William

I don't think there is a great market for their use in the UK and as such not many stockists (as far as I know). I used the Arborjet system a couple of years ago and had to purchase the plugs direct from the USA.

Other than removing the above ground part of an infected plant (leaving below ground infected roots) - and creating inoculated aerosols through chipping (against FC guidance) how is it excellent on p.ramorum sites, as infected material is not completely removed?

Thats great, thanks.

Hi all I use my own car for work – and receive £0.34 per mile from my employer for this. My question is – given the costs to maintain, tax, insure and fuel a car these days does this amount seem reasonable and does anyone know of a calculation/recommendation on how much it does cost to run a car for company use (including depreciation)? Many thanks.

It's got to be poplar for me - all of them, but Lombardy in particular!

Two kilos of useable diesel for the price of one... result!

This reminds me of those experiments I did at school when you mixed vegetable oil and water to find that oil does not mix well with water but floats on the top - easy to separate.

Hi Ian, I would like to hear the full explanation about this. My first thought is how this root would produce more roots than had already been severed. It seems that much of the cambium is damaged and it will require the use of valuable energy reserves to compartmentalize whilst producing new root growth? For what reason is the pruning undertaken? Cheers Will

Thanks for replies - I've attached a couple more photos that may help? Cheers

Hi all, Does anyone have a suggestion as to what this fungus is please? Looking through Lonsdale it could be early Kretzschmaria duesta (Ustulina duesta) - but hopefully someone can tell me otherwise. Its on crack willow at 2m. Many thanks.

I always thought that hacking off branches increased a trees ‘biological requirements’ as it forces the tree into producing new growth? Also, wouldn’t an early mature tree that is putting on lots of new growth have more biological requirements than a mature tree. And also, don’t trees transpire many hundreds of gallons of water per day in the summer – how long would it take to re-hydrate the ground between your tree and foundations using a hose to compensate?

Found one on quick Google Scholar search. http://www.fungi4schools.org/Reprints/Mycologist_articles/Post-16/Foods/V17pp120-121monkey-head_fungus.pdf

Have you had a look through Trees in Towns II (Research for amentiy trees No.9) by Britt & Johnston? There's a lot of info in there you could look at on tree officers.

It’s a complicated one and I personally don’t know how it spreads, but where it is suspected DEFRA/FERA are concerned enough to impose statutory restrictions on movement and processing of infected wood – on this point I’m not sure if it is legal requirement for arbs to report suspected cases to FERA though?

Hi Hama I agree that it’s a daunting task but in my opinion if we sit back and let genetics take its course our whole tree care philosophy crumbles. If we decide not to intervene how can we argue a convincing case to save the next diseased tree we come across? I'm sure you'd agree that we can all do our bit to help, from proper disposal and recording of infected wood to sourcing reputable (uninfected) planting stock. Cheers:001_smile:

At the moment we don’t use tree software for data capture, but we are looking to purchase a Trimble Juno with ArcPad for field use. From here we’ve thought about downloading the tree position and attributes as a .shp file to ArcView (which we have & use) and from ArcView export into both AutoCAD as a DXF file for plans and into Excel for tree schedules. I’m no expert and am on a steep learning curve with all this but our IT man tells me that he can produce elliptical NESW crown spreads and circular RPAs in AutoCAD this way. Any comments on the feasibility of this method would be very welcome at this point (before any money is spent:laugh1:). Cheers

Hi Paul Arboriculture & Urban Forestry and many other journals with articles relevant to our profession allow searches for articles, in fact Arboriculture & Urban Forestry allow free viewing of articles a couple of years old. This is a great source of free info and I think that the AA’s Arboricultural Journal would benefit from a similar method (i.e. free to everyone but only members having access to recent articles?). I know the old AA website had abstracts but these have now gone. As far as I’m aware the only way to find an Arb Journal article on the web is by knowing the article title first (no way to search keyword, subject, author etc. like on other journal websites), I can’t even find abstracts from the Arb Journal – only a title on British Library Direct. I'm sure they must be out there somewhere but they are hard for me to find. Are there any plans to make available online the many great papers that have been published in past Arb Journals, which could benefit everyone?

Personally I couldn’t do without Reaching for the Sun by John King – an easy to read popular science book without the technical blurb:thumbup1:. Professionally I don’t think any arb library could do without Cutler & Richardson’s Tree Roots and Buildings. Finances permitting I would also invest in: Biology – Campbell, Reece & Mitchell Physiology of Woody Plants – Kozlowski & Pallardy Plant Pathology – Agrios Modern Arboriculture – Shigo

Tony, Have you tried Paul Elcoat? Business development & liability control for companies wishing to achieve their potential by Elcoat Ltd Cheers

T A Villiers Dormancy and the survival of plants (Studies in biology series) - old but good and availale for a reasonable 1p on Amazon.

Oliver Rackham - quality. Do me a favour and ask him if he fancies coming to Bolton. I can arrange warm Vimto and Carrs pasties! I saw a one day lecture advertised a year or two back where he took a handful of people out for a talk around a wood. I wanted to go but the c£400 fee put me off. Enjoy.

After a quick web search I guess Agaricus bisporus..?

Me too, sorry. Seriously though, great comp Hama, will keep my camera with me now.

I would find it useful when checking a highway tree involved in subsidence. I would need north east south west for a development survey. Sounds like progress and potentially useful in some situations - do you have any in mind?

You could try searching the ISA Arb & Uran Forestry Journal - you can look through articles over a year old and also search for key words Arboriculture & Urban Forestry Online. You could also try Urban Forestry & Urban Greening at ScienceDirect - Urban Forestry & Urban Greening, Volume 9, Issue 3, Pages 169-272 (2010). If you've already looked through these journals and not found anything of interest you may want to be more specific - ie instead of searching 'urban shopping areas' search for articles containing words such as 'roots', 'pollution' or 'planting' etc. And try Google Scholar too. A good starting point in this topic would be Bradshaw's Trees in the Urban Landscape: Principles and Practice. Cheers