treeseer

well i've been using 50% strength on stumps and it works, so maybe it can also be absorbed in phloem and translocated to roots. and it was suspected in the araucaria in queensland but i am no chemist.

pruned by saw or storm? the before shows central leader bent as if it was broken. trunk is riddled with cankers, not just the big cavity--no david no fb's seen. i suspect the wind tore the top off, but i'll ask DJ to post the in-tree pics he got. could've been lopped early on and that's how it got cankered. chicken or egg first?

"It could be..........let me toss a coin well then better do it quick b4 folks get the wrong idea "Bit more than just a tickle. mmm i've seen your gang scratch a lot harder! "Had it been reduced before? Untouched by the hand of man as far as i know. had the helper climb (it was raining) but he did not report previous signs of pruning.

Tearing into the collar that near a footpath...and this is not the Ecology forum... Here's a tickle taken out of a liriodendron with a Humongous Hole (~50% circ., >80% hollow)mid-stem. All cuts to nodes that presently have laterals. left 2 lower limbs alone--not much impact on stability, and they nourish the woundwood around the canker. Plus they were over the neighbors' yard and essentially their problem. Lightens the load, c u in 3 years to restore. Prognosis: sprouting at cuts 1-2'/year, able to take off 1/3 next time to mitigate crowding and bad forks.

pssst it's a decoy post. salt is not new, and glyphosate needs no foliage contact. but don't tell that to the poisoners who lurk here for ideas. sssshhhhh

", do you care to elaborate? I'm going to have to buy it just to read the last chapter now. Confidentiality constrains, but i can say i sleep with the bloke's wife, and he's all for it. "Does it cover or update the elements of the first two volumes. I've a reading list which includes them as well, which is the reason for asking. o i see; then no, different research reports in 1 and 2. Some may be different reports of ongoing or related studies. What are you studying for, Master of Rootology?

I hope someone stays on top of the prosecution and makes an example of the poisoner. did they confiscate his arsenal of poison? re legal action, along with tree killing is there perhaps some crime of intentional polution that could get tacked on? What else might that poison affect? That said, does council have a policy to address the effects of trees on adjacent properties? Here's a case from N Queensland; same drill and kill for view thing. page 22 2011 February Arborist News.pdf First author recently moved to NZ, coincidentally.

Certified since '92, BCMA since 2004. Serves me well in my market, and some aussies and brits i know would say the same in theirs. As a home study tool it helps to focus one's time into productive learning.

not really clear on why holes were not dug deeper to increase soil volume. stunting scenario seems possible--hope you are retired before. jeez i thought i had problems with clay...!

I've read most of it, after hearing many of the talks live at the symposium. Good perspectives from around the world on confronting the subterranean unknown. The last chapter is the worst; total rubbish, do not waste your time on such stuff! well maybe it's not so bad tight peer reviews on all that, I'll warrant.

Dujesieffken's work; where's that go...

That was 5 years? nice callus but still big wound. Black rubber tacked over can allow more scarring interior.

Maybe all the cambium was torn off, and those are technically not cambium but other parenchyma cells. This exposes the myth that only a thin layer of cells on the outside of the tree is capable of cell division. Parenchyma cells deep within rays and elsewhere in the symplast can divide, given the room. That squirrel damage appears fairly old.

"Wondering what the likelihood of a target being present at the moment of failure. I agree this one is way overblown--how many people are out and about in storms? but in any case often enough to hit the news now and then. Clear-day failures are common enough to plan against. "And if, as a consequence of failure, the tree declines and dies, is that such a bad thing. Natures natural cycle." Perhaps so, but if we are artificially accelerating that cycle by clearing and creating "edge" trees (not the guitar player), then ought we not mitigate that unnatural (and it's another argument whether humans are natural) acceleration by pruning back limbs that are sprawling into the openings that we made? The works are for the trees' sake first (in order not priority), and for the sake of their contributions to us and the earth The infinitesimal increase in public safety is important if only as a symbol. Saproxylics are not so uncommon that too many properly retrenchable trees must be ruined as trees. Let's strap more rotting trunks to sound trunks, and let em munch away! And tone you are absolutely right about obsessions and biases--but you do see the girdlers are only present where the fb's are, right?

"I spec'd the work on the oak for the safety of the pedestrians and vehicle movement below but equally (which is perhaps debatable) for the trees benefit. No debate here. Trees failing uncontrolled near people cannot be taken as a good thing. Also, the value of trees near people to people adds to the potential consequence of failure. "The reduction reduces the leverage which reduces the chance of it failing. It really is that simple. Re a little knowledge, when new trends come out it is easy to overreact. I wonder if the pendulum will swing back, from the value of saproxylics to the value of tree contributions. On another note, in the op of this thread, the Merip conks seem associated with stem/root-girding roots. i've seen this often enough to suspect it's not coincidence.

