[MAIPC] Reminder

[Marc Imlay]

Let's all look for leaf blight on Japanese Stiltgrass this Summer. Question?
The three locations where I found leaf blight on Japanese Stiltgrass in the
200 acre Ruth Swann Park in Charles County MD in the past few years,
including one significant size patch, all had the native Virginia Rye
nearby. What native plants could be a source of Bipolaris?

 

Marc Imlay, PhD, Chair, MAIPC Biological control working Group 

Conservation biologist, Park Ranger Office, Non-native Invasive Plant
Control coordinator. 
(301) 442-5657 <tel:%28301%29%20442-5657>  cell  ialm at erols.com
<mailto:ialm at erols.com> 
Natural and Historical Resources Division
The  Maryland-National   Capital   Park  and Planning Commission
 <http://www.pgparks.com/> www.pgparks.com  

 

 

 

From: Marc Imlay [mailto:ialm at erols.com] 
Sent: Thursday, February 27, 2014 4:05 PM
To: 'Murphy, Donna M -FS'
Subject: FW: Feb 28th webinar @ 9:00 am - 15 minutes and questions

 

 


Japanese stiltgrass


The annual grass Japanese stiltgrass (Microstegium vimineum) can be highly
invasive, especially on disturbed sites, and it is currently widely
distributed in the eastern U.S.  In Oak Ridge National Environmental
Research Park, Tennessee, Japanese stiltgrass was ranked the most
aggressively invasive nonnative species, based on distribution, abundance,
relative difficulty of control, and ability to exclude native plant species
(Fryer 2011).  Two species of Bipolaris have been described as cause of leaf
spots and necrosis of Japanese stiltgrass in the Eastern U.S.; some evidence
is that disease may be suppressing local populations.  Host range of these
species has not been fully tested, although limited symptom development was
reported on a few important grass (grain) species in artificial tests
(Kleczewski et al. 2012).  Research is on-going about this pathogen(s), its
host, and the potential for use in biological control of Japanese
stiltgrass. If you see leaf blight on Japanese stiltgrass during the growing
season please contact work group member William L. Bruckart, III.

Research Plant Pathologist

USDA, ARS, Foreign Disease-Weed Science Research Unit (FDWSRU)

1301 Ditto Ave.

Ft. Detrick, MD 21702

Phone: 301/619-2846

FAX: 301/619-2880 

 <mailto:william.bruckart at ars.usda> william.bruckart at ars.usda.gov

 


 



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