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Buddyboy


Latest posts by Buddyboy

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Shrivelling fuchsias

Posted: Today at 13:18

Hi C

Is that area you are talking about mushy

Plum tree - possible bacterial canker...

Posted: Today at 12:47

Hi Sharon

I think the union is split , the whole right side would need cut back to the trunk, and is there any sign of canker on the rest of it

The third photo is the canker on the back ot this tree we are talking

Plum tree - possible bacterial canker...

Posted: Today at 12:11

Hi Sharon

It does look like Bacterial canker on your second photo

Your first photo could you confirm if that is a split in the union of the tree on the right hand side

problems with pear tree

Posted: Today at 11:58

Flowerchild

This is the evidence you gave me this excerpt is from your link, and Iam talking about the Uk

Action

Risk assessment carried out for this pest on pear - further work needed to determine whether strains pathogenic to pear are in the UK and if not whether risk mitigation for those strains can be made.

General Comments

Potential pathogen of pears further work needed to determine whether strains pathogenic to pear are in the UK and if not whether risk mitigation for those strains can be made.

That is just confirming what I already said

The tree was girdled the bark was completely seperated from the trunk there was also a split in the tree, and it is common practice to cut back infected bark to good bark to aid healing

Your link on decay on trees I know already,

If you want to say anymore on the matter then Pm me

Pruning (or not) of newly planted Portugese Laurel

Posted: Today at 07:31

Hi Pete

I will make you aware Portugese Laurel is very susceptible to Silver Leaf disease if pruned between September and May, I will give you a link From the RHS and have a good read at it before you decide to prune

https://www.rhs.org.uk/advice/profile?PID=245

Which plants does Silver Leaf attack?

Silver Leaf attacks a range of fruit trees (most famously Victoria Plum) including plums, damson, cherry, peach, apricot, pear and apple. It can also infect trees such as Laburnum, ornamental cherries, poplars, laurel (especially Portugal Laurel) and roses.

 

Shrivelling fuchsias

Posted: Yesterday at 10:20

Hi Chickenlady

It could be Fuchsia root rot caused by overwatering and Pythium fungus like micro-organisms which cause `Damping Off` of the root system, its irreparable Iam afraid

water borne diseases

Posted: Yesterday at 09:03

Pansyface

water borne diseases

Posted: Yesterday at 07:33

Hi Iain

There is high possibility he is spreading infection

Phytophthora and Pythium can be spread by recycled water so if he is using a stick that is infected and sticking it in everybodies waterbutts he is going to spread Oomycete micro-organisms that will be present on that stick

Snake Mark Maple

Posted: 13/09/2014 at 08:09

Hi Ahmad

The leaves at top and centre, I take it thats just the autumn colour leaves of yellow and maroon and not brown

Splitting of bark can indicate that the tree has a disease, the tree does this as a defence mechanism but there could also be other factors

Verticillium Wilt can affect these trees, but there is no sign of any branch dieback, this does not mean it has not got it, it depends on the severity of the disease some trees can last for years and then finally succumb to the disease,

There is also a bacterial disease called Pseudomonas Syringae which causes the bark to split, this also in its severity can kill the tree and shows the same symptoms as Verticillium Wilt, these two diseases can also pair up on the same tree so the outcome will be the same.

Wounding  of any kind seems to play a major role in initiating disease development. Wounds may be mechanical or environmental such as frost injury. Wounds have been shown to predispose trees to bacterial canker, but you told me there is nothing weeping from those wounds

There is no agreement about the severity of diseases caused by Pseudomonas syringae. Most researchers consider Pseudomonas syringae a weak pathogen, an opportunist that capitalizes on a host weakened by some predisposing condition. A number of factors reportedly make plants more susceptible to infection; foremost is freeze damage. Freezing wounds the plant, allowing the bacterium to get into and destroy plant cells.

Ironically, many strains of P. syringae catalyze ice crystal formation on and in the plant tissues  These generally are referred to as ice nucleation-active (INA) bacteria. Their presence on the plant serves to raise the freezing temperature above that at which sensitive plant tissues would normally freeze.

At the moment I favour P.syringae because of the length of time those wounds appeared and they look as if they have healed over, the positive side is snake bark maple tree is a good healer of bark wounds

I suggest you purchase Bordeaux copper spray, and spray any new wounds during autumn and winter. This may or may not help but it is worth a try, you will have to keep a look out wait to see for any dieback in branches when the new foilage appears in the spring

So at the moment I would take your family`s advice and leave the tree standing and fingers crossed it will be ok

 

 

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