Olivia T. Cavy on thu 9 nov 00
Today's Wall Street Journal (November 9, 2000) has a paragraph on page 1,
in the column entitled Business Bulletin:
"FRUIT TREES coated with specially processed kaolin, a type of clay, are
successfully warding off insects, says the Agriculture Department, whose
joint research venture with Englehard Corp., Iselin, N.J., resulted in
the product, Surround Crop Protection. The researchers say insects are
annoyed by the tiny clay particles and move on."
I have no information beyond this short mention, but I assume it's only
for insects that crawl rather than fly.
Bonnie
Bonnie D. Hellman, Pittsburgh, PA
PA work email: oliviatcavy@juno.com
PA home email: mou10man@sgi.net (that's the number 10 in the middle of
the letters)
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amy parker on thu 9 nov 00
Bonnie - is this due to the carcinogens in the kaolin?
Amy (WG)
At 12:55 PM 11/9/00 -0500, you wrote:
>Today's Wall Street Journal (November 9, 2000) has a paragraph on page 1,
>in the column entitled Business Bulletin:
>
>"FRUIT TREES coated with specially processed kaolin, a type of clay, are
>successfully warding off insects, says the Agriculture Department, whose
>joint research venture with Englehard Corp., Iselin, N.J., resulted in
>the product, Surround Crop Protection. The researchers say insects are
>annoyed by the tiny clay particles and move on."
>
>I have no information beyond this short mention, but I assume it's only
>for insects that crawl rather than fly.
>
>Bonnie
>
>Bonnie D. Hellman, Pittsburgh, PA
>
>PA work email: oliviatcavy@juno.com
>PA home email: mou10man@sgi.net (that's the number 10 in the middle of
>the letters)
>
>________________________________________________________________
>YOU'RE PAYING TOO MUCH FOR THE INTERNET!
>Juno now offers FREE Internet Access!
>Try it today - there's no risk! For your FREE software, visit:
>http://dl.www.juno.com/get/tagj.
>
>___________________________________________________________________________
___
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
>
>
Amy Parker
Lithonia, GA
RSteigmeye@AOL.COM on fri 10 nov 00
i think the effectiveness of the kaolin has something to do with the
sharpness of the tiny little kaolin platelets. it gets in the insects and
chews up their insides, i suppose. i've seen the bags of kaolin around here
and it seems to be 100 percent georgia kaolin. they spray it on the trees
from tractors or helicopters from spring to fall.
zak steigmeyer
in apple and pear country,
cashmere washington
Martin Howard on fri 10 nov 00
I remember seeing orchards in Poland which seemed to have their trunks
covered with whiting, but it could have been kaolin or a similar clay,
instead of the sticky bands that we have in the UK. Anything to stop the
creepy crawlies climbing up and laying next year's brood.
I might try it using cat litter, montmorillinite. The idea of fine grained
material being objectionable to the insects seems a new idea. It could be
passed the HDRA (Henry Doubleday Research Association) for testing.
Martin Howard
Webb's Cottage Pottery
Woolpits Road, Great Saling
BRAINTREE, Essex CM7 5DZ
England
martin@webbscottage.co.uk
in the column entitled Business Bulletin:
"FRUIT TREES coated with specially processed kaolin, a type of clay, are
successfully warding off insects, says the Agriculture Department, whose
joint research venture with Englehard Corp., Iselin, N.J., resulted in
the product, Surround Crop Protection. The researchers say insects are
annoyed by the tiny clay particles and move on."
I have no information beyond this short mention, but I assume it's only
for insects that crawl rather than fly. >
Liz Willoughby on fri 10 nov 00
This hasn't much to do with clay, but living in the country I am
plagued with "cluster flies". They reproduce in spring, summer, and
fall, and when the sun hits the windows they somehow get inside the
windows and run up and down them, and get the name of "cluster flies"
because they pack themselves together in the corners of window, etc.
They live for three days then die. They are not the normal house fly,
and when it is warm and sunny, and fall is here, there seems to be no
end to them.
I finally saw a product that works to get the beasties. A plastic
container that sticks to the bottom of the window with a slot along
the top edge. In the container is "over 1 billion Polyquartz
MICRO-SPHERES - made from egg shells." Well, I am wondering at the
term. Egg shells is calcium, and where does the "polyquartz" come in.
