Wondering if you have positive or negative experience to share about using Bacillus based fungicides and/or Beauveria based insecticides? (Or any other similar product)? Thanks in advance.
I have tried Arber’s Biofungicide, which contains Bacillus amyloliquefaciens strain F727. I can’t say I found it to be very effective, but 1) I started it later on the season last year, so it probably didn’t work as well as a preventive, and 2) so far, I really haven’t found anything that truly effectively controls black spot all season. I am trying it truly as a preventive this year and have already sprayed once, and plan to alternate with more “traditional” sprays.
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