon 4 and basal oil on ailanthus a lot in Southwest and Central
> Virginia with great results. I have used both glyphosate and triclopyr on
> ailanthus and I've found anecdotally that triclopyr always works best for
> this species.
>
> We use 20% triclopyr and 80% basal oil mix and we have leaned towards hack
> and squirt and basal bark. I have had good success with basal bark on
> ailanthus, but you use more chemical and some non-target treatment will
> happen depending on proximity. With that said, we use the same mix for
> autumn olive and bush honeysuckle as a basal bark for anything too large to
> foliar and it works really well for that application too. Basal bark
> treatment should wait at least 30 days before cutting. I do not recommend
> cut-stump treatment for ailanthus because you don't have enough
> translocation to the entire root system and a lot of suckers are likely. If
> you HAVE to do a cut-stump treatment and they are large DBH I would treat
> the cut surface and buttress roots/stem. You will probably have some
> resprouts, but you can try to foliar those as they come up.
>
> Once you treat standing ailanthus, the stems are likely to drop within 2
> years' time so just be aware of that additional hazard if you go that route
> in the future. You can also buy some PathFinder II which is basal
> oil/triclopyr RTU herbicide at 20% and it saves the hassle of mixing, but
> it is a little bit more expensive.
>
> Let me know if you have any other questions and I'm happy to help! I also
> have a contractor who can help out up there, they are located in
> Charlottesville, but willing to travel.
>
> Cheers,
>
> Conner McBane
> Natural Resource Manager
> Appalachian Trail Conservancy
> 416 Campbell Ave | Suite 101
> Roanoke, VA 24016
> Phone: 540-427-7098
> Cell: 540-525-6812
> Fax: 540-904-4368
> cmcbane at appalachiantrail.org <eprice at appalachiantrail.org>
> www.appalachiantrail.org
> ------------------------------
> *From:* MAIPC <maipc-bounces at lists.maipc.org> on behalf of Ossi, Damien
> (DOEE) <damien.ossi at dc.gov>
> *Sent:* Monday, August 7, 2023 10:48 AM
> *To:* 'MAIPC Listserve' <maipc at lists.maipc.org>
> *Subject:* [MAIPC] Basal oil on ailanthus as stump treatment
>
> CAUTION: This email originated from outside of the organization. Do not
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>
> Hi MAIPC members,
>
>
>
> Does anyone use oil-based triclopyr rather than water-based on ailanthus
> as a stump-cut treatment? We’re looking to remove a large number of
> ailanthus in DC before the spotted lanternflies arrive in force, and the
> vendor is proposing to do a stump-cut treatment with triclopyr. I want to
> recommend that they use Garlon-4 or equivalent rather than Garlon-3a or
> equivalent, because the herbicide can be applied to both the sapwood on the
> stump and the bark on base of the stump. But I also saw a study from Italy
> that indicated that glyphosate is better for stump-cut treatment of
> ailanthus.
>
>
>
> The trees must be removed at the time of treatment, so using
> hack-and-squirt or typical basal bark treatments won’t fly. Any advice
> from the membership?
>
>
>
> Thanks,
>
> Damien
>
>
>
>
>
> *Damien P. Ossi*
>
> Wildlife Biologist
>
> Fisheries & Wildlife Division
>
> Department of Energy & Environment
>
> Government of the District of Columbia
>
> 1200 First Street NE, 5th Floor
>
> Washington, DC 20002
>
> (202) 741-0840
>
> damien.ossi at dc.gov
>
>
>
>
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>
--
Cheers,
JB
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