Re: Gumming of Almonds


-----Oorspronkelijk bericht-----
Van: Tony & Moira Ryan <theryans@xtra.co.nz>
Aan: Mediterannean Plants List <medit-plants@ucdavis.edu>
Datum: woensdag 10 november 1999 3:38
Onderwerp: Re: Gumming of Almonds

Moira
The gum is  clear, so I am lucky. I will put some compost around the trees
and will cut off the worst branches
Wim

>"M. & L. Doster" wrote:
>>
>> Here is my experience concerning gumming of almonds:
>>
>> Almond trees gum readily. It's something very common.
>>
>> If the gum is clear, than it's not due to a pathogen (microorganism).
>>
>> But if it's yellow-brown, then the gumming is due to a canker caused by a
>> fungus (or bacterium). If the canker is on the trunk, then you can be in
>> trouble; whereas, if it's on a small branch, it's not so serious.
>>
>> If the gum is very sticky, then it is recent. Sometimes people don't
notice
>> the gumming until quite a few months afterwards.
>
>I have been unable to find any reference to gummosis due to a fungus,
>but an infectious gummosis can occur on stone fruit trees as a result of
>bacterial attack. This results in marked cankers and leads to death of
>adjacent tree parts, but is unlikely to be a killer unless it reaches
>the main trunk. It is also usually accompanied by spotting of the
>leaves.
>
>If your gummosis is clear, as Mark describes, and there is no sign of a
>canker or dying branches, it is most likely stress related and improving
>growing conditions by such measures as applying a layer compost over the
>root zone plus a good pad of mulch on top might help the tree to
>recover. Improving the upper root system will help if there is
>compaction and lack of air and the compost and mulch will gradually also
>lighten the underlying soil (this works best if the compost is laid on
>the surface and not dug in). At the same time mulch will help to keep
>the root area moist if you get a dry summer next year.
>
>Always take care, however, in mulching around trees to keep the mulch
>away from contact with the trunk, as this can lead to collar rot.
>
>Moira
>--
>Tony & Moira Ryan <theryans@xtra.co.nz>
>Wainuiomata,
>New Zealand (astride the "Ring of Fire" in the SW Pacific).
>
>
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