treeseer

Inosculated; nice, thanks for expanding my vocabulary! did the other stem get hit too? how long ago? not much response visible yet (from here ) Is it worth assessing? Lightning TCI 2007.pdf

The black oozing resembles Phtophthora, borne by wet soil on trunk tissue. Razzle put it well: " Looking at the picture the first thing that strikes me is no evidence of root flair. If you get a chance dig down and see if you can expose the flair, although to be honest it looks like the damage is already done.The lower trunk decay is likely to be as a result of this incorrect soil level and possibly exacerbated by strimmer/mower damage from grass growing right up to the tree. Any occasion a tree appears to be sticking out of the ground like a lamp post alarm bells should start ringing."

Wish that were so in the US. As we are spellbound by scary stories of the Demons of D, we worship 1/3 rules, and defend them to the death. David yes i like that the Annex is Normative aka official; in ANSI, annexes are not. Great guidance in there, quoted in the attached attempt at busting those myths. A quixotic quest, or some chance for success? We'll see. RETRENCHING HOLLOW TREES FOR LIFE handout FINAL.pdf

Excellent suggestion. Wish I'd had a knife with me when I was shown these. I'll see about getting this done--slicing some wedges out and looking for trails or other signs.

sorry Ulmus parvifolia is an increasingly common urban tree here.

Not sure it's a pest, but here it is. Lacebark elms are in shade with poor drainage. These slits are mostly on tension side of the leaders but some are quite randomly placed. Resembles sapsucker damage in a way but there are not discrete beak-sized holes, but more like continuous slits. Several are way above the reach of vandals. No oozing or frass, seems like a pretty good response by the trees. Any ideas on cause or what else to assess?

Good call, great documentation, thanks! Snazzy piece of kit, that borescope.

The Voice of Tree Care | Tree Care Industry Association The author is a gifted authority on shrub pruning but with trees it's all about the 1/3 rule, The Heading Cut Concept. However, this falls apart when you think about it. No one can answer the question: Is it really important to leave a lateral that can assume the terminal role? If so, why? What if there is no 1/3 sized lateral? Do you have to cut back to a small lateral or bud, or do you have to cut the whole tree down? Turnbull favors the latter, destroying the tree asset rather than questioning this paradigm. Is that the right thing to do?

No idea what a heathen is, but the reaction by US arbs to this simple and logical practice is sickeningly similar to /Stephen's---in-cheek?-- comment. Case in point the article here The Voice of Tree Care | Tree Care Industry Association Quite a backward view imo; stuck in an ancient paradigm. An image from 3 years later now would be invaluable, if anyone happens to be passing by...

Hama dood help me out here with the difference between decay fungi and pathogens if you could please.

? I've fumbled with other approaches over the years and tend to think this one works. Not always so concise; sometimes do 10-20 pages, depending...But nutshelling it like this gives the user an executive summary they can wrap their heads around with little effort. Do I ever get feedback? Not enough obviously; maybe that's why I'm talking to you now! I'm taking an Environmental Law course at present; the instructor offers a "One-Minute Lawyer" synopsis video for those students too lazy to read. https://class.coursera.org/environlaw-001/wiki/view?page=oneminlawyer Welcome to higher ed, and life in general, in 2013. I'm playing with "One-Minute Arborist" vids, liking the challenge of synopsisation that way. No bull, no fluff, no gas passed, just the facts, is the goal. So many reports (too many of mine as I read them) smell of self-gratification, showing off one's knowledge instead of doing the job and getting on with managing the tree instead of the client, and the arborist's ego. Well that may be harsh...but painstakingly cataloguing extraneous information is just not all that productive. Inoculation = introducing microorganisms into the soil to compete with and potentially antagonize wood decay fungi. btw "Retrenchment" may be making its way into the US pruning standard. Ted's work and yours reverberates in the new world. Thank You Sir! Progress is painful but it's gotta happen.

Rethinking future value, and specifying retrenchment as an option. As with this other tree; the base of the one on the left is half-circled I.d. conks.

True enough, as the trunk is pushing back all the stronger! The battle's over; the root looks ready to break. Re satisfaction of popping sound, yes, like uncorking fine wine, or the climax of a...good time.

