TNC Invasive Species Listserve Digest #123


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Global Invasive Species Team listserve digest #123
Thu Feb 12 2004 - 14:26:44 PST

--CONTENTS--
1. Knotweed, Russian olive, Japanese stilt grass (Maryland, USA)
2. Elaeagnus angustifolia (California, USA)
3. Volunteers and herbicides (Ohio, USA)
4. Controlling Conyza canadensis (California, USA)
5. Russian olive and Polygonum control (Wyoming, USA)
6. Better than Janet Jackson (Nationwide, USA)
7. Vinegar on Phragmites (Massachusetts, USA)
8. News from the Award-Winning WIST (Global, planet Earth)
9. A new beetle invader (Eastern states, USA)
10. PMIS v5.3 available (Nationwide, USA)
11. Last chance to comment on "RoundUp Ready" bentgrass (Wisconsin, USA)
12. Glyphosate use in watershed lands (Connecticut, USA)
13. Weed job now open! (Florida, USA)

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1. Knotweed, Russian olive, Japanese stilt grass (Maryland, USA)
From: Marc Imlay (ialm(at)erols.com)

For the knotweed (Polygonum sachalinense) and Russian olive (Elaeagnus
angustifolia) queries in the last listserve digest, hack and squirt may
work better than cut stump since the herbicide can translocate longer. It
is best to treat late in the growing season when the systemic flow is
downwards.

For Japanese stiltgrass (Microstegium vimineum, also mentioned in the
listserve), where the infestations were apparently being carried by
hikers...for this reason, we treated the trail populations in one of our
parks before we did the rest of the park.

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2. Elaeagnus angustifolia (California, USA)
From: Mike Kelly (mkellysd(at)aol.com)

Regarding the query on control methods for Russian olive (Elaeagnus
angustifolia), in digest #122:

First, I would use Garlon 4A (25% Garlon to 75% water or basal type oil;
premixed as Pathfinder). Cut the tree, then apply this mix within 1 minute
(studies have been done on several species -- not this one -- that showed
timing mattered. You must get the herbicide in there before the protein
molecules plug the vascular transport system).

Second, when it resprouts -- as many shrubs and trees do after a cut-stump
treatment -- spraying it with 2% RoundUp Pro treatment usually kills the
resprouts. This works on Eucalyptus, Tamarix, Olive, etc.

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3. Volunteers and herbicides (Ohio, USA)
From: Jennifer Hillmer (jhillmer(at)holdenarb.org)

I am looking for the names of programs that allow (that is, officially
sanction) volunteers to apply herbicides in conservation areas. I am
starting a program for volunteer land stewards on the extensive natural
areas of The Holden Arboretum in Kirtland, Ohio. I don't need the details
of your program, only that you officially have volunteers who are
authorized to apply herbicides.

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4. Controlling Conyza canadensis (California, USA)
From: Peter Warner (pwarner(at)mcn.org)

Regarding the discussion of Conyza canadensis (digest 121, part 5, and
digest 122, part 2).

While I am not a taxonomic expert, we should note that Conyza canadensis
is a native species, according to Hickman et al. (The Jepson Manual,
1993). I realize attempts to distinguish this taxon from the several
non-natives can lead to early onset dementia (spoken like a victim), but
recognition of the role of native species in early vegetational succession
is important. If we eradicate the native taxa from our weed patches, we
will be left with more of the non-natives. Since disturbance happens, we
should welcome that some of the attendant flora are native, and plan for
their success, and succession.

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5. Russian olive and Polygonum control (Wyoming, USA)
From: Jennifer Vollmer (vollmej(at)basf-corp.com)

Roundup does not translate well in the root system. That is not to say
there is no translocation, but when trying to kill deep rooted perennials
and brush species, numerous applications of roundup are needed, sometimes
over several years.

A more cost effective control measure for deep rooted perennials is to use
a herbicide that does translocate throughout the root system of a deep
rooted perennial or tree/brush species. HABITAT and ARSENAL herbicide
(imazapyr) translocates to all growing points in the shoots and roots.
Typically a 1% solution plus surfactant in water, applied low volume
(spray to wet, not to drip), with good coverage of the target species,
will control deep rooted perennials and many brush species including
Russian olive (Elaeagnus angustifolia) and Polygonum species.

In general, Polygonum species are very sensitive to herbicides in the
imidazolinone family. This includes imazapic (STALKER for basal and cut
stump treatments, ARSENAL for terrestrial brush control and HABITAT for
aquatic weed control) and imazapyr (PLATEAU and JOURNEY [imazapic +
glyphosate]). If the weed is not listed on the label, call a BASF rep for
a recommendation, research is always ahead of weeds listed on the label.

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6. Better than Janet Jackson (Nationwide, USA)
From: Barry Rice (bamrice(at)ucdavis.edu)

Now that the Superbowl halftime show is over, CBS is moving onto yet other
exciting productions. On Saturday, March 1st at 3:30pm (EST), they
promise to air a 30 minute show called SILENT INVADERS: "Plants out of
Place II," on the series TECHNO 2100.

