Amount of Dead Ash

[Bren.]

From my understanding (Continental experience) there are no Ash trees 'resistant' to Chalara, as they will all become infected and show some symptoms of dieback. There will be differing levels of tolerance, some individuals having almost none and some having very high levels but this is different to being resistant.

 

In comparison to Elm, say where there is a healthy mature specimen growing in an area where DED is active, there is a good Beetle population and it is adjacent to dead and dying infected Elms - all which have been the case for a lengthy period - would strongly suggest that it is resistant, as there is no way that Beetles will not have fed on it.

I'm not sure what you are saying here, from a biological point of view, tolerance is usually applied to environmental factor, not pathogens. Resistance would imply that a organism can contract a disease, but recovers, and immunity means just that, it will not contract a disease.

From an evolutionary point of view, resistance is the best hope hope for continuing to see Ash trees in our landscape in years to come, but too many people are ready to cut one down as soon as they think they see symptoms.

[Gardenmac]

No worries man, not here to cause stress to anyone as the world is already too full of the haters. Enjoy what's left of the weekend.

[Billhook]

Something is not right with half the Ash trees on the farm here in Lincolnshire.

Whether it is the season or disease, many look to have only half a normal leaf canopy, which makes the keys very visible since they have not dropped, which again gives the appearance of a sick tree.

It is most obvious when you see a healthy tree alongside a poor one, so it points much more to disease though I have not identified Chalara

 

There is a lot of lichen forming on the branches of the poor Ash and a previously very healthy Walnut in parkland (planted in 1871) suddenly last year became covered in lichen and only has a few tiny leaves today (June 2nd)

 

The Chestnuts had an attack of leaf miner but that has not shown recently.

 

An large Oak again in the park is half dead with Stag's head.

 

The Elms that the farm had in abundance fifty years ago are still there in massive numbers mainly in the hedgerows, no mature trees and at about fifteen years they succumb to the DED but they are waiting for the day when the beetle or disease mutate or die out so let us hope that this will be the case with the Ash.

 

Perhaps these diseases happen again and again over centuries and outside our timescale, a species is dominant, becomes wiped out except for a reserve of smaller trees and another takes over.

[Tony Croft aka hamadryad]

this is the last Chalara talk im getting involved in on here!

[18 stoner]

this is the last Chalara talk im getting involved in on here!

 

 

Would you like to elaborate or is this just a random statement that's supposed to remind us how awesome you really are?

Edited June 2, 2014 by 18 stoner

[MattyF]

Examined quite a few shoots on late barely opening ash today and there's plenty of ash moth on all the trees we looked at that appeared stressed and opening late.

Also did a climbing inspection on a dead ash in a school last Friday that had been killed by root rot and no evidence of chalara, looking at trees in similar situations on the way back it becomes apparent there is a lot of waterlogged soil about that can not be helping.

 

 

 

 

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