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treeseer

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Everything posted by treeseer

  1. Has anyone taken this 3-day course? Or the 1-day survey course? https://www.lantra.co.uk/awards/prod...ion-ita-course
  2. Has anyone taken this 3-day course? Or the 1-day survey course? https://www.lantra.co.uk/awards/product/lantra-awards-technical-award-professional-tree-inspection-ita-course
  3. Who 'deemed dangerous' those solid assets? And where would the money for those big removals be coming from? Often when a government has money left in its budget, a quick and easy(or so they thought) cause is found, and a wild opinion is solicited to support it. Perhaps opinions from stakeholders like motorists and ecologists and taxpayer groups could also be solicited.
  4. Research by Fini and Ferrini (honest!) back up the practice of transfusing microbes from healthy trees. But to be fair I think packaged products have come a long way since a survey was done.
  5. Find a healthy tree of the same species. Harvest topsoil with active fine root growth. Take it to the sick tree and stuff it in holes in the soil.
  6. Overextension is always a big factor, sometimes primary. In the pics here, tree #1 seems to have had a lot of decay from prior damage, and #2 was a codom failure. Neither SBD, strictly speaking.
  7. No shorter term I know of; common in maple, these would be culls if found in a nursery that's professional and ethical.
  8. Prod and hammer? Cleaning comes first, then trimming dead bark.
  9. "Welcome to Arbtalk, the forum that rarely softens the blow..." Kind of like the world... To experiment i wonder about replacing the soil below the diseased areas, cleaning and cauterizing the lesions, and drenching with phosphorous acid.
  10. Removing damaged tissue; pruning. If surgery connotes invasion, it's not surgery. It looks like there could be more pluses than minuses in trying a little.
  11. Great observations by Cassian, who is now back in jolly Old! That grafting and occlusion can be trained by scraping the included bark out of forks. Occlusion and fork strength auf slater.pdf Slater - The Failure of Forks.pdf
  12. Reading his study (with Ennos), they found that forks with included bark that also had a little occlusion were a lot stronger. Hence the impetus to try carving out the bark to train it to occlude (form a branch bark ridge). See the first column: Response Growth after Pruning Compartmentalization Rules!.pdf
  13. Slater's studied the strength in bark occlusions in forks that have included bark. Has anyone tried training bark occlusion, by carving out included bark?
  14. This white mycelial fan was found 15'+ above ground on a steeply declining white oak. It smells like fresh mushrooms. Could it be anything but Armillaria? No signs were found at the base, but the search was not extensive.
  15. Have the beetles found to be a cause or a vector? I did not see that in the FS writeup.
  16. AOD seems to be an acronym in search of a disease agent. The treatments for both AOD and SOD are the same.
  17. Wow that's really hard reduction. It's so simple to spec a limit on cut size, like 10 cm. But the proof of the pudding will be in the tree's response. Thanks for keeping an eye on this one.
  18. Wolter, your pictures show trees with turf to the trunks, and the flares covered. Stem tissue is in the flare down to the root collar, where roots separate. So there is Positively a soil-trunk connection. Glad to hear that the soil drains well, but its presence on stem tissue is still a problem. jomoco is recommending the same trunk drench material that I was. Standard practice is to clear the dirt off the flare before drenching.
  19. Same here; on more species and not just in drainage-challenged areas but here and there. I may be wrong but I am guessing that since it is a soilborne disease (whatever the species), then it can only help to break the soil-stem connection by getting the dirt off the trunk, and replacing the soil >15 cm away from the flare. Both P and A travel in water, so drying the flare seems logical to try, along with phosphorous acid, which is registered for use. We've had good results in several individuals, but no huge databank of results, and with no replication or controls, there it is! I saw a few trees in Vonderland and other parks in Amsterdam that had bleeding lesions, but no epidemic or anything.
  20. Context here http://www.historictreecare.com/wp-content/uploads/2012/05/DD-LLL-1406.pdf
  21. Looks to be a soilborne disease; Phytophthora or some other organism. When the stem is covered with soil and wounded by turf equipment, soilborne organisms enter the tree. Not good, but treatable. ...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 a structural concern, because we already know that interior decay is near the surface. 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.’” To that I might add, replace the soil against the stem with permeable aggregate, and cover with rosaceous mulch, per research from the UK.
  22. Yes it's visible at the base in the pic, not unexpected. The question is the potential for the lateral spread of the decay. CODIT happens, even with K.d. Assessing suspected faults is half the job; inspecting signs of strength is equally important.
  23. I often see K.d. pop out after amputation. But other times it pops out seemingly on its own.

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