alliaria
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Everything posted by alliaria
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Tree assessment/forest pathology
alliaria replied to Tony Croft aka hamadryad's topic in Fungi Pictures
Hi All, Would an area of flat bark extending up approx 3m. on a Acer platanoides indicate poss. Armillarria sp. infection? No signs of rhizomorphs or mycelium,but some exudate and scaffold branch death on the same side. Perenniphora on other side but no scaffold /canopy dieback? -
More shrubs than trees, but can anyone help?
alliaria replied to Rock Monkey's topic in Tree Identification pictures
Second one could be a coppiced Gleditsia, any spines? -
Hi Paul, Yeah I thought about that, will it be causal or secondary? Dunno. Cheers.
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Hi Sean, Youy were in the background when Win was on the phone. Massaria, I may be wrong but there are no tree deaths associated with it in London, Salt damage, not with the rooting zone to the side, salt damage and phytophthora attack due to soil colloid damage, possible. Ceratocystis seems to be closest, tree death, lens shaped lesions, numerous mites on dead twigs attracted by exudate from ascospores. Have contacted Forest Researcg, we,ll see what they say. Cheers
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Hi, Has anyone any insight into ceratocystis fimbriata f.sp. platani. This seems to fit but without obvious stem lesions. Root contact and sporular invasion of fresh wounds leading to death in 4-7 years. Cheers
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Hi, The path was probably heavily treated, but the roots probably preferentially spread in the other direction, canopy spread of 15m. or so.
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I,ll post them tomorrow
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Is this happening anywhere else, sudden death of mature planes won,t go unnoticed, they consist of something like 35% of our urban tree stock in bristol, doesn,t bear thinking about.
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Hi Hama, In my experience, and i,ts only just reached us, massaria causes localised branch damage with lesions on the upper side. This is catastrophic, standing dead trees, very reminiscent of dutch elm, horizontal cracks in the trunk, a bit like greenwood drying out.
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Hi, Anyone seen the sudden deterioration and death of mature plane trees? There is an avenue in Bristol of mature planes, Platanus sp. That have about 8 standing dead trees and others with substantial dieback and poor canopy cover. The bark is peeling off and there are some signs of staining . There are no exil holes, larvae tunnels or fruiting bodies. These are about 90 to 100 years old and comprise of different clones, ie some fat, some smooth, etc. about 40-70 diameter at 1.3m. This is rapid possibly over winter? Any ideas? I.ll post some pics. but they don.t really tell you anything. Cheers.
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Long shot but Clrodendron trichomotum, does it stink and have white fragrant flowers and really weird purple and blue fruits?... thought not, I,m off.
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:biggrin:Cheers Gerrit, You are a wonderful addition to this fine website.
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Ah. So does that go for all diffuse porous trees?
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Hi Gerritt, I,m probably barking up the wrong proverbial tree here, but I thought a tomograph would show :confused1:up white rot because the preferential delignification at an early stage would be detected, unlike say Kretschmaria degrading cellulose. Is it because they are diffuse porous?
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Hi, I had a tomogragh done last year, but this only showed some decay consistent with the flattish dysfunctional bark, last pic, which is on the opposite side to thefruiting bodies. This of course would not show root or decay below the buttress. The die-back in the crown seems to be associated with this dysfunctional bark. Also some signs of exudate on this side. Makes me wonderwhether some Armillaria is in there too, although no signs of rhizomorphs. Busy road as a target too. Pulling test? Cheers
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Some pics.
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Oops my mistake Acer platanoides.
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Hi fungi guys, anybody seen this beastie, perenniporia, on sycamore? Significance for tree? Cheers.
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Cheers Rob. Things have moved on, I did an M.Hort. years ago, mostly horticulture, at Pershore and of al the botany stuff, Lowsons Botany was the bible, outdated now? Soils has always been dodgy, but I think I,ll buy up by roots and take it from there. Congrats again.
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Hi Rob, In the first year syllabus there is a lot of soils and plant biology, which books did you find most useful. Cheers.
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Well done, starting my first year in September.
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3 day professional tree inspector course
alliaria replied to thomas_3rd's topic in Training & education
I think most professional Tree Inspectors will be aware of the differences in pathogenicity of ganoderma sp. and other fungi, Inonotus sp. and the differing susceptibility of various hosts, and strive for accurate identification. -
Hi Matty, Is that the hornet clearwing moth? No signs of exit holes on these. Cheers
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Was it something I said?
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Hi , Apologies if this has already been covered, but in the Bristol area many Lombardies are showing signs of partial or severe dieback in the canopy. This has been going on for a number of years. Strouts mentions something called unexplained dieback of Lombardies. My own forays have come up with Cryptodaiporthe populae (discosporium in another stage) but I have not seen raised pustules on fallen twigs, pycnidia? although many show signs of cladoptosis.. It has got so severe that the worst affected are being removed. Any ideas. Cheers.
