Very interesting article here Bill, I have tried your technique ages ago. Daconil I do like a lot but Heritage DF 50 is my top choice for a severe problem, especially on trees with high levels of anthracnose issues. I personally had a great year this year in my hydroponic outside garden. I absolutely did not use any fungicide the whole year making adjustments with my shade cloth for more airflow and pruning more heavily from the start. Of course a little luck may have played a part, but it is pretty good results considering where I live.
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