From: Joe Hecksel Chemical ammendments like gypsum and limestone displace
the sodium and potassium ions with calcium ions.
Thanks much Joe for your explanations.
I have been considering amending my clay hill apple orchard with gypsum but
wonder how to apply it. Considering clay's nature I would think that a
surface application, say a ton per acre, would never get down into the clay
to do its work. I would think it would have to be worked down deep with
heavy equipment prior to planting. Can surface application work?
Secondly, during the last Nafex conference a knowledgeable grower strongly
recommended cobalt as the solution to breaking up clay. I have no idea what
level of application, and would not want to over appply. Does it work with
ions as well, or some other mechanism?
Del
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Re: [NAFEX] Clay,gypsum,cobalt,
del stubbs, 01/05/2003