<table border=0 cellpadding=2 cellspacing="0"><tr><td>
<pre>john,
I checked the couple of trees on which I had put the "chalk" and after a
few days of showers there is no chalk left. So the effectiveness would
be limited. With the results of your email below it would seem that we
might be back to square one.
I have another question though. There are some products around, one of
which is tanglefoot and another is an organic goo from an organic group
in Queensland. The latter has been found to be effective on some trees
which were being attacked by the curculio beetle. Usually this is put on
a tape which is bound around the trunk. Has anyone had experience with
putting either of these goos directly onto the trunk. Please give us
experience rather than supposition. The main question is whether it
would cause the tree to be ringbarked.
Cheers
Andrew
johnat.sold wrote:
> --- In
OliveOil@yahoogroups.com, andrew.petherbridge@h... wrote:
> >
> >
> > Hi Andrew,
> >
> > Chalk - this is a really interesting idea to deal with ants.
> >
> > Chinese ant chalk? If you haven't done so - suggest it might be worth
> > confirming what is in this chalk before you use too much of it?
> >
> > There is a Chinese ant chalk around that contains neurotoxins.
> >
> > Is this China chalk just your normal 'teachers' chalk?
> >
> > This link below might be relevant:
> >
> >
> > (see
http://www.cdpr.ca.gov/docs/archives...1998/chalk.htm).
> <
http://www.cdpr.ca.gov/docs/archives.../chalk.htm%29.>
> >
> >
> > Cheers
> >
> >
> > Andrew
> >
> >
> > (Olive grove in Mt Compass, South Australia)
>
> I just had a look, it is VERY interesting, to say the least. I'd be
> very, very, very wary of using this stuff on any fruit trees.
> Although, if someone has some, they could always get an analysis done
> and try to register it. Might be highly expensive tho'.
>
> The following quote from that site Andrew mentioned is appropriate ...
> ----------------- quote ----------------------------------------
> For instance, three samples of a product labeled "Miraculous
> Insecticide Chalk" were analyzed by DPR last month. Two contained the
> insecticide deltamethrin; the third contained the insecticide
> cypermethrin.
>
> Deltamethrin and cypermethrin are synthetic pyrethroids, a class of
> insecticides that act on the nervous system. Overexposure to them can
> produce serious health effects, including vomiting, stomach pains,
> convulsions, tremors, coma, and death due to respiratory failure.
> Serious allergic reactions are also possible.
>
> In addition, analyses of colorful boxes typically used for these
> products has found high levels of lead and other heavy metals in the
> packaging. This can be a problem if children place a box in their
> mouths or handle the boxes and transfer the metal residue to their
> mouths.
> ---------------------- quote --------------------------------------
> Not sure of deltamethrin or cypermethrin are registered for uso on
> olives (or anything else, for that matter).
>
> Cheers
> John Attwood
> Tamworth NSW Au
>
>
>
>
>
>
>
> **************************************************
> Post message:
OliveOil@yahoogroups.com
> Subscribe:
OliveOil-subscribe@yahoogroups.com
> Unsubscribe:
OliveOil-unsubscribe@yahoogroups.com
> Moderators:
OliveOil-owner@yahoogroups.com
> **************************************************
> SPONSOR:
http://www.sadoun.com
>
>
> ------------------------------------------------------------------------
> YAHOO! GROUPS LINKS
>
> * Visit your group "OliveOil
> <
http://groups.yahoo.com/group/OliveOil>" on the web.
>
> * To unsubscribe from this group, send an email to:
>
OliveOil-unsubscribe@yahoogroups.com
> <mailto:
OliveOil-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>
> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service <
http://docs.yahoo.com/info/terms/>.
>
>
> ------------------------------------------------------------------------
>
</pre>
</td></tr></table>