waldenfarm at sprintmail.com
Sat Jun 10 12:37:58 EDT 2000
Epsom Salt is magnesium sulfate- more exactly, magnesium sulfate
pentahydrate. It contains both Magnesium and Sulfur.
As for organic certification- some certifiers list it as "Restricted"
and, if so, can only be used if a deficiency of Magnesium is determined
by a soil test.
Using any mineral indiscriminately can lead to a build up of that
mineral in the soil. This can mean a mineral imbalance in the soil and
some micronutrients can build up to a toxic (for plants) level. The
calcium/magnesium balance in the soil is an important one.
Jill Taylor Bussiere wrote:
> I was at market yesterday - the first one of the year for us!, and was
> talking to a sister vendor. I asked what she used to keep her
> radishes bug free, and she said Epsom Salts. What are Epsom Salts
> made of, and is their use within the guidelines of the organic
> standards? Jill
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