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Posted by The Old Bloke on January 2, 2007, 1:04 am
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>
>> My eureka lemon tree recently quickly died. When I cut it down I found
> that
>> an axial borer had drilled out the centre of the wood. The borer had got
>> right down into the stump.
>> I quickly disposed of the cuttings but now it is in three Murraya bushes.
>>
>> I have not seen the borer. The wood shows no entry point that I can find.
>> There is no saw dust.
>>
>> Regards
>> Doug
>
> From what I've read on the Canadian Forestry site, some parasites gain
> entry
> thru cracks in the tree-bark, damaged wood or sap-holes. At least with
> pines, leaking sap is a powerful attractant.
>
> Out here in the country where the drought is biting deep, any sick or
> thirsty trees are more susceptible, apparently. The sheer number of
> different parasites makes it difficult to gain the satisfaction of knowing
> which one it is.
>
> Jason
>
Thanks Jason,
I agree that the water stress is probably making plants more susceptible.
I have often dealt with borers that go in, leave a trail of dust. But with
whatever these are, there is no visible sign till a major part of the plant
dies. When I then start lopping off the dead branch, the axial borehole has
usually got right down into the lower trunk. A single hole can be 4-6 ft
long.
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