O sorry--leaves like willow, Q phellos, way overplanted here. The girdler's just an aggravating factor at this point; the other Inonotus conk is opposite the girdler so infection likely throughout. Look at the right side of the girdler--wounded and weak. If dirt was removed we would see possible pruning locations. Q phellos thick bark, seldom grafts. Last pic shows central decline. Prognosis seems to be an ongoing pruning and risk assessment chore until it's judged irremediable. Tomorrow i get the client goals from the campus arborist, but it feels like felling might be up on the list of options. not from present risk, but declining future value.

Not quite as impressive but not bad for these parts. In the main quad at a famous university. Causes for concern, and for requests for drilling, but I do not want to break walls.

"It's 20ft from a building, and the base of the limb is above the height of the building" 20 feet; so if it's reduced to 19' long, it should not be a hazard then, unless this is a rubber tree and it bounces a long way... Seriously, a big wound exposing much heartwood sounds like a lovely benefit to the decay fungi that is.

I knew somehow that you would. Fine looking work! And clear specs on pruning. Getting crown in line with itself more, and the surrounding canopy; very overlooked risk mitigation strategy. What species is that leaning cavitated arboreal wonder underneath the servicetree? It will no doubt benefit from increased exposure to light.

One reason may be Kd, but the primary stressor imo is...gravity. Cool to see how the tree added that big burl that the fissure must go around. That burl may be all that's holding up that stem/tree. So the choices seem to be: 1 let it fail, 2 remove weight (and benefits), and 3 cable. Or is there a 4th solution? Gorgeous tree btw! Synchronous posting here; so removing benefits/restructuring was chosen over the cable option. Wondering why?

good on you for taking the time to actually hav a root about after my little prod the other day! I hear and obey, o Mighty Masta Phi Slamma Hama! "The statement above is in my opinion the right path, in time this avenue may prove highly beneficial in limiting damage by Phytopthoras. Been proven for a long time. You did see the part about surgery and heat, right?

