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| I'm no expert, but the way I understand it chelation has little to do with tie up or availability. The decision needs to be based on fertilizer compatibility. Polyphosphates are a chelating themselves, so a chelated zinc would be less important. Orthophosphates on the other hand probably require a chelated zinc. 50/50 blend, I guess I'd jar test it.
I think you would be fine with water, but I would think agitation would be your friend. | |
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Zinc sulfate in furrow