Rodrigo held up a copy of Fungal Strategies of Wood Decay in Trees. “Here’s the answer, amigo—it looks like this picture of Ustulina deusta,” he said, quoting a passage from the book, “’With this kind of decay, acoustic velocity is not reduced, even at the late stage of decay.’” He put the book back into our crate of references. “The other stems and the root collar appear sound, but the root zone is limited by terrain and many competing shrubs and trees around it. Now that we have collected more information, we can form new theories.” “Exactly!” I said, clapping him on the shoulder. “When your working hypothesis does not make sense, return to your senses. Preclude premature preconceptions as you systematically assess the evidence. If you had used your hand lens on those blotches, you would have seen perithecia, openings like pores, not looking like tar at all. The epistemological order is sensation to perception to conception, also known as data to analysis to conclusion. We must fit our theories to the facts, not vice versa.” “As for nomenclature, this disease has been reclassified from the genus Hypoxylon to Ustulina to Kretzschmaria. In the field, we will stick to the more general term ‘hypoxylon,’ with a small ‘h’. As for sealants, some formulations have improved on tar, but they are still experimental. So what management options would you consider if this multistemmed specimen was yours?” “In a healthy tree, the pathogen is usually compartmentalized and invasion or spread is stalled,” Codit said, remembering his Modern Arboriculture. “The big question is, will the infection break the interior barriers and infect the other stems? For now, I would lightly reduce the sprawling ends, cable these two stems on either side of the infected stem, and check once a year to see if the hypoxylon is spreading. “We have time to see how the tree responds to root invigoration,” Rodrigo added. “This prescription for soil improvement and mulching might increase the tree’s health and resistance to disease. Research shows that chipped hawthorn wood may have some fungicidal value, so we will apply it.” Our client had been listening as she approached the arborists from behind. ”That all sounds good to me, gentlemen,” she WHAT’S THE DIAGNOSIS? agreed. “Please proceed, and leave me the bill when you are done. Where are you off to, Dendro?” she sadly asked, seeing me turn to leave. “I’m pursuing a long-standing investigation,” I answered with a nod, pulling my hat brim over my brow. “Drop me a line if anything arboricultural goes awry.” Detective Dendro fights for Truth, Justice, and the Arboricultural Way. References Corner, E.J.H. 1949. the durian theory, or the origin of the modern tree. Annals of Botany 13:367–414. Schwarze, F.W.M.R., J. Engels, and C. Mattheck. 2000. Fungal Strategies of Wood Decay in Trees. Springer, Berlin, Germany. Shigo, A.L. 1991. Modern Arboriculture. Shigo and Trees, Associates, Durham, NH. 423 pp. Tee, S.P., and M.L. Wee. 2001. Trees of Our Garden City: A Guide to the Common Trees of Singapore. Nature’s Niche, Singapore.

Looking at that stump it's hard to call that 70% wood...but yes K deusta is hard to suss out by mallet. but there are other means. it's horiz spread that matters, far more than vertical. wrote attached re schwarze and k deusta; reviewers thought i got the terminology right. Dendro 11 Bumpy Blackness (2).pdf Dendro 8 Terrible Tar.pdf FUNGAL STRATEGIES OF WOOD DECAY IN TREES.doc

I agree that the shape and size of the crown are key factors re risk. They are also the easiest to mitigate, leaving very low risk. Please explain; I thought that the extent of wood left had everything to do with failure. We deal a lot with K deusta here, and find that fracture is readily avoided with care.

You might take a trowel with you. That buttress is expanding in a flattish area of the flare. i would suspect root issues that might be readily sussed out with a little digging. Quite the lovely crown though.

probably. maybe. those funds are discretionary, and historical societies typically love buildings but are slow to see tree value. that monolith i posted recently was something of an exception, but if it's got a plaque it's got a better chance. only virtually. my small experience with J nigra is of few conks visible. and it looks like there has been no encouragement of mycorrhizae. but i will ask. .

its a SYN" Respectfully, Sinclair/Lyon found genetic differences, while i do not know if my old professor dr. grand (a great teacher btw) did dna sequencing. thanks for citing a paper from my old U though; still work at their arboretum now and then. you might wanna see G. oregenense too for the redwoods out your neck of the woods, also of the resinaceum lucidum looking persuasion well my neck is not that long; that's 3000 miles away.

looks more like it's just dried sap than a bacterial infection; not uncommon to have some (maybe not that much) in either genus. maybe pop it off and see where it's coming from. maybe the buttress is expanding too fast to hold it all in!

Just to show you brits that not all americans have zero tolerance of compromised trees: Nice job showing care of an abused tree. What happened to the other walnut? At 1:02 you speak well of the battle between decay and new growth, showing burls from callus with fresh pruning wounds from sprout removal--why were these sprouts removed? Trenching roots was one problem hard to remedy, but soil compaction and fill on the flare (evidenced by the "telephone pole" look) can be mitigated by clearing the flare and root invigoration. If the pull test opens that crack too much, what to do?

I get a bit nervous at this prospect, given the damage that installing posts can do...what about 6" of shaggy mulch?

Fill on the flare and fungal activity: a frequent combination in urban trees. Thanks for posting though; got me looking into G. species. What is typically called lucidum here i have been questioning, because on many the top is not very shiny. Turns out that curtisii and resinaceum are nearly identical and both are quite indistinguishable with lucidum without going down to the DNA level. he calls them all "laccate" and moves on. The interesting part to an arborist is that Sinclair notes conks have been observed on q rubra for over 30 years with no effect on crown health. work with resistance in infected seedlings also throws the whole concept of "pathogenicity" into question.