treeseer

Looking at the image, one wonders at the expense of moving all of that extra dirt. Paul yes the UK standard is far better than the US but they both agree on removing the packaging. Nursery people in the US intimidate buyers not to remove, in many cases so their poor product stays invisible. I've found wire decades old in the soil, but it's not quite as damp here...waiting until the plant is set to remove the top parts seems to make sense, but... If the packaging covers the flare, how does the planter know how deep to dig the hole? Dirt on stem tissue is a big No No.

How do the treatments for these diseases differ?

3m will be a lot of lever arm gone! Fortunate that lower limbs were retained; it should sustain that reduction without missing a beat.

I see this a lot and it seldom causes failure. structural integrity cannot ever be guaranteed

Absolutely true. Easy enough to get more info by cleaning the wound and probing. Thanks for posting good pics of the outside signs (symptoms?) Last pic shows missing bark at base; perhaps killed by previous exudation? What is that round object? We can throw darts all year re pathogen ID. <5 minutes with a screwdriver might inform the discussion immensely.

In your last pic there is a round object at the base of the tree. A fungal conk? The primary infection court there is self-inflicted; included bark in the main fork. Why not have a poke around there? Very common in US. See pic in attached. black droplets are coming out of ‘bleeding lesions.’ It looks like a soil-borne organism, such as Phytophthora sp., is colonizing the phloem tissues under the bark. These lesions are seldom a structural concern, because the infection is in the phloem. This pest should be managed with IPM treatments aimed at compartmentalization. I flipped through pages 354–367 of my book on diseases. “‘Remove soil from stem tissue, dry the area, deeply aerate nearby soil, clean and heat the lesions, and amend the soil with calcium fertilizer and beneficial microorganisms to help speed compartmentalization.’

This is true.

Very common in US. See pic in attached. "Here at the flare, the trunk broadens to form buttress roots. Are those black droplets fresh paint or something? They look so shiny. ” “To realize that you do not understand, is a virtue,” Ru noted, quoting the Tao Te Ching. I nodded as I pulled a chisel out of my bag. “Those black droplets are coming out of ‘bleeding lesions.’ It looks like a soil-borne organism, such as Phytophthora sp., is colonizing the phloem tissues under the bark. These lesions are seldom a structural concern, because the infection is in the phloem. This pest should be managed with IPM treatments aimed at compartmentalization. I flipped through pages 354–367 of my book on diseases. “‘Remove soil from stem tissue, dry the area, deeply aerate nearby soil, clean and heat the lesions, and amend the soil with calcium fertilizer and beneficial microorganisms to help speed compartmentalization.’ AOD is no cause for hysteria. It is most often associated with dirt on stems. DD LLL 1406.pdf

Their location indicates they are NOT wood decay fungi imo.

Good responses; agree 100%. To confirm you could take a mallet up and tap the surrounding wood to listen for hollows. Also if oozing or crumbling discharges from these it can be a sign of canker. But that's rare ime.

Ooooo that last pic is gorgeous!

The branch canker is a perennial 'target' canker by the looks of it; if the scar tissue on the edge is sound, these are often low risk. The orange in the 2nd pic looks like good response growth; is there oozing?

A spiraling wound, with response growth not looking that strong. You can find out more by excavating soil under the wound to check root condition, and by pulling back dead bark to assess condition around the margins. Lightning often causes spiral wounds. Root damage is also a possibility. not sure a bacterial canker would cause that kind of wound, but i am not an HCBC expert.

When it comes to predictions about tree biomechanics, does anybody? My white flag is waving as well.

Sorry to be anachronistic; I was asking about assumptions like "...the net removal of a large amount of ripe buds will set the tree back considerably." It might set back growth perhaps, but advance the tree's health condition. and "In spring when it flushes it may not have enough transpiration suction for proper vascular function..." If there is less distance to suck, is that not a benefit that mitigates the loss? "...and needs to expend its reserves on redressing the root/shoot balance, or roots will die." What if the tree had resources stored sufficient to cover the loss? "It may bounce back but at quite a cost." Or at no cost? "Meantime the fungus marches on. What if CODIT happens? "There is room for an argument that the removal of canopy removes the energy sourve of a pathogen and slows its development. But if the pathogen is feeding on cellulose and/or lignin, it won't be slowed at all. Net gain for pathogen. Could tip the balance. Worth a go in a 'nothing to lose' scenario." Sorry not following that last bit at all.

Talks there were only ~20 minutes. Luigi was talking a mile a minute, in Italian of course, but he was kind enough to send me the pdf. Yes I've gone back to see Arm infections dried out and closed up; I'll get a pic of one today. I credit simple exposure more than soil amelioration with most results. Inadvisable imo to cover exposed areas with soil. Jules, are those assumptions based on science, or faith? I don't follow the logic.

Isn't that a wonderful feeling? It started to sink into my brain on the third reading. re your ?, Sinclair/Lyon say the fungal strategy is host-specific. But they are not as helpful as Schwarze re pathways.

Isn't that a wonderful feeling? It started to sink into my brain on the third reading. re your ?, Sinclair/Lyon say the fungal strategy is host-specific. But they are not as helpful as Schwarze re pathways.

No surprise that the girdlers are not resisting decay, as the tree is shedding them. The A. could even be considered a benefit by finishing off the girdlers. For backfill, is there any expanded aggregate available? Attached ppt was the best talk at ISA-europe this past May. Amazing adventitious root growth off the buttress, into a well-aerated environment. Slides ~50-60? Thanks as always for showing your fine work managing trees and fungi! Please pardon me to doubt this popular assumption: "a further reduction of the height of this lime, but that will **no doubt** have an effect on the creation and distribution of produced energy which *could* tip the balance of this trees ability to keep healthy and functional against the presence of Armillaria." . As noted by Peter del Tredici of Harvard University (Cambridge, MA), “Pruning rejuvenates by inducing the growth of younger meristems, shortening the internal transport path, and balancing shoot load and activity with limited root activity and support. In trees, physiological and developmental aging operate independently. They can be simultaneously embryonic and senile, resulting in a form of ecological immortality. It is this potential for immortality that makes trees so fascinating to work with.” Luigi pdf root regen english.pdf

Wood decay may be considered adverse, if excessive...that orange rib of response growth does bode well tho. Ugly black bumps those are!

Key words: particularly dangerous when wilting. Prunus serotina, the native of the US, can give cows a big bellyache if they eat witling leaves. O and ps it is deciduous; only P caroliniana is evergreen here. I once had a horse keel over after eating Acer rubrum leaves that were wilting. Vet had to pump stomach--quite a scene. The wife was not impressed with my arb work, letting the tree wilt and shed, increasing the nasty alkaloids.

I'll be washing me boots after the next trip to the UK; that one isn't recorded across the Atlantic. Striking documentation of a sinister saprotter.

t/R fell out of my toolbox; there wasn't room for it after incorporating this: Wessolly How hollow may a tree be.pdf

These from NE Europe so I figured you lot might know what's getting into this ash, F excelsior. Looks like Angry Birds to me!

Great--cut lengthwise and smooth the surface. Would love to see that!