David Humphries
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Everything posted by David Humphries
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Felt this also Q28 doesn't appear to give a correct option set for the question posed. completed though. .
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Shouldn't really be a problem as they're indigenous with their associated predators keeping their mortality level in check. (where as Cameraria doesn't have the same level of associated predation (yet) I imagine that as long as the infestations are not as bad as this year each year, then it shouldn't have an major effect on the host vitality (by itself) too much. .
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Haven't come across the emergent adult weevil before but here's what it looks like..... picture taken from Claude Schott's website Entomologie en Alsace .
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The grub lives, feeds & deposits between the upper & lower leaf surface & is approximately 5-7mm in length. The round galls to the left of the weevil grub in the last shot are not associated but probably small oak pea galls of the gall wasp Cynips divisa .
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Here's what we believe is oak leaf miner, called Rhynchaenus quercus Unlike the Chestnut leaf miner (Cameraria ohridellha) its not a moth but a weevil. Not sure I've noticed such a heavy infestation on our oaks here in London before, perhaps a milder winter? Any one else noticing this on oaks around the country? .
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Not that we were aware of. Having said that, red banded needle blight is not something we're specifically looking out for in London at this time. Pine Proccessionary moth (Although not here yet) is something we are keeping an eye out for .
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What's this probably you speak of !?! Don't you know that I'm 'always' right .
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that's absolutely preposterous, you'd never get Ganoderma pfeifferi on a conifer stump Awesome, wish I had one of those in my garden .
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Cheers fellas we try and keep in the habit of having a second line in place (as long as it doesn't hinder rigging etc....) even if there's no real particular hazard associated with the works. Habit & repetition often promotes good work practice No great need to have moved the Landy as the hanger had been in place since last October 27th. Wasn't really going anywhere. Although when we told one of the parks maintenance guys who regulary cuts the grass along these trees, he didn't have a clue it was up there above him. Think he's gonna look up a little more often now .
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quick job this morning clearing one of our last hangers from the St Jude storm .
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No worries, not really interested in Guys pesentation (though no doubt it would have been most interesting ) Going to an LTOA day tomorrow where were looking at identifying symptoms of CP was just interested in how high up the agenda it was interms of future (short term) threats .
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Hello Paul sounds like a good event out of interest, how much air time did Ceratocystis plantani get? thanks David .
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I think they should have kept it at Capel Manor like they originally intended. Better access for a lot more people and would of helped rekindle the celebration of trees event. .
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We looked into whether we could have copies of both standards on annual license here at Arbtalk (perhaps paid for by a modest membership contributution) But BSI were not too keen on the idea .
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Enjoyed the 'working mans blues' a lot, like your style August .
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each week they seem to shed a skin and get a little bit bigger great set of Gano's . -
Interesting read (well, quick scan through) Jon, surprised that Trichoderma was being studied as a bio antagonist way back in the seventies. Had thought the more recent studies on the species were relatively novel. Guess this wheel just keeps on turning. .
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Nice leg stretch in amongst the wild garlic, orchids & blue bells at the 800 year old continuous coppice system at Bradfield Woods just south of Bury St Edmund's. .
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I only see debate from people with different experiences. Bracing seldom gets discussed here, other members will have picked up new things reading along. As long as it stays cordial, I don't see a need to close the thread .
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Oh I don't know steel encased in reaction wood in old trees probably makes them bomb proof .
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Drying out as in 'cauterising' yes? Have you documented an infection to arrest completely after only one treatment of heat ? .
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Have you not bent your engineering will to the development of such a system as yet, come on man, we're waiting .
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Yep, I get that But no room for a 'little natural movement' in static installations. Movement encourages adaptive strengthening wood, no ? .
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Jomoco, have you at some point been tied up with dynamic hollow rope bracing and left dangling up in tree by any chance? I've followed most of your anti rope cabling posts and am intrigued by your negativity. Do you not see any situations where that type is beneficial as opposed to wire ? Did you ever catch our thread on using the system as tethers on an old habitat tree? http://arbtalk.co.uk/forum/video-forum/67516-bracing-tree-its-habitat-value.html Like Ali's advice in the first reply, btw .
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Just turned them for you Yes it is Polyporus squamosus .
