Bleeding canker English walnut

[Ben Ballard]

Thanckyou for the usefull information:001_smile: when get the go ahead to fell will either grub out the stump or grind depending what the owner wants,and replace with a black walnut near by as just been reading it could be imnume to armillaria

[Tony Croft aka hamadryad]

Thanckyou for the usefull information:001_smile: when get the go ahead to fell will either grub out the stump or grind depending what the owner wants,and replace with a black walnut near by as just been reading it could be imnume to armillaria

 

Immune to armillaria?

[Ben Ballard]

just had a look in the diagnosis of ill-health in tree R.G.Strouts

says acer negudo,juglans hindsii,juglans nigra and taxus baccata are highly resistant if not immune

[Fungus]

just had a look in the diagnosis of ill-health in tree R.G.Strouts says acer negudo, juglans hindsii, juglans nigra and taxus baccata are highly resistant if not immune

 

Ben,

Which is completely opposite to my experiences with (rhizomorphs of) Armillaria mellea and/or A. ostoyae and the above mentioned tree species associated with endomycorrhizal microfungi, which because of this have poorly developed defense possibilities of their root systems, on the Western European continent.

Edited August 21, 2011 by Fungus

[Ben Ballard]

cheers gerrit good to have your view on it from what you seen in the field. i guess the book a bit out of date then:lol:

[treeseer]

Ben, Haley and Haley seem to have found Ectomycorrhizae on walnut and maple in England:Ectomycorrhizal Fungi re walnut, better hope that Thousand Cankers Disease does not cross the ocean!

 

Yes, ectos can be valuable players in tree protection--defensive ends for the Roottip Ramblers, in an American football analogy--but the ability of a pathogen, like the suspected Armillaria in your site, to have its way with any host seems to rely on other factors as well:

 

Vigor and vitality of host

 

Vigor and vitality and amount of pathogen. This could rely in part on

 

Presence of antagonists to the pathogen

 

re this, Pisolithus tinctorius has been identified as a pioneer symbiont, capable of combining with tree roots in highly acid soil, which seems to attest to its power and versatility. But plant succession is not an immutably fixed pattern; plants do not follow in lockstep, but can be introduced elsewhere in the progression. Pisolithus also grows well in established landscapes in NA, so it may also do well in landscapes such as yours, as may other mycorrhizal associates.

 

If a highly active concentration of Armillaria is suspected based on viewing an image, how can it be confirmed?

 

If it is indeed confirmed, then what can be done to prepare the site for successful establishment of trees?

 

Could planting associated woody plants displace some of that (*&^*&$%*&Y turfgrass, and favorably alter the soil biology via allelopathy or other means?

 

Could grinding out coarse woody stumps and roots and inoculating with fungal antagonists make it safer to plant new trees?

 

What else could be done?

[Tony Croft aka hamadryad]

Ben, Haley and Haley seem to have found Ectomycorrhizae on walnut and maple in England:Ectomycorrhizal Fungi re walnut, better hope that Thousand Cankers Disease does not cross the ocean!

 

Yes, ectos can be valuable players in tree protection--defensive ends for the Roottip Ramblers, in an American football analogy--but the ability of a pathogen, like the suspected Armillaria in your site, to have its way with any host seems to rely on other factors as well:

 

Vigor and vitality of host

 

Vigor and vitality and amount of pathogen. This could rely in part on

 

Presence of antagonists to the pathogen

 

re this, Pisolithus tinctorius has been identified as a pioneer symbiont, capable of combining with tree roots in highly acid soil, which seems to attest to its power and versatility. But plant succession is not an immutably fixed pattern; plants do not follow in lockstep, but can be introduced elsewhere in the progression. Pisolithus also grows well in established landscapes in NA, so it may also do well in landscapes such as yours, as may other mycorrhizal associates.

 

If a highly active concentration of Armillaria is suspected based on viewing an image, how can it be confirmed?

 

If it is indeed confirmed, then what can be done to prepare the site for successful establishment of trees?

 

Could planting associated woody plants displace some of that (*&^*&$%*&Y turfgrass, and favorably alter the soil biology via allelopathy or other means?

 

Could grinding out coarse woody stumps and roots and inoculating with fungal antagonists make it safer to plant new trees?

 

What else could be done?

 

Armillaria is part of the system, it thrives when the system is broken, fix the system and it becomes impotent.

[Ben Ballard]

thancks for the good advice its been realy helpfull thread:001_smile:

[treeseer]

Armillaria is part of the system, it thrives when the system is broken, fix the system and it becomes impotent.

 

sounds like we agree, if introducing more biodiversity by replacing grass with natural associates to trees is part of fixing the system, then voila!

 

Anything else?

 

Too bad that is much harder work than breaking the system, which was evidently done by clearing trees and sowing grass seed. Ben, do you know what was on that site 10-50-100 years ago?

[Fungus]

1. Haley and Haley seem to have found Ectomycorrhizae on walnut and maple in England:Ectomycorrhizal Fungi.

2. Pisolithus tinctorius has been identified as a pioneer symbiont, capable of combining with tree roots in highly acid soil, which seems to attest to its power and versatility. But plant succession is not an immutably fixed pattern; plants do not follow in lockstep, but can be introduced elsewhere in the progression. Pisolithus also grows well in established landscapes in NA, so it may also do well in landscapes such as yours, as may other mycorrhizal associates.

3. Could planting associated woody plants displace some of that grass, and favorably alter the soil biology via allelopathy or other means?

4. Could grinding out coarse woody stumps and roots and inoculating with fungal antagonists make it safer to plant new trees?

5. What else could be done?

 

1. I already reacted on this poorly documented "research", of which the suggested outcomes have not been aknowledged, nor confirmed by the international mycological society with this answer to David's before asked question and have posted this short list of tree species associated with endo- and/or ectomycorrhizal micro- and macrofungi at his request.

2. Quote : "plant succession is not an immutably fixed pattern; plants do not follow in lock step, but can be introduced - through interference of forest "managers" - elswhere in the progression", but not as "adolescent", half grown or old trees by themselves, that is as long as they don't develop legs and feet or wings to relocate with, thus breaking the "laws" of natural succession in forests and other habitats.

And why is a species with FB's with such distinct and easy recognizable features as P. arhizus listed as very rare and only associated with highly acid soils all over Europe ?

3. Apart from "turfgrass", grass is part of all natural ecosystems and food chains, without grasses none of the "grazing" animals could survive and all predators of these animals would die, disrupting the entire food chain and turning our world into chaos.

And tree species such as Castanea and Acer associated with endomycorrhizal microfungi, already have developed strategies to keep grasses highly competitive for endomycorrhizae off their tree species specific ecosystem territories.

4. Not as long as we keep uprooting trees grown under artificial conditions in "nurseries" and replant them with damaged roots and mycorrhizae in hostile environments. Your view on "managing" trees and forests seems to be more associated with short term focussed "gardening" of "nature" by and with all means and at high as possible speed, then with arboriculture based on knowledge of the dynamics of natural tree species specific ecosystems, their soil food webs, including mycorrhizae, and the tree species specific life cycles and on what mankind does to make their lifes miserable and cause an early death.

5. You could start with reacting to my earlier post by aswering my before asked questions and make that a consistent aspect of your "psychology".

Edited August 22, 2011 by Fungus