[MAIPC] Stiltgrass control

Mon Sep 23 12:31:32 PDT 2013

Bret: I use exactly the same approach.
Johnny

From: maipc-bounces at lists.maipc.org [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Landandforest
Sent: Monday, September 23, 2013 3:21 PM
To: <rachel at fohvos.org>
Cc: maipc at lists.maipc.org
Subject: Re: [MAIPC] Stiltgrass control

While smothering is feasible, you would smother other plants as well. While treating Japanese stilt grass with a 0.5% solution of aquatic labeled glyphosate will kill stilt grass and leave natural regeneration without harm.

 Bret Robinson

Sent from my iPhone

On Sep 23, 2013, at 12:37 PM, <rachel at fohvos.org<mailto:rachel at fohvos.org>> wrote:
Hi Marc,
In forest habitats, Stiltgrass is usually controlled by shade cast by native seedlings, shrubs and small trees, as well as herbs and grasses. Most of these forms of plant life are browsed excessively, however...

In deer exclosures, jewelweed is a great control method. Is deer management an option on the preserve and adjacent parcels?

On a very limited basis, I have smothered the seeds with oak leaves removed from my driveway. I placed the leaves in a forest exclosure beneath a red maple canopy.  This is feasible in garden-like situations.

Rachel

Rachel Mackow
Land Steward / NJISST Central Region Coordinator

Friends of Hopewell Valley Open Space
P.O. Box 395, Pennington, NJ 08534
Tel: (609) 730-1560 Fax: (609) 730-1561
http://www.fohvos.org/

-------- Original Message --------
Subject: Re: [MAIPC] Stiltgrass control
From: Bruce Barbour <barbour at RCE.Rutgers.edu<mailto:barbour at RCE.Rutgers.edu>>
Date: Wed, September 04, 2013 10:42 am
To: maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>
Marc,
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.
Bruce
================================================== 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: Barbour at Aesop.Rutgers.Edu<mailto:Barbour at Aesop.Rutgers.Edu> ===================================================== Learn more about the Rutgers Environmental Stewards at http://envirostewards.rutgers.edu/ On 9/4/2013 8:00 AM, Marc Imlay wrote:

How is Japanese Stiltgrass control going on in your park?

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 have removed all the stiltgrass every year since 2004. 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.

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.

Other explanations include deer movement and movement of stiltgrass down streams. 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.

In conclusion, we have three choices. We can apply for a large crew to join us to control stiltgrass.

Or we can give up.

For a third choice please look for stiltgrass dying from leaf blight. My 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 200 acre park.  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.

Marc Imlay, PhD
Chair of the Biodiversity and Habitat Stewardship Committee for the Maryland Chapter of the Sierra Club.

<part2.03080205.06000008 at rce.rutgers.edu><http://myhosting.com/>

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