[MAIPC] How we found a biological control for Multiflora rose and tree of heaven

[Richard Gardner]

 Ailanthus has a recently accidently introduced biocontrol - the Spotted Lanternfly, Lycorma delicatula. From observations in the field it may gently feed on Black walnut, but not to the degree of endangering it. Grapes, wild and domestic, is the main non-Ailanthus issue I see in Berks County, PA. A recent walk at Blue Marsh Lake had dead Ailanthus trees, probably from SLF. Further along these lines since Ailanthus is primarily an ecotone plant, the SLF follows a similar pattern. Which is why SLF thrives in cities. Forests are not even marginally endangered from SLF. However, the Gypsy moth is devastating to forests in my area. If anyone takes the time to read the work by Matt Kasson, Mark Schall, Jay Stipes or me there are more insights. One final thought on Ailanthus is that there are several "biocontrols" already present - Aculops ailanthii, Atteva aurea, Samia cynthia (which I have yet to recognize) and various pathogenic fungi in Verticillium genus and Fusarium genus.
Multiflora rose is also being attacked by a system with Rose-rosette disease in partial and full sun and another pathogen which causes chlorosis and leaf drop in the forest. This is a system apparently composed of an eriphyoid mite (possibly Phyllocoptes fructiphilus) as the disease vector, possibly birds, Hymenoptera and Lepidoptera used for phoretic transport, ... . I do not see any evidence of airborne spread of Rose-rosette disease except as the eriphyoid mite possibly could be windblown over short distances.
Yesterday when I was trying to calculate the distances I walked on Blue Mountain between Rt. 183 and Port Clinton (actually Shartlesville) on the border of Berks and Schuylkill Counties I noticed that Google Maps is not to be trusted when walking the Appalachian Trail. The mistakes were incredibly huge and could easily get someone unfamiliar with the area completely lost for hours. Right now I trust the KTA maps for at least this section of the AT.
If anyone who is fully vaccinated wants to ramble along the Appalachian Trail between the Susquehanna and Lehigh Rivers or in the Birdsboro/Hay Creek/French Creek area of southern Berks County, PA I am back to chasing trees and other plants. (The great thing about chasing trees is that they are slow enough I can catch them.) I am willing to do up to 10 miles, depending on terrain. My dog Sir Isaac Newton is probably good for 15 miles as he looked disappointed with yesterday's 8-9 miles.
                                                                          Richard Gardner                                                                          northern Berks County, PA

P.S. I have about 20 Castanea dentata seedlings from wild seed, not hybrids, which need a new home. If anyone happens to be in the area, you are welcome to them.

    On Tuesday, March 1, 2022, 10:48:04 AM EST, <wildmarcimlay at gmail.com> wrote:  
 
 
If you see something, say something.

  

When the leaves of wineberry emerge this spring, be on the lookout for damage to wineberry that is not happening to local native blackberries or raspberries. 

  

Marc

  

From: Marc Imlay <ialm at erols.com> 
Sent: Friday, February 25, 2022 4:32 PM
To: 'Tancos, Matthew - ARS' <matthew.tancos at usda.gov>; 'Jil Swearingen' <jilswearingen at gmail.com>
Subject: wineberry

  

Have we found a pathogen that has a major impact on wineberry but not on our native blackberries or raspberries? Marc

  



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