what are the benefits of a tree reduction?

[RobArb]

I don't get it why not just fell the Holly??? I suppose you can constantly moniter your trees though David.

 

 

 

How does the increase in light shock/kill the tree?

 

How does the tree react to prevent this when the amount of extra light is progressively introduced?

 

All interesting stuff.

 

I would presume the bark would suffer "sunburn", just like we would, causing the cambium later to suffer and die off eventually killing the tree, I know beech don't like sudden increase in sunlight.

 

I suppose if it was gradually introduced with this type of haloing, it would be a bit like slowly getting a tan over time, like us working outdoors, increasing the chances of survival

 

Thats my take on it anyway:biggrin:

 

Sent from Rob's GalaxySII

[showoffsummer]

A massive thank you for all your contributions! I have a lesson with the lecturer tomorrow so Ive just printed off this thread and tonight Im going to highlight all positive and negative points.

 

After reading the whole post I have learnt a lot about reductions which I never new and will look at them in a whole new light in the future!

 

thanks for all your help.

 

cheers ciaran glyde

[Mesterh]

 

I would presume the bark would suffer "sunburn", just like we would, causing the cambium later to suffer and die off eventually killing the tree, I know beech don't like sudden increase in sunlight.

 

I suppose if it was gradually introduced with this type of haloing, it would be a bit like slowly getting a tan over time, like us working outdoors, increasing the chances of survival

 

Thats my take on it anyway:biggrin:

 

Sent from Rob's GalaxySII

 

Thats what I sort of thought but was hoping to get a bit of science behind it.

 

If its correct then trees have thinner bark when necessary but can then thicken it if required.

 

Which would make sense but ive seen lord of the rings and trees seem to take an age to do anything.

 

 

Just wondering if any studies have been done etc.

[Fungus]

I would presume the bark would suffer "sunburn", just like we would, causing the cambium later to suffer and die off eventually killing the tree, I know beech don't like sudden increase in sunlight.

I suppose if it was gradually introduced with this type of haloing, it would be a bit like slowly getting a tan over time, like us working outdoors, increasing the chances of survival

 

Beeches don't "tan" or thicken their bark when suddenly exposed to sunlight.

Solitary beeches or lanes of older trees activate dormant buds at the 12 o'clock side of their trunk and bend down the new branches to bring shade to the bark (see photo 1), or "embrace" the trunk with branches from dormant buds at the opposite site (photo 2) if no or not enough dormants buds are present at the most sunny side to protect the bark from sunburn.

And younger free standing beeches surround the entire trunk with branches with dense foliage, that even stays on the branches in winter and is shed when the new leaves are formed, as is shown in the third picture.

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[David Humphries]

And younger free standing beeches surround the entire trunk with branches with dense foliage, that even stays on the branches in winter and is shed when the new leaves are formed, as is shown in the third picture.

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Is that holding on to leaves in dormancy (particularly in Beech) what I think I've heard as being refered to as "Marquesence" ?

 

Think I've also noted Hornbeam & Oak having this phenomenon.

 

.

[David Humphries]

Beeches don't "tan" or thicken their bark when suddenly exposed to sunlight.

Solitary beeches or lanes of older trees activate dormant buds at the 12 o'clock side of their trunk and bend down the new branches to bring shade to the bark (see photo 1), or "embrace" the trunk with branches from dormant buds at the opposite site (photo 2) if no or not enough dormants buds are present at the most sunny side to protect the bark from sunburn.

.

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Gerrit,

 

is this 'activation' of dormant buds purely a photosensitive reaction & stimulant, or would the increase in light generate the pressence of hormones such like the Auxins ?

 

 

Great photos by the way

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[Fungus]

Is that holding on to leaves in dormancy (particularly in Beech) what I think I've heard as being refered to as "Marquesence" ? Think I've also noted Hornbeam & Oak having this phenomenon.

 

I only know the term "marcescens", which means "wearing a skirt".

And yes, both Carpinus and Quercus sometimes hold on to a winter "skirt", especially when planted in hedges, with the most dense foliage at the side exposed to direct afternoon sunlight.

[sloth]

Marquesence is the term I know of too

[Fungus]

is this 'activation' of dormant buds purely a photosensitive reaction & stimulant, or would the increase in light generate the presence of hormones such like the Auxins ?

 

David,

I'm not sure, but I assume the (sudden) increase in light triggers redirection of the (stored) growing hormones, such as auxins, towards the dormant buds and then the branches grow towards the light source while "embracing" the trunk (photo 1) or are bent downwards to protect the bark of the lower parts of the trunk (photo 2).

In The Netherlands, the trunk of newly planted beeches or beeches suddenly exposed to light after other shade providing trees have failed or been felled, are covered with jute or burlap (photo 3).

Also see Overexposed beech with extreme sun scald.

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[RobArb]

I wonder then.....

 

Bit of a mad scientist thought here, shoot me down if I'm being thick!

 

As part of my ongoing theory and research into restoration pruning and different techniques on forcing dormant buys to shoot on scaffolded stems, would shining fake sunlight, UV?, (can you even do this) over a certain time initiate growth on some species?

 

 

???

 

Sent from Rob's GalaxySII