The press release says, "This program features interviews with a variety
of respected plant experts, landowners, and federal agencies working
together to manage, control and prevent the spread of invasive plants
(both terrestrial and aquatic) through successful and effective
biological, mechanical and chemical initiatives....It will help raise
public awareness of the ecological and economical impact invasive plants
are having on our country and will reflect the need for ongoing scientific
research and cooperation between agencies and related industries."

Editor's note: see arch124.html for correction regarding this post.
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7. Vinegar on Phragmites (Massachusetts, USA)
From: Karen Lombard (klombard(at)tnc.org)

A colleague of mine is involved in the Charles River Conservancy. One of
their staff is proposing to use vinegar in the cut and drip method of
removing Phragmites. Has anyone heard anything about this method?

Editor note: A good review of vinegar as an herbicide can be read here:

Editor's note: see arch124.html for omitted links.
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8. News from the Award-Winning WIST (Global, planet Earth)
From: Barry Rice (bamrice(at)ucdavis.edu)

"Award winning", you ask? Oh yes! Look at the top of page 4 of this pdf:
http://www.oda.state.or.us/plant/Inv_spp/InvSppRepCard2003.pdf
to see that our very own Dr. Mandy Tu has been given the "Outstanding
Defender Award" for "making the most outstanding contribution to
protecting Oregon from invasive species." Read the pdf for more details.

The award-winning Mandy has also been writing busily, too. See the new
documents described on the WIST web site front page
(http://tncweeds.ucdavis.edu), including a "Success Story" in Oregon, a
new Species Management Summary ("ESA") on Iris pseudacorus, and a revised
review of the herbicide Imazapic

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9. A new beetle invader (Eastern states, USA)
From: Barry Rice (bamrice(at)ucdavis.edu)

In case you haven't heard, a new beetle from India has been found
infesting holiday packages of pine cones at a number of chain stores
(stores involved in the recall include Target, K-mart, Safeway, etc.) The
insect, called Chlorophorus strobilicola (or slender banded pinecone
longhorned beetle, for short), has not to my knowledge escaped into wild
settings.

For photos:
http://www.ppdl.purdue.edu/ppdl/hot03/12-15.html
http://www.mdinvasivesp.org/Chlorophorus_strobilicola.html
http://www.cdfa.ca.gov/phpps/ppd/Entomology/Coleoptera/Pineconelonghorn.htm

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10. PMIS v5.3 available (Nationwide, USA)
From: John Hall (john_hall(at)tnc.org)

A news release, if you haven't heard yet...

A new version (5.3) of the US. Army Corps of Engineers CD entitled the
"Noxious and Nuisance Plant Management Information System - PMIS" has just
been released. This new version has added information on several plant
species, enhanced graphics, better compatibility with Windows XP, and more
thorough expert review. Copies can be requested by e-mailing Michael
Grodowitz (grodowm(at)wes.army.mil) or on-line
(http://www.wes.army.mil/el/pmis/pmishelp.htm). There are no charges
associated with the CD.

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11. Last chance to comment on "RoundUp Ready" bentgrass (Wisconsin, USA)
From: Marilyn Jordan (mjordan(at)tnc.org)

Monsanto and Scotts have petitioned USDA APHIS seeking nonregulated status
(i.e. permission for commercial release) for creeping bentgrass (Agrostis
stolonifera L.) which has been genetically engineered for tolerance to
the herbicides glyphosate (Roundup, Rodeo) and glufosinate-ammonium. The
deadline for public comment is March 5. It is possible for the herbicide
resistance trait to be transferred to naturalized Agrostis or Polypogon
species. If these grass species are weedy in your area, and/or you might
use these herbicides for control, please respond. TNC staff should send
their information to me by February 29. Other agency staff should respond
directly to USDA APHIS before March 5 at

http://www.aphis.usda.gov/ppd/rad/webrepor.html\

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12. Glyphosate use in watershed lands (Connecticut, USA)
From: Mark Carabetta (mcarabetta(at)tnc.org)

We have barberry (Berberis sp.) on water supply lands in Connecticut.

We've been trying to get the Department of Public Health to allow us to
use glyphosate to treat water supply lands infested with barberry
(Berberis sp.), but the Department has responded by saying that they will
not approve of our use of any herbicide with an MCL listing (Maximum
Contaminant Level).

**Have you had similar issues with herbicides on water supply lands?

**Are there any herbicides that work on barberry that do not have MCLs?

**Have we ever used glyphosate on watersheds around public drinking
  water supply reservoirs? How were we able to convince regulators that
  glyphosate was safe to use?

**Do we have data that demonstrate that glyphosate and its metabolites
  will not threaten the safety of the water supply?

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13. Weed job now open! (Florida, USA)
From: Doria Gordon (dgordon(at)tnc.org)

A job description for a "Invasive Species Coordinator", located in
Altamonte Springs or Gainesville, Florida, is being distributed.
A copy of the job description can be downloaded from the WIST web site at:

http://tncweeds.ucdavis.edu/temp/florida-isc-job.doc