[NAFEX] Greensand equals Manganese toxicity

Kieran &/or Donna holycow at frontiernet.net
Wed Jun 24 22:45:35 EDT 2009


Jim,
    I'm thrilled with the idea of something with a lot of manganese in it.  That's one of the deficiencies that shows up here, yellow stripes in the corn that do NOT respond to adding Mg, but do respond to adding sulfur.  (The sulfur lowers pH enough for Mn to be available.)  Maybe you have too much Mn already where you are.    Donna
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