[CANUFNET] Sugar Maple Decline Bancroft Ontario near Algonquin park

[ConsultingArborist]

Hi.

Like Michael said, those trees need to be looked at in the field. You've
listed a bunch of arthropod pests which are relatively minor (gall mites,
leaf miners, erineum mites, leaf rollers, etc...) and I highly doubt would
be the cause of any significant decline or dieback. When I hear of sugar
maples declining in a "managed maple forest", my first question would be if
there is any tapping history and, if so, whether or not the guidelines for
# of taps per tree have been adhered to (i.e., is there a history of
overtapping?).

Oliver K. Reichl, B.E.S.(Hons)
Principal / Consulting Arborist-Ecologist*
Arborsphere Arboriculture & Urban Forestry Consulting
18 Larue Mills Road
Mallorytown, ON, K0E 1R0
Tel: 613-213-6840 <613-923-8833>
Web: www.oliverkilian.com/treecare, Facebook
<https://www.facebook.com/pages/Oliver-K-Reichl-BESHons-Consulting-Arborist/192125024193992>


* ASCA Registered Consulting Arborist #553
  ISA Certified Arborist #ON-1178A
  Ontario Butternut Health Assessor #039
  ISA Tree Risk Assessor Qualified
  OUFC Heritage Tree Inspector


On Mon, Jul 6, 2020 at 11:00 AM Michael Richardson via CANUFNET <
canufnet at list.web.net> wrote:

> This gentleman needs some in the field help.  There are any number of
> Foresters and Arborists who should be able to help.
>
> The problem needs to be identified before any treatment.
>
> He needs to check for Cryptostroma corticale (sooty bark disease) as one
> of the less obvious issues.
>
>
>
> > I am a volunteer with  the Master Gardeners of Ontario and field
> > questions from across Ontario. I received a desperate request from an
> > individual in the Bancroft area regarding managed maple forest in
> > decline. Canopy dieback, heavy insect damage including caterpillars,
> > weevils, and aphids, along with mites and disease pressures seem to be
> > occurring.
> >
> > In the one photo provided, I can observe two species of weevils (one
> > appears to be Phyllobius oblongus - European Snout Beetle), a green
> > aphid issue (with associated honeydew), some minor leaf miner
> > activity, eriophyid mites with what may be erineum galls, minor leaf
> > spots, a leaf roller, and webbing from unknown source (possibly mite).
> > He reports additional caterpillar activity, which I presume are gypsy
> > moths as they are widely reported in the region this year.
> >
> > He is unable to find anyone in the area to provide him support and
> advice.
> >
> > Based on my reading, I have advised soil testing with particular
> > attention given to phosphorus levels and potential  imbalances in Ca,
> > Al, Mg and Mn. If consistent with soil tests, I have recommended
> > liming based on recent article by Moore (2020).
> >
> > If open land is adjacent to the maple stand, I have also recommended
> > creating a meadow buffer to support natural predators like lacewings
> > and parasitic wasps to help control the aphids and insect pest
> > populations.
> >
> > Please let me know if this advice is sound and what other measures
> > this individual might take. Could you recommend advisors or
> > consultants in the Bancroft area that might assist this landowner?
> >
> > Thank you for your attention to this inquiry.
> >
> > Best Regards,
> > Catherine Kavassalis
> > Master Gardeners of Ontario
> > MGOI.ca
> > Admin. https://www.facebook.com/groups/MasterGardenersofOntario/
> >
> >
> >
> > A few of the articles I have reviewed:
> >
> > Bal, T. L., Storer, A.J., Jurgensen, M.F. et al. (2015). Nutrient
> > stress predisoses and contributes to sugar maple dieback across its
> > northern range: a review. Forestry 88: 64-83
> >
> > McLaughlin D.L., Linzon S.N., Dimma D.E., McIlveen W.D. (1987) Sugar
> > Maple Decline in Ontario. In: Hutchinson T.C., Meema K.M. (eds)
> > Effects of Atmospheric Pollutants on Forests, Wetlands and
> > Agricultural Ecosystems. NATO ASI Series (Series G: Ecological
> > Sciences), vol 16. Springer, Berlin, Heidelberg
> > https://link.springer.com/cha.../10.1007/978-3-642-70874-9_7
> >
> > Moore, Jean-David & Duchesne, Louis & Ouimet, Rock & Deschênes,
> > Marie-Lou. (2020). Liming improves sap characteristics of sugar maple
> > over the long term. Forest Ecology and Management. 464. 118044.
> > 10.1016/j.foreco.2020.118044.
> >
> > McKenney, Daniel & PEDLAR, JOHN & LAWRENCE, KEVIN & CAMPBELL, KATHY &
> > Hutchinson, M.F.. (2007). Potential Impacts of Climate Change on the
> > Distribution of North American Trees. BioScience. 57. 939-948.
> > 10.1641/B571106.
> >
> > OMAFRA. Beneficial Insects in Tree Fruit Orchards in Southern Ontario
> > www.omafra.gov.on.ca/english/crops/facts/96-029.htm
> >
> > Tara L. Bal, Andrew J. Storer, Martin F. Jurgensen. Evidence of damage
> > from exotic invasive earthworm activity was highly correlated to sugar
> > maple dieback in the Upper Great Lakes region. Biological Invasions,
> > 2017; DOI: 10.1007/s10530-017-1523-0
> >
> >
>
>
>
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