View Single Post
  #12   Report Post  
Old 13-06-2003, 03:20 AM
Joe Doe
 
Posts: n/a
Default pelletized gypsum (to amend clay soil)

In article , Tom Jaszewski
wrote:

On 12 Jun 2003 14:24:59 GMT, (Marley1372) wrote:

Personally, I
just think gypsum is a bunch of crap.



It's a good thing sustainable farmers don't share your opinion!!!


Gypsum is mainly helpful in sodic soils and is generally misapplied to
all clay soils. They help sodic soils because the calcium displaces
sodium which allows clay particles to flocculate and thus improve
drainage. In soils that are already high in calcium this obviously cannot
occur and so is indeed a waste.

See:
http://www.wtamu.edu/~crobinson/DrDirt/gypsum.html

http://turfgrass.hort.iastate.edu/extension/gypsum.pdf

Roland