There only looks to be about 1/2 cup of this material in the
container, and boy is it fine stuff. There was a sponge tape to seal
it, that you remove, and the flies just go in. (heartless I know,
don't think about it)
Now, I am wondering if kaolin or silica would work as well.
Liz
Rain, rain, and rain, all the leaves are gone, and it feels like
winter is on the way.
>i think the effectiveness of the kaolin has something to do with the
>sharpness of the tiny little kaolin platelets. it gets in the insects and
>chews up their insides, i suppose. i've seen the bags of kaolin around here
>and it seems to be 100 percent georgia kaolin. they spray it on the trees
>from tractors or helicopters from spring to fall.
>
>zak steigmeyer
>in apple and pear country,
>cashmere washington
Liz Willoughby
RR 1
2903 Shelter Valley Rd.
Grafton, On.
Canada
e-mail lizwill@phc.igs.net
Cindy Strnad on fri 10 nov 00
Martin,
I'm just hypothesizing here, but I suspect the kaolin may clog up the
insects' respiratory systems . As you probably know, insects breath through
little holes in the sides of their bodies.
Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
earthenv@gwtc.net
http://www.earthenvesselssd.com
Joanne L. Van Bezooyen on fri 10 nov 00
There is a product put into swimming pool filters here in USA called D.......???
Earth. The name escapes my brain this morning. Demetrious? Anyway, it is also
used for insect control because the fine particles are very sharp and slices up
insects when they try to walk across it. We don't notice it.
This is a similar concept for the kaolin.
Joanne in Tucson
Martin Howard wrote:
> I remember seeing orchards in Poland which seemed to have their trunks
> covered with whiting, but it could have been kaolin or a similar clay,
> instead of the sticky bands that we have in the UK. Anything to stop the
> creepy crawlies climbing up and laying next year's brood.
>
> I might try it using cat litter, montmorillinite. The idea of fine grained
> material being objectionable to the insects seems a new idea. It could be
> passed the HDRA (Henry Doubleday Research Association) for testing.
>
> Martin Howard
> Webb's Cottage Pottery
> Woolpits Road, Great Saling
> BRAINTREE, Essex CM7 5DZ
> England
> martin@webbscottage.co.uk
>
> > in the column entitled Business Bulletin:
>
> "FRUIT TREES coated with specially processed kaolin, a type of clay, are
> successfully warding off insects, says the Agriculture Department, whose
> joint research venture with Englehard Corp., Iselin, N.J., resulted in
> the product, Surround Crop Protection. The researchers say insects are
> annoyed by the tiny clay particles and move on."
>
> I have no information beyond this short mention, but I assume it's only
> for insects that crawl rather than fly. >
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
--
Joanne L. Van Bezooyen
520-749-1685
Art Gecko Designs
http://www.arteriordesigns.com/noname.html
voice & fax: 520 760-1584
11220 East Via Madre
Tucson, Arizona 85749 USA
Dennis E. Tobin on fri 10 nov 00
Diametecous Earth, spelling could be off a little.
>There is a product put into swimming pool filters here in USA called
>D.......???
>Earth. The name escapes my brain this morning. Demetrious? Anyway, it
>is also
>used for insect control because the fine particles are very sharp and
>slices up
>insects when they try to walk across it. We don't notice it.
>This is a similar concept for the kaolin.
>Joanne in Tucson
>Martin Howard wrote:
>
>> I remember seeing orchards in Poland which seemed to have their trunks
>> covered with whiting, but it could have been kaolin or a similar clay,
>> instead of the sticky bands that we have in the UK. Anything to stop the
>> creepy crawlies climbing up and laying next year's brood.
>>
>> I might try it using cat litter, montmorillinite. The idea of fine grained
>> material being objectionable to the insects seems a new idea. It could be
>> passed the HDRA (Henry Doubleday Research Association) for testing.
>>
>> Martin Howard
>> Webb's Cottage Pottery
>> Woolpits Road, Great Saling
>> BRAINTREE, Essex CM7 5DZ
>> England
>> martin@webbscottage.co.uk
>>
>> >> in the column entitled Business Bulletin:
>>
>> "FRUIT TREES coated with specially processed kaolin, a type of clay, are
>> successfully warding off insects, says the Agriculture Department, whose
>> joint research venture with Englehard Corp., Iselin, N.J., resulted in
>> the product, Surround Crop Protection. The researchers say insects are
>> annoyed by the tiny clay particles and move on."
