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Old June 28, 2010   #7
Timmah!
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Location: Elizabethtown, Kentucky 6a
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Quote:
Originally Posted by VORTREKER View Post
According to Dr. Stanley Barber, Purdue Univ., "There is no research justification for the added expense of obtaining a definite Ca:Mg ratio in the soil. Research indicates that plant yield or quality is not appreciably affected over a wide range of Ca:Mg ratios in the soil."


Gypsum is recommended for two primary purposes. They are
  1. To remove excess sodium (Na)
  2. To build soil calcium (Ca) levels when a pH change is not desired
You're forgetting another important reason to use Gypsum: To make the soil more friable; making it better drained & aerated, reducing crusting, erosion, and compaction and allowing better root penetration.
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