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Re: [APD] Gypsum
I wouldn't argue with the extension service article because gypsum can only
have an effect if the soil is calcium depleted. Adding excess calcium to
already calcium rich soil won't help. The soil in my backyard at the time I
added gypsum was calcium depleted -- tomatoes suffered blossom end rot if
the soil was untreated. My husband, a clay minerologist, assures me Ca can
have major impact on clay structure. As to whether that translates into a
noticeable change in soil properties is another matter. Overall, though, the
gypsum (and I got mine from broken, used sheetrock rather than buying the
stuff) doesn't have as much impact as compost in my opinion.
On 8/21/05, Darrell Fennell <dkfennell at yahoo_com> wrote:
> Liz, most people say it helps loosen clay soils, but
> the Denver Coop Extension Service disagrees.
> I must say my recollection of Brady supports the view
> that Gypsum can't affect soil structure. (Brady,
> however, is so badly written and such an unpleasant
> reading experience that my recollection is better
> about the pain of getting through the text than the
> actual substance of it.)
> Darrell Fennell
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Breakthroughs are not achieved through consensus thinking.
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