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<pre>Only some trees are affected and they are not located all together.
It takes quite a while for the tree to defoliate.
Yes, it has been cold and wet, but the trees are on a slope and there is good
drainage.
The soil is 4.5PH and clay.
We had a soil test done before planting 4 years ago and had all the nutrients
added that were required. Perhaps we should do this every year?
I haven't noticed worms, but the rest of the property does have them.
The trees have been planted for 4 years now and we got about 3 kgs olives on
average off them this year.
Thank you for your interest Gerhard. We are very interested in organic as well.
Trudy
----- Original Message -----
From: AgriSolutions
To: OliveOil@yahoogroups.com
Sent: Thursday, September 08, 2005 10:41 AM
Subject: RE: E: [OliveOil] Yellowing leaves


Hi Trudy,

A few questions that need answering are offered below. Some may not seem
relevant to the immediate problem, but all the variables that are likely to
impact on this symptom

Is the whole grove suffering or only isolated trees? How long does it take
for defoliation to take place? What sort of season have you had - cold and
wet? Are there 'wet spots' in the paddock? What soil type and fertiliser
history? Have you had a comprehensive INDEPENDENT soil test done (and this
soil test should ideally include biological status)? Are there signs of
earthworms and any other biological activity in the soil? What age are the
trees and how long established?

I am sure there are a lot of other questions to ask and many have already
been covered by the other postings offering opinion. Please let the group
know what you find.

Best of luck,

Gerhard Grasser

(Hon) Secretary, Organic Federation of Australia
Chair, Traders & Intermedaries Advisory Board, OFA www.ofa.org.au

IF you have even the slightest interest in sustainable or organic
agriculture & food, visit www.ifoam2005.info for more details about the
international event coming to Australia in September 2005........

AgriSolutions Pty Ltd

PO Box 81
Darnum VIC 3822

Phone 03 5627 8663
Fax 03 5627 8663 (by arrangement)
Mobile 0402 213 736
Email seagrow@...

***Natural farming advisory service
***Soil fertility specialists - Albrecht & Mikhail principles
***Independent soil, water and foliage testing
***Kelp, seaweeds and fish for soil, plants and animals
***Mineral fertilisers and stock supplements
***Natural farm inputs - hydrogen peroxide, trace elements, humates,
biologicals, organic fertilisers
***Fodder & pasture seeds

"A man should farm as if he would live 1,000 years, but live as though he
were to die tomorrow."


-----Original Message-----
From: OliveOil@yahoogroups.com [mailto:OliveOil@yahoogroups.com] On Behalf
Of hollinshead@...
Sent: Wednesday, 7 September 2005 1:45 PM
To: OliveOil@yahoogroups.com
Subject: Re: E: [OliveOil] Yellowing leaves

Thanks Russell. Our soil is very low PH and thought it could do with that.

Will get professional advice I think.
>
>
>
> Hello Trudy
>
> It's not possible to diagnose a problem online but there are a number of
>
> situations that can cause similar symptoms. I don't know where you are or
>
> what management you have applied to the trees etc.
>
> In South Australia in autumn to winter we often get some sucking insects
>
> causing similar symptoms from the under side of the leaf. One such insect
>
> is similar to the Rutherglen bug but we have never identified these
insects,
>
> merely treated them according to broad spectrum insecticides where
>
> appropriate or even biological oils.
>
> The other possibility is related to root health I.e. Phytopthera/Pythium.
>
> Bronzing and general chlorosis is common in this situation.
>
> I have seen similar symptoms from Phosphorous deficiency and even
Sprayseed
>
> damage to green trunks.
>
> I must stress that you need a consultant Agronomist to inspect the trees
to
>
> find the cause before you attempt to treat them. Online we can only guess
>
> or hint as to where the source of the problem is.
>
> I am leaning towards sucking insect damage myself but the photos aren't
>
> clear enough.
>
> There could possibly be a consultant in the discussion group from your
area.
>
>
>
> Cheers
>
> Russell March
>
>
>
>
>
> -----Original Message-----
>
> From: OliveOil@yahoogroups.com [mailto:OliveOil@yahoogroups.com] On Behalf
>
> Of trudyhollinshead
>
> Sent: Saturday, 3 September 2005 10:45 AM
>
> To: OliveOil@yahoogroups.com
>
> Subject: [OliveOil] Yellowing leaves
>
>
>
> I have been off the site for a while and have just rejoined.
>
>
>
> See the 3 photos under Hollinshead on the group site. Leaves are
>
> generally yellowing, which then moves to branches and finally the tree
>
> defoliates because it vannot photosynthesise. Leaves are also getting
>
> yellow spots on them as can be seen in the photos.
>
>
>
> Can anyone advise what this is so we can remedy please?
>
>
>
> Trudy
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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