>>
>> I have no information beyond this short mention, but I assume it's only
>> for insects that crawl rather than fly. >
>>
>>
>>______________________________________________________________________________ >
>>> Send postings to clayart@lsv.ceramics.org
>>
>> You may look at the archives for the list or change your subscription
>> settings from http://www.ceramics.org/clayart/
>>
>> Moderator of the list is Mel Jacobson who may be reached at
>>melpots@pclink.com.
>
>--
>Joanne L. Van Bezooyen
>520-749-1685
>Art Gecko Designs
>http://www.arteriordesigns.com/noname.html
>voice & fax: 520 760-1584
>11220 East Via Madre
>Tucson, Arizona 85749 USA
>
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at
>melpots@pclink.com.
Dennis Tobin
Associate Professor
Art Department
Miami University
Oxford, Ohio 45056
(513) 529-1505
Cindy Strnad on fri 10 nov 00
That's diatomaceous earth (hope I spelled that right). I didn't know it was
used in swimming pool filters, but it does work great in gardens--at least
for tomato worms.
Diatoms are microscopic creatures with silicaceous armor. They're sharp. I
kind of doubt the clay works by the same mechanism. I may be mistaken, but I
don't think it has the sharp edges of deceased diatoms.
Cindy
______________________________________________
There is a product put into swimming pool filters here in USA called
D.......???
Earth. The name escapes my brain this morning. Demetrious? Anyway, it is
also
used for insect control because the fine particles are very sharp and slices
up
insects when they try to walk across it. We don't notice it.
This is a similar concept for the kaolin.
Joanne in Tucson
Martin Howard wrote:
> I remember seeing orchards in Poland which seemed to have their trunks
> covered with whiting, but it could have been kaolin or a similar clay,
> instead of the sticky bands that we have in the UK. Anything to stop the
> creepy crawlies climbing up and laying next year's brood.
>
> I might try it using cat litter, montmorillinite. The idea of fine grained
> material being objectionable to the insects seems a new idea. It could be
> passed the HDRA (Henry Doubleday Research Association) for testing.
>
> Martin Howard
> Webb's Cottage Pottery
> Woolpits Road, Great Saling
> BRAINTREE, Essex CM7 5DZ
> England
> martin@webbscottage.co.uk
>
> > in the column entitled Business Bulletin:
>
> "FRUIT TREES coated with specially processed kaolin, a type of clay, are
> successfully warding off insects, says the Agriculture Department, whose
> joint research venture with Englehard Corp., Iselin, N.J., resulted in
> the product, Surround Crop Protection. The researchers say insects are
> annoyed by the tiny clay particles and move on."
>
> I have no information beyond this short mention, but I assume it's only
> for insects that crawl rather than fly. >
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
--
Joanne L. Van Bezooyen
520-749-1685
Art Gecko Designs
Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
earthenv@gwtc.net
http://www.earthenvesselssd.com
Tom Wirt/Betsy Price on fri 10 nov 00
The word you are hunting for is diatomaceous earth. It is from the
shells of ancient sea creatures. The sharpness of the edges cuts
their little hides
> There is a product put into swimming pool filters here in USA called
D.......???
> Earth. The name escapes my brain this morning. Demetrious?
Anyway, it is also
Snail Scott on fri 10 nov 00
Diatomaceous earth does that, because the diatoms are pointy
little suckers; didn't know kaolin particles were mean enough.
The original quote mentioned "specially processed" kaolin.
Anyone know what's special about it? (I wonder if the stuff
would have other(ceramic-related) uses?)
-Snail
At 02:15 AM 11/10/00 EST, you wrote:
>i think the effectiveness of the kaolin has something to do with the
>sharpness of the tiny little kaolin platelets. it gets in the insects and
>chews up their insides, i suppose. i've seen the bags of kaolin around here
>and it seems to be 100 percent georgia kaolin. they spray it on the trees
>from tractors or helicopters from spring to fall.
>
>zak steigmeyer
>in apple and pear country,
>cashmere washington
>
>___________________________________________________________________________
___
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
>
DONALD G. GOLDSOBEL on fri 10 nov 00
I recall reading that insects avoid fine particles like datomaceous eart
because the particles clog their breathing vents which or on the sides of
their bodies. It may bae the kaolin does the same thing.
Just an idea.
Donald
Martin Howard on sat 11 nov 00
There is a product put into swimming pool filters here in USA called
D.......???
