Jump to content

Log in or register to remove this advert

David Humphries

Veteran Member
 View Profile  See their activity

  • Posts

    23,484

  • Joined

  • Last visited

  • Days Won

    3

 Content Type 

Everything posted by David Humphries

  1. David Humphries
    The ever so slightly camp 'failed veteran oak airspade pathology' lunge .
  2. David Humphries
    We had the privilege of collaborating with Paul recently, getting to see the Arbotom first hand. Paul's proficiency and technical knowledge is first rate & I would recommend anyone with a thirst for learning about decay detection and has access to the types of trees that he would like to work on, to get in touch. .
  3. David Humphries
    Easier when they're in leaf. Options for survey inspections can include drones, pole cameras, mewps, climbing, but mostly ground based inspection. You'll be aware of this LTOA guidance doc ? http://www.ltoa.org.uk/documents/doc_download/193-massaria-disease-of-plane-practical-management-guidance .
  4. David Humphries
    Varies from what we see, if I get some time I'll post a series of cross sections showing different rates of decay progression at some point. .
  5. David Humphries
    That's how I read it Chris, the dysfunction usually (but not always) progresses down the rays in a wedge shape toward the core, slowly spreading outward until there is little (then no) functional wood alive on the opposite side to where it starts. .
  6. David Humphries
    Removed as it was a hazard to an ongoing construction project. We have many others of varying dysfunction that we monitor, as not all Massaria branches require removal depending on target. .
  7. David Humphries
    On top of a whole heap of massaria affected branches taken out today, this one shows the early onset of the dysfunction well (on a signifcantly sized branch) .
  8. David Humphries
    Alec, I've used Armillatox for eradicating Armillaria in the past, though this was a fair while ago pre understanding (a bit) about the complex relationships within the soil. I only mention the identification angle as it's possible your historical infection was another species of Armillaria feeding saprophytically on dysfunctional wind rocked/severed roots, or old dead roots from previous removed trees. Possibly too long ago to recall but I wonder how the vitality of the two trees in question were at the time or whether it was just the presence of Armillaria fruiting bodies that led to the decision? Can you recall where they were fruiting? Old thread on the (mis)identification of Armillaria fruit bodies, which is quite an interesting case study. http://arbtalk.co.uk/forum/tree-health-care/81240-armillaria-investigation.html .
  9. David Humphries
    that birch is absolutely fantastic .
  10. David Humphries
    Fine thread Alec, thanks for taking the time to put it together. Was the species of Armillaria ever determined? Obviously there are more benign species than A. mellea? .
  11. David Humphries
    A few images of Phoenix trees on this previous thread..... http://arbtalk.co.uk/forum/tree-health-care/7339-ents-make-move.html .
  12. David Humphries
    A great tree indeed Will, have snuck in a couple of times myself in the past to revel in the sheer majesty of what's a beast of a tree. Few other shots of it on this previous thread (post 5) http://arbtalk.co.uk/forum/general-chat/73807-great-british-trees.html .
  13. David Humphries
    other neglect issues, including car fires, vehicular impact & graffiti........ .
  14. David Humphries
    Construction site tree protection issues...... .
  15. David Humphries
    Dog (dog owner) issues.... .
  16. David Humphries
    Not so much Tree neglect, more a case of Tree assault Root issues...... .
  17. David Humphries
    Rigidoporus for sure. Was the protagonist/culprit of the previous failure identified? .
  18. David Humphries
    Chris do you subscribe to 'Urban Forestry and Urban Greening' ? There's a study being published soon looking at the effect of Cooling by London's small and medium greenspaces, entitled "The impact of greenspace size on the extent of local nocturnal air temperature cooling in London" I've only seen a manuscript version so far, as we supplied some information on tree populations at one of my sites, but I suspect you will find it very interesting. Keep an eye open for it Monteiro, M.V., Doick, K.J., Handley, P., Peace, A.,The impact of greenspace size on the extent of local nocturnal air temperature cooling in London, Urban Forestry and Urban Greening (2016), .
  19. David Humphries
    Never a day off in Arb, you know that .
  20. David Humphries
    I don't believe people would actually think there's one bit of truth in that what so ever .
  21. David Humphries
    I would agree with Mr Nicoll regarding the problems using 'features' for identification. The reported morphological features we find described in the text books, produce inconsistencies when taken together to be sure of leading to a positive I'd between these two Ganoderma species. We've had sporophore samples studied by a mycologist that we believed to be one or the other (due in part to our hunches ) turn out to be the opposite when microscopy is used to look at the shape and size ranges of the spore. .
  22. David Humphries
    Probably
  23. David Humphries
    I'm over there in a couple of weeks to meet with Simon on a cross CoL/RP working party on tree management, I'll see if there's been an update on the findings from the research. .
  24. David Humphries
    Guess no one's fancied putting their nose into it to research the issue lol ! Just read this attributed to the New York City Department of Parks & Recreation "The high salt content in dog urine draws water out of tree roots and causes the soil at the base of trees to crust over making it virtually impenetrable simulating the effects of a drought. Dog pee, like all mammal urine, also contains ammonium which can be very damaging to tree bark in large doses making the trees susceptible to burrowing insects and oozing diseases like “bacterial wetwood.” .
  25. David Humphries
    Probably already has, you two share a monopoly on the word enthusiasm .

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

Articles

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

  I accept