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Coldwater, Michigan | Well that is in interesting question. If you are going to go dry, Zinc Sulfate is the right way to go. Rather see it banded than broadcast because of the expense of it, and the amount of material it will take to do you any good.
Liquid, since there is no Phosphorous to tie it up, I think the Citric 9% can be an acceptable choice. 2" x 2" should be good placement for it. If there was "P" in the trench with it, then EDTA would be a better choice for chelating agent.
Edited by Bill Moyer 4/10/2015 08:29
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Zinc Sulfate vs 9% edta