A brief look at treatment options, via Sinclair: p. 354 "The nuclear condition of somatic structures and all mature spores is diploid (or polyploid in some strains). Spores of all types require free water for germination." p.356 "Wounds and intact succulent plant parts such as shoot or root tips are suitable for infection. On reaching a suitable surface, a zoospore rounds up, loses its flagella, secretes a cell wall (encysts), and produces a germ tube that penetrates the plant and gives rise to mycelium" "The generalists that cause much damage to trees and shrubs are, except for P. ramorum (discussed in a later section), soilborne organisms whose activities tend to be favored by wet sites - soils along watercourses or that have impeded internal drainage or are irrigated by flooding. Such conditions not only promote the pathogens' infection. Roots stressed by oxygen deficiency in waterlogged soil exude more amino acids and other substances attractive to zoospores, and their resistance to pathogens is impaired. Saline soil or previous water shortage also lowers plant resistance." "Once established in a new location, even though the site might be seasonably dry, a Phytothera may persist and cause damage for years unless the microbial population of the site suppresses it through competition and antagonism." "Managmetn of Phytophthora disease is difficult. Awareness of the need usually begins with a disease outbreak. Disease spread can be retarded by restricting site disturbance and movement of plants, soil, water, and people. Outbreaks in plantations, orchards, and nurseries can be avoided or minimized by site selection to avoid wet or poorly drained sites and/or by improving drainage, ensuring clean irrigation water, and utilizing drip or trickle irrigation rather than overhead or flood irrigation." "Disease control with pathogen-suppresive rooting substrates and fungicides is possible in nurseries. Phytophthera activity in soil can be suppressed somewhat by calcium fertilizers or soil amendment with gypsum. Plants in nurseries, orchards, and landscapes can be treated prophylactically with certain fungicides and resistance-inducing chemicals such as potassium phosphate. Expansion of basal cankers on a diseased tree can sometimes be halted by heat or surgery. Solar heating of soil beneath clear plastic can suppress Phytophtoras in regions of warm climate. p.362 "Surgery and heat treatment to halt the enlargement of basal cankers on orchard and shade trees have been demonstrated but are not often used because they are laborious, destroy healthy tissues around cankers, and may fail to halt tree decline. Some orchardists utilize resistance-inducing or Phytophthora-suppresive fungicides to limit damage." p.364 "P. cinnamomi attacks the small absorbing roots and in many hosts also invades larger roots or the butt and mainstem, growing mainly in the inner bark and cambial zone. It derives nourishment from recently killed as well as living tissues, and it reproduces in the dead tissues." "P. cinnamomi in requires warrm, wet soil for significant pathogenic activity. It does not persist where soils regularly freeze deeply in winter." "The interval between infection and sporulation of P. cinnamomi is only a few days, so disease can increase explosively if warm infested soil is flooded and waterlogged. Microbial populations influence the conduciveness or suppresiveness of soils to disease caused by P. cinnamomi." "In one study with P. cinnamomi in Rhododendron obtusum (Hinodegiri azalea), plants that were deliberately innoculated before outplanting in a landscape situation failed to thrive, and many died. In contrast, similarly inoculated plants that were treated with fungicides before outplanting performed normally." "Damage by P. cinnamomi in orchard and nursery situations can be lessened somewhat by amending surface soil with gypsum (hydrated calcium sulfate). This substance and other calcium compounds interfere with sporangium formation and zoospore function and thus suppress infection." p. 366 "Ectomycorrizal fungi protect some pine rootlets from P. cinnamomi, but this is not sufficient to prevent littleleaf disease on soils with conducive physical characteristics. The disease still occurs, although the magnitude of the problem has diminished. This change reflects tree planters' recognition and avoidance of high-risk soils, replacement of susceptible trees with tolerant ones on many sites, and improvement of soil structure and microbial activity during several decades of forest regrowth." "Damage in nurseries can be minimized by using pathogen-suppresive container mixes; irrigating with pathogen-free water; covering soil in container mixes; covering soil in container nurseries with woven ground fabric, gravel, or coarse mulch that prevents transfer of pathogens in splashing or running water from soil into pots; and *adding calcium chloride or calcium nitrate to water or liquid fertilizer. Calcium ion (CA++) at nutritional concentrations was shown to cause P. nicotianae zoosporess to encyst without contacting susceptible tissue and to interfere with infection."

"White 'stuff' (the mycelium of Armillaria) was mushroomy in odour & spongy How does one tell that mycelium then from other organisms that have similar signs of white spongy mushroomy stuff? Reminds me of the rhizomorphs; oft times i run into dead black roots with odd branching rectilinear and tend to jump to questionable conclusions. I may need a higher power hand lens. "Chisel is the circular one used to take the bark out for arborsonic sensors Arborsonic, the tomo from hungary? They did not use such a chisel 2 years ago. Most tomo sensors attach by nails, which do not yield perfect results, but that chisel damage looks significant. That's the curse of quality photography; if your pics were crappy like mine the damage would not look as bad!

Aside from phosphite, many other treatments can be applied. Sifting through the list in Sinclair's text on Diseases of Trees, downloading these: https://www.dropbox.com/sh/b5hnt9tjp2ot0vq/o3S9V1lOUa?n=15346635

was that white stuff slippery and stinky? fibrous and firm? evidence of rhizomorphs- visual, or circumstantial? And where was this evidence, how far away? Circular chisel--powered by motor? Inscrutable xylem penetration. tisky tisky. I used a chisel powered by compressor at Biomechanics Week on sgr's. It has some advantages I suppose but if manual techniques work well why change, says this closet Luddite. That sampling location and size is same as requested by labs in US.

Would it make sense to look for mycelia and shoestrings, to confirm or deny Armillaria? Not sure how much ID affects prognosis and esp. treatment...? As for guessing I'll keep my ignorance to myself, in lieu of more data.

The first is the Official form, as pulled from the web. The second is very simple. adapted from the third. "If you cannot bring good news, then don't bring any." R. Zimmerman usfs risk forms utrm.pdf Tree Risk Management Form 130407.docx Basic_Tree_Risk_Assessment_Form.pdf