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Re: [APD] Aquatic Snail removal challenge
I will make some local enquiries to see if I can obtain some "Yandilla
mustard meal" to run some experiments. The snail angels (that is what I
call the lovely young ladies who come here to inspect my ponds) in the
Fisheries pest dept may be interested as well. The are other waterplant
producers here that have been quarantined because of snails.
I won't experiment on all the plants as I did last time but on one aquarium
full of growing plants and plenty of snails. I took the risk and lost last
time because I was under quarantine and wanted to get back to work quickly.
On 26/12/2004 10:49, "Liz Wilhite" <liz_wilhite at hotmail_com> wrote:
> I might experiment with "Yandilla mustard meal" sold in Australia as slug
> killer, but I really mean experiment. When wet, mustard meals releases
> isothiocyanates -- the same stuff that gives heat to horseradish and chinese
> mustard. In small concentrations isothiocyanates kill slugs and snails, in
> somewhat higher concentrations they are herbicides, hence the reason for
> experimentation. (And a cupful of it could kill a fair sized group of
> people.) I know of experiments conducted in the US at University of Idaho on
> the efficacy of mustard meal as a slug killer, insecticide and herbicide.
> Generally, concentrations that kill slugs and snails *on dry land* do not
> affect plants but this might not translate to aquatic plants and snails due
> to possible heightened sensitvity on the part of plants or decreased
> sensitivity on the part of snails. Mustard meal sprinkled on top of
> houseplants is the best fungus gnat killer around.
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