[MAIPC] herbicide travel distance in Japanese honeysuckle runners??

[Mark Frey]

William

It really depends heavily on the herbicide used. Some herbicides travel in
roots and some don't. Some herbicides travel far in soils and some don't. I
don't know of research applicable to runners in particular but there are
certainly many research projects on efficacy of herbicide X on species Y.

I just did a quick search in Google Scholar and found a few old resources
for this species in particular:
Regehr, D. L., & Frey, D. R. (1988). Selective control of Japanese
honeysuckle (Lonicera japonica). Weed Technology, 139-143.
Evans, J. E. (1984). Japanese honeysuckle (Lonicera japonica): a literature
review of management practices. *Natural Areas Journal*, 4-10.
Nuzzo, V. (1997). Element stewardship abstract for Lonicera japonica. *Nature
Conservancy, Arlington, VA*.
<https://www.invasive.org/gist/esadocs/documnts/lonijap.pdf>

The Element Stewardship Abstracts are usually very useful for management.
These documents were being produced back when TNC had a robust invasive
species program and I have found them to be very useful for decades.
Obviously, new research is not captured in these documents and some of the
chemicals outlined in them and not ones many natural area managers would
like to use if they could be avoided. But, they are a good place to start.

Mark

On Mon, Apr 12, 2021 at 10:00 PM Hamersky Business <william at skyhammer.com>
wrote:

> Hi All,
> New to the MAIPC list mail, but have been reducing invasives on my
> property for the 6 years I’ve lived in Virginia, and also belong to Blue
> Ridge PRISM.
>
> I’ve been foliar spraying young J honeysuckle sprouts on the farm for a
> few days now and was wondering if anyone has info or knows of research on
> “just how far” the herbicide can travel along the runners before it is no
> longer effective? I’m guessing you all know that you can pull up one young
> sprout and have 3, 4, 5, or more runners attached to it, many with other
> “sproutlets” attached that will eventually root and create independent
> plants.  Incidentally, when I did occasionally pull up a sprout attached
> with runners, often their small “siblings" were invisible under the leaf
> litter.
>
> So my question is: is there any research out there showing the efficacy of
> herbicide treatment on invasive runners? Is it worthwhile to herbicide
> treat these groups of plants, or just keep pulling and pulling (exposing
> lots of bare soil in the meantime and who knows how many other
> weed/invasive seeds!) and see how far I can go… hopefully not to the next
> county.
>
> Thanks so much for any help/input/direction!
>
> William Hamersky
> Skyhammer
> 470 Taylors Gap Rd
> Charlottesville, VA  22903
>
> cel:  415. 516. 2560
>
> william at skyhammer.com
>
> “The Ash, having fibres tenacious and strong,
> Teaches me firm resistance, to battle with wrong."
>       Helen O. Hoyt
>
>
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