Earth. The name escapes my brain this morning. Demetrious?
Diatomaceous earth. This is made of many microscopic algae, found in all
parts of the world. They consist of single cells, known as frustrules; the
cell-wall is made up of 2 similar valves, which are usually impregnated with
silica, and which fit together like the lid and body of a pill-box.
Diatomaceous earth (diatomite) are made up of the valves of the fossil
diatoms and are used in the manufacture of dynamite and in the rubber and
plastic industries.
There does seem to be link here with the kaolin in the silica content.
An Esperanto friend in East Anglia is an expert on diatoms and actually
collects them.
It does seem to be good source raw material for experiment amongst potters.
Has anyone done any work on it?
Of course, spraying orchards with this fine siliceous material must be
hazardous to human health as well as to the creepy crawlies.
Martin Howard
Webb's Cottage Pottery
Woolpits Road, Great Saling
BRAINTREE, Essex CM7 5DZ
England
martin@webbscottage.co.uk
Norman van der Sluys on sat 11 nov 00
Back in the early seventies organic gardeners were using diatomaceous earth as an
insecticide. The sharp particles scrape away the waxy coating of their little
exoskeletons and they dehydrate. Perhaps the kaolin works the same way. I guess
we must be careful not to use ball clay from Kentucky or Tennessee on food crops,
though :o)
Martin Howard wrote:
> The idea of fine grained
> material being objectionable to the insects seems a new idea.
--
Norman van der Sluys
by the shore of Lake Michigan, waiting for Mel's winter weather to get here. Our
shipment of Minnesota Clay got here just in time, I guess.
Emma Almira on sat 11 nov 00
Martin,
This material in Britain is known as Fuller's Earth or Surrey
powder and I remember somewhere in the distant past an English potter
published glaze recipes using this, I forget where but it probably was in
Ceramic Review, the C.P.A.may be able to tell you.
Regards,
Bob Hollis
----- Original Message -----
From: "Martin Howard"
To:
Sent: 11 November 2000 08:36
Subject: Re: Kaolin to combat insects, per the WSJ
> There is a product put into swimming pool filters here in USA called
> D.......???
> Earth. The name escapes my brain this morning. Demetrious?
>
> Diatomaceous earth. This is made of many microscopic algae, found in all
> parts of the world. They consist of single cells, known as frustrules; the
> cell-wall is made up of 2 similar valves, which are usually impregnated
with
> silica, and which fit together like the lid and body of a pill-box.
> Diatomaceous earth (diatomite) are made up of the valves of the fossil
> diatoms and are used in the manufacture of dynamite and in the rubber and
> plastic industries.
>
> There does seem to be link here with the kaolin in the silica content.
> An Esperanto friend in East Anglia is an expert on diatoms and actually
> collects them.
>
> It does seem to be good source raw material for experiment amongst
potters.
> Has anyone done any work on it?
>
> Of course, spraying orchards with this fine siliceous material must be
> hazardous to human health as well as to the creepy crawlies.
>
> Martin Howard
> Webb's Cottage Pottery
> Woolpits Road, Great Saling
> BRAINTREE, Essex CM7 5DZ
> England
> martin@webbscottage.co.uk
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
>
Ron Roy on thu 16 nov 00
Yes - so sharp that it scratced the insects and they die from dehydration -
Imagine what that does to your lungs - one of the more dangerous forms of
silica.
RR
>Diatomaceous earth. This is made of many microscopic algae, found in all
>parts of the world. They consist of single cells, known as frustrules; the
>cell-wall is made up of 2 similar valves, which are usually impregnated with
>silica, and which fit together like the lid and body of a pill-box.
>Diatomaceous earth (diatomite) are made up of the valves of the fossil
>diatoms and are used in the manufacture of dynamite and in the rubber and
>plastic industries.
>
>There does seem to be link here with the kaolin in the silica content.
>An Esperanto friend in East Anglia is an expert on diatoms and actually
>collects them.
>
>It does seem to be good source raw material for experiment amongst potters.
>Has anyone done any work on it?
>
>Of course, spraying orchards with this fine siliceous material must be
>hazardous to human health as well as to the creepy crawlies.
Ron Roy
93 Pegasus Trail
Scarborough
Ontario, Canada
M1G 3N8
Evenings 416-439-2621
Fax 416-438-7849
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