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<pre>Mike,
I saw a figure of 4Ml per hectare. In practice I am watering my trees on hills
soil (contains some clay so water retention is good) at the rate of 35litres
every 2 weeks. Trees are 1 year in the ground. You can also check the leaves and
also the sol to see if you are doing ok. But I guess you want to plan rather
than check existing trees.
Our rainfall is around 800mm per annum in the wintermonths mainly.

Hope this helps along with the rest of the responses you are sure to get.
Best Regards
Andrew & Val Brown

Mike Wilson wrote:

> Once upon a time....
>
> somewhere or other I came across some figure which indicated the amount of
> water an olive tree can expect to use at various times of the year. I have
> no idea if these figures were on this group, in a magazine (which one?) or
> in book (so many to pick from!!) but I am trying to estimate how many trees
> I can support with an annual rainfall of 600mm, summer dominant. I have some
> supplementary irrigation available, but I have a feeling that we have too
> many trees for the available water.
>
> Does anybody have a figure for young (up to 2m high) and mature trees?
>
> Regards,
>
> Mike Wilson
> Hunter Valley.
>
>
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