Phosphite Fungicides


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@Marck , I purchased a product, agro-phos, for the purpose of sudden oak death. But the label has all kinds of uses on tomatoes and other vegetables- even though it is a systemic. Could you help me understand a safe usage of this potassium salt of phosporous acid relative to the Alabama fungal party relative to what we ingest? What other systemic protections are available for home gardeners?
 
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I've never used the fungicide Agri-fos (that's how I've seen it spelled), but I understand that it breaks down into phosphorus, which is a primary plant nutrient. Presumably that is why the label claims it is safe for food crops, though I doubt that passes muster with organic certification.

Good luck with managing with Sudden Oak Death. How bad is it in Alabama?
 
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7,000 dollars so far, but I did not have a proper test on the roots, just the tree services over a couple of years or three. The price we pay for having a roof you cannot see on google maps.
 

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