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David Humphries

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Everything posted by David Humphries

  1. David Humphries
    Thanks for letting the forum know Ben Please keep the thread updated on Chris's condition & recovery. Thoughts with him & his family .
  2. David Humphries
    Interesting perspective Mat Roots shot or shallow plate? Any thoughts regarding wind load on its newly exposed neighbours? .
  3. David Humphries
    Would be interesting to know what the surrounding woodland cover was like at the time that this late 1700's drawing was made by the 'Major' who it's named after. Looks clear, but guess that what ever was there got left out to enhance the subject I haven't visited it for a decade or so, any idea what species of chip has been used Mr Agent-Arb? .
  4. David Humphries
    Looks dead Oops, wrong time of year
  5. David Humphries
    What would you constitute as a 'tickle' in terms of reduction spec on a 100' plane? Do you think management of trees with decay issues like this one is directly influenced by tragedies such as the fatality of the pregnant women in Kissena park in Queens last August, which I guess is relatively local and still fresh in the conscience of the public and tree managers alike ? .
  6. David Humphries
    We asked the man from BSI, and he say.................no ! .
  7. David Humphries
    I have absolutely no management concerns over the first set of images of the Chestnut Jonny. It's in woodland and even if it was of more concern regarding its profile it's protected by surrounding canopies. I merely posted it as a thread starter as you quite rightly suggest, it's a fine example .
  8. David Humphries
    Anyone have experiences/images of failures associated with these type of cankers? .
  9. David Humphries
    here's a roadside Prunus that would have me looking a bit closer if I was managing it. .
  10. David Humphries
    here's a substantial perennial canker on an oak branch which led us to reduce the height of the affected branch. .
  11. David Humphries
    I've noted it before, but not really given it a lot of thought. More than likely to be superficial as a stability issue but worth considering on an individual basis depending on degree of circumference infected. Here on Ash on a boundary veteran in Worcestershire. .
  12. David Humphries
    a thread the other day got me to thinking about what's been posted up on this issue in the past (not alot from what I can gather) http://arbtalk.co.uk/forum/tree-health-care/70269-help-damage-limes.html Definiton; fungal associated die back of the bark and cambium on stems (sometimes on branches) showing as a 'target' where annual callus material is layed down in an attempt to compartmentalize the infected area. Often focused at a point of a failed branch attachment or stub. Caused by Nectria and other fungal canker sp (and less so by bacteria sp) (various resources; Butin, Lonsdale) Here on a Horse chestnut at work, which I've probably posted in the past on other threads. .
  13. David Humphries
    Did you manage to give it a name and the type of colonisation strategy/type of decay associated with it? .
  14. David Humphries
    Hello Peter, What's your preferred climbing system for this type of tree traverse? Has anyone considered the issue as to why the tree is shutting down and the roots aren't sustaining the peripheral canopy? .
  15. David Humphries
    Page 26 http://www.forestry.gov.uk/pdf/fcpg13.pdf/$FILE/fcpg13.pdf .
  16. David Humphries
    In the Forestry commissions guide on Hazards from Trees (2000) David Lonsdale states that wind load on a target canker that has affected up to 25% of the stem circumference of a trunk can cause a snap and should probably be viewed with caution and that reduction or felling should be considered where there is a risk to target particularly where a tree is open to exposure. Having said this, I haven't seen an example of a stem target canker having failed. .
  17. David Humphries
    Shame on you Mr Curtis, it's all about the sacrifice .
  18. David Humphries
    Looks like 'target canker' any wider context shots? .
  19. David Humphries
    Not really Tony, we see such a wide variety of appearance in the Ganoderma fruiting bodies One latin phrase adopted for morphological appearance is possibly quite limited. .
  20. David Humphries
    I don't have a huge amount of experience looking at the decay of X polymorpha Dan. Photographed the fruit bodies a good few times but not looked at associated basal trunk failures. Similar to what Tony says, I understand it to be a soft rot decay similar to Kd where the cellulose is degraded. Shame you've not had the opportunity to show us a cross section .
  21. David Humphries
    I would think those are the fruit bodies of Ganoderma applanatum .
  22. David Humphries
    Nice one Bet there's some small (and a few large) mammals that will appreciate the natural bridge .
  23. David Humphries
    Had a sniff around this earlier today and remembered that I had listed it down as a wound parasite (sapwood exposed) on an assignment I did a couple of years ago. Which would of been based on reference material and I think this corresponds with what is listed in the Francis Schwarze/Engels/Mattheck Fungal Strategies So perhaps there is conflicting information out there. .
  24. David Humphries
    Fungal record database has it named as Hemipholiota populena and red data listed. Only 54 UK records listed. Not one that I have knowingly come across British Fungi - record details .
  25. David Humphries
    Got it down from where Dean? .

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