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daltontrees

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  1. Quoting directly from "Diagnosis of ill-health in trees' by Strouts (1994) - "Fraxinus excelsior suffers from a condition, not fully explained, called Ash dieback. It has not been clearly characterized but involves the death of scattered twigs, branches or limbs.Even severely affected trees sometimes slowly recover." A pessimism in the industry about Chalara is sweeping the country possibly faster than Chalara itself. But if you stop and look at an ash closely in some areas you may find no wilted leaf, no diamond shaped lesions, no fruiting bodies on last year's fallen petioles, no specific discoloration under the bark, in fact no evidence of Chalara whatsoever. I recommend people stop and actually look instead of assuming from a general impression of tattiness. As Shigo used to say "Touch Trees".
  2. Long before Chalara was known of, Ash Dieback was a thing. Abiotic. General decline for reasons not fully understood. The ash I have been seeing look awful but have no symptoms that can only be Chalara. How, for example, is it possible for Chalara to cause a well-set bud from a previous year on a good sturdy twig to fail to develop at all?
  3. I zoomed right in, there's no sign of axillary buds, and the 'twig' is much too uniform to be anything other than the petiole and midrib of a pinnate leaf. Plus, I can't think of one simple leaf species that has no leaf petiole. I'd say this is definitely a pinnate leaf form. Just don't know what species.
  4. If I could have only one book to keep and know it would be "Trees: Their Natural History" by Peter Thomas.
  5. I hope so. I estimate that lot of books to buy would be around £3,500. If you can even get them.
  6. Aroun Glasgow there is a fair bit of this. Alos I watched pigeons sitting at the top of my neighbourign ash trees as they came into leaf ripping the young leaves off. Plus it was so dry some of the buds didn't even open this year. Public and clients are assuming it's Chalara, but I'm not seeing many symptoms of Chalara, just lots of awful looking ash.
  7. Put "good books" in the search box.
  8. Sorry, I have only just seen your post. Yes I have the Pro. I don't pay for the PT Mapper support, on the basis that they're not there to help at 8 at night or 7 in the morning when I'm often doing battle with CAD plans. It means I've had to learn to solve problems miyself (the hard way) and now I have a reallly good understanding of how PTM works. I had an issue with Pear early on when I found 3 fairly major things in the user manual that were wrong and the ordinary functionality couldn't be used without paying for support (which is wrong-in-principle for any product) or figuring it out myself. In this way I have discovered things I can do with PTM that PTM says you can't do or doesn't even metion that you can. I think I have run it to its very limit. There are times I really hate PTM and other times I love it, the best for me is the close integration of the survey writer, Pocket GIS and the mapping system. Things that really annoy me are that if you're using raster mapping you have to convert them to bitmaps (it won't take jpegs, tifs or pngs or pdfs) and if using vector mapping it has to be dxf (it will not take dwgs). I had to buy a programme just to convert dwgs. Ultimately, if I hadn't had previous experience using AutoCAD I would have given up on PTM or would have had to accept regular delays in my workflow while I got Pear to fix the same problems over and over again. Without a dwg to dxf converter, I would not be able to ge tthrough an average week with an average architect/topo surveyor plan. It's a serious limitation. I'd recommend getting QCAD, cheap and versatile, if slow.
  9. Nice one, I never would have got that.
  10. I trust you concluded that 'Recommendations' must be tagged on to the end of the title because that's the name of the Standard? One wouldn't for example call it 'BS 5837:2012 Trees in relation to design and construction - Recommendations' on a job that didn't involve demolition? I hadn't known there was a BS0. I just skimmed through it and it is genuinely interesting. Rather disappointingly, 'recommendation; isn't defined in it. It does explain codes of practice - A code of practice contains recommendations and supporting guidance,where the recommendations relevant to a given user have to be met in order to support a claim of compliance. Users may also justify substitution of any of the recommendations in a code of practice with practices of equivalent or better outcome. Depending on the context and field of application, a code of practice usually reflects current good practice as employed by competent and conscientious practitioners.
  11. Even better, excise the infected parts, ringbark or remove the whole tree right away or it will become a breeder and aid a local outbreak of DED. Or is this an area where there is no attempt made to protect elms?
  12. What's the situation? Public visibility? Shading issues?

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