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<div class="moz-cite-prefix">Marc,<br>
I notice you did mention herbicides. Research has shown
effectiveness of crabgrass pre-emergent herbicides on stiltgrass
and, if the site warrants it, you can also kill stiltgrass with
post emergent selective grass herbicides such as Poast and
Fusilaide. Of course, depending on your state law and the material
selected there may be a requirement to have the application done
by a certified pesticide applicator.<br>
Bruce<br>
<pre class="moz-signature" cols="72">==================================================
Bruce Barbour Voice: 908-475-6505
Ag & Resource Management Agent Fax: 908-475-6514
Rutgers Cooperative Extension Mobile: 908-309-7660
RCE of Warren County
165 Route 519 South
Belvidere, N.J. 07823-1949 Internet: <a class="moz-txt-link-abbreviated" href="mailto:Barbour@Aesop.Rutgers.Edu">Barbour@Aesop.Rutgers.Edu</a>
=====================================================
Learn more about the Rutgers Environmental Stewards at
<a class="moz-txt-link-freetext" href="http://envirostewards.rutgers.edu/">http://envirostewards.rutgers.edu/</a>
</pre>
On 9/4/2013 8:00 AM, Marc Imlay wrote:<br>
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<div dir="ltr" align="left"><strong><font color="#0000ff"
face="Arial"><span class="214054011-04092013">How is
Japanese Stiltgrass control going on in your park? </span></font></strong></div>
<div dir="ltr" align="left"><strong><font color="#0000ff"
face="Arial"><span class="214054011-04092013"></span></font></strong> </div>
<div dir="ltr" align="left"><strong><font color="#0000ff"
face="Arial"><span class="214054011-04092013">This year I
have had the ability to only remove all the Japanese
Stiltgrass over 150 acres at the 200 acre Ruth B. Swann
Park in Charles county, MD. We</span></font></strong><font
size="2"><strong><font color="#0000ff" face="Arial" size="3">
have removed all the stiltgrass every year since 200<span
class="214054011-04092013">4</span>. It should be
gone since the seed bank is supposed to be only 5
years. When I removed all the stiltgrass in the 200 acre
Swann Park in the last decade stiltgrass was gone by the
5th year and almost gone by the 4th year.</font></strong></font></div>
<div dir="ltr" align="left"><font size="2"><strong></strong></font> </div>
<div dir="ltr" align="left"> </div>
<div dir="ltr" align="left"><span class="859451909-03092013">
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span
class="859451909-03092013"><strong>So what has changed?
Climate change is one answer. For the past few years
in an open area at Swann Park I would remove all the
stilt gras and beefsteak plant in July and come back
in late August to remove late emergents. The amount of
work in August was only 10% of the amount of work in
July. Now it is an equal amount. In fact, I had to
remove beefsteak plant 3 times to be sure I got late
emergents. </strong></span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span
class="859451909-03092013"><strong></strong></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span
class="859451909-03092013"><strong>Other explanations
include deer movement and movement of stiltgrass down
streams<span class="214054011-04092013">.</span> 90 %
of the massive new populations that have sudenly
apppeared at Swann Park are not near streams and not
where people use the park. Deer may be more effective
in bringing in stiltgrass since the areas contiguous
with Swann Park are now covered with stiltgrass so it
is easier to come in. So stiltgrass is probably moving
in by deer and water from abundant sources from
outside of the park. </strong></span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"><span
class="859451909-03092013"><strong></strong></span></font> </div>
<div dir="ltr" align="left"><span class="859451909-03092013">
<div dir="ltr" align="left"><font color="#0000ff"
face="Arial"><span class="859451909-03092013"><strong>In
conclusion, we have three choices. We can apply
for a large crew to join us to control stiltgrass<span
class="214054011-04092013">.</span><span
class="214054011-04092013"> </span></strong></span></font><font
color="#0000ff" face="Arial"><span
class="859451909-03092013"><strong></strong></span></font></div>
<div dir="ltr" align="left"><font color="#0000ff"
face="Arial"><span class="859451909-03092013"><strong></strong></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff"
face="Arial"><span class="859451909-03092013"><strong>Or
we can give up. </strong></span></font></div>
<div dir="ltr" align="left"><font color="#0000ff"
face="Arial"><span class="859451909-03092013"><strong></strong></span></font> </div>
<div dir="ltr" align="left"><span
class="859451909-03092013"><font face="Arial"><font
color="#0000ff"><strong>For a third choice <span
class="214054011-04092013">please look for
stiltgrass dying from leaf blight. M</span>y
major concern about waiting for the leaf blight
bio-control to become available years from now
is stiltgrass moving in to the massive pristine
areas of the <span class="214054011-04092013">200</span>
acre <span class="214054011-04092013">p</span>ark. </strong><span
class="214054011-04092013"><font size="2"> </font><font
size="3"><strong>I found one such patch, about
10' x 20' in early September last year in
the middle of Swann Park. I left the
contiguous stiltgrass untreated slightly
down the hill for about 20' and will check
it out next week. If you find such a patch
there are researchers that may be interested
in looking at the patch. </strong></font></span></font></font></span></div>
<div dir="ltr" align="left"><span
class="859451909-03092013"><font face="Arial"><font
color="#0000ff"><span class="214054011-04092013"><span
class="875282211-03092013"></span>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"><span><span
class="890254509-29082013"><span><strong><span><font
color="#0000ff"><font face="Arial"><span>Marc
Imlay, PhD <br>
</span><span>Chair of the
Biodiversity and Habitat
Stewardship Committee for the
Maryland Chapter of the Sierra
Club.</span></font></font></span><br>
</strong></span></span></span></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"><span></span> </p>
</span></font></font></span></div>
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