Deodar tree folliage getting pale

ARWadoo

hello'
One 30year old deodar folliage is getting yelloish growth of the tree is poor .Same is the case with an abies pindrow tree of about 20 ft ht. Any remedies please, Other Deodars and Piceas are going on nicely
2) I am interested in columnar Apple trees how to get it any possibility.

Eric Frei

For starters

1. Pictures
2. Soil pH Test

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ARWadoo

hello EKKA:
The Cedrus deodara tree is about 30years old with Girth at BH OB 97cm.The tree top was damaged 3 years back and it could not develop a new leader.The soil can not be a factor as a few Deodars growing in closevacinity of this deodar are healthy.The branches are drooping and the foliage has turned yellow in the diseased one.
Photos are attached please.
ARWadoo

Attached Thumbnails

   

Eric Frei

Well, we need a better shot of the business end.

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TrevMcRev

Yep, need a photo that shows the whole area at the base of the tree.

Look a bit like that is all built over or something...not a mulched garden bed.

Other trees in the area might not have been disturbed/compromised in the same way.

ARWadoo

Hello EKKA

sending photos of the base and the surround f the illfated deodar.The tree seems to be loosing vitality.

ARWadoo

Attached Thumbnails

 

Eric Frei

Listen up.

It looks to be filled up, but I cannot tell what the surface is, I have no idea what the TPZ area is etc

All I can do is steer you to a few threads.

Read the draft standard in this post, it's a PDF attachment.

AS4970 Draft| Australian Development Tree Protection

Some other threads.

The Project Arborist| Australia|AS4970-2009

adding fill dirt around trees.

Soil Aeration Experiments| Grade Changes| Compaction| Decompaction

Did I kill my live oak tree??

I suspect the absorbing roots have been damaged.

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ARWadoo

Hello Eric
Thank u for th concern and help.I have calculated the TPZ &SRZ for the diseased Deodar tree.Ifeel the privacy of the tree ha sbeen partly invaded by concrete forest.The tree is loosing vigor fast.All its majestic deep green branches have tuned yellow and are now drooping.TPZ=3.70m and SRZ=2.18M
DBH(OB) 0.3087m and at base Dia (OB) =0.369.I feel it is difficult to revitalise the tree, Would u like to give some suggestion please.
Withregards
sincerely yours
ARWadoo

Eric Frei

For a real fast fix perhaps a mauget stem injections etc. Sometime drilling through the concrete and injecting beneath the slab with compost tea and mycorrhizae with a spear helps. Also compost tea and mycorrhizae all available surface area. Chunky mulch.

It's going to be a tough battle, do not fertilize though, you need to get the root system going and beneficial fungi and bacteria are the keys. Not sure about your weather but real cold doesn't (under say 15C) help neither does real hot (over say 30C) but you must try.

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metzler

couldnt of put it better ekka, you gotta start at supporting a healthy root system by establishing (or boosting) the symbiotic relationship of the fungi/roots, using mycorrhizal bacteria to inoculate the soil/duff. thats the first place to start, I would, like ekka said, apply it to the available surface area as well as spike it about 18" down and apply to roots directly, also the tree shouldnt have any veg competing for nutrients directly underneath the canopy, it could be a deficiency of some sort, but fertilization is not the key, also what is the extent of the mechanical/abiotic stress factors?, being close to the house, have there been any chemicals used recently? how recent/long has the root zone been suffocated by concrete? personally I would steer clear of tree injection systems, unless youve properly and accurately diagnosed the specific problem. find out whats causing the stress in the first place and you may be able approach the problem to save the tree, often times home owners will focus on the symptoms showing, try to look at all of the little clues and create a big picture, usually the stress goes on for a long time before the tree negatively responds.

Garry Brockley

Like metzler says the tree can be stressed for a long time before showing any big signs of a problem, i personally would say that the tree has reached its maximum growth.
looking at the evidence in the pictures i would say that the roots are being restricted and compacted i.e. the block paving, the sand and hardcore base have restricted water, food and microbe interactions which has led to the trees demise.
The other trees on the plot are still relatively small so are still able to cope with the restriction but as they get bigger i would say the same will happen to them too.
i would class these trees in the roadside tree catagory which gives them a maximum of twenty years total growth then replace.
just my 0.02cents

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