Re: CULT:Leaf Spot Invasion

  Bill replied to my question about the difference in appearance of bacterial and fungal leaf spot:
  <Bacterial leaf spot tends to begin at the tips of leaves.  The spots have
  "soft" watery centers and usually do not have a darker ring.  The spots and
  areas quickly expand and run together in wet weather until the entire leaf
  is destroyed, often leading to rhizome rot.  When the leaf is dry, the
  progress of the disease pretty much stops, but it can be rampant if there
  are several days of wet conditions.  Warm, dry weather usually brings it to
  an end.>

  Thanks, Bill, for your explanation.  Does bacterial leaf spot cause the strong odor that bacterial rhizome rot does?  (Phew!)  As best I can remember, I have seen something similar to what you describe only once, in a shipment of rhizomes from the west coast.  Several of the fans showed rot where they had a label stapled to them, and I could smell the odor when I opened the box.  This was a club order and I isolated the affected ones, cleaned them up and potted them.  One or two did not survive, as I recall, but the others did, grew well, and were taken to the club sale.

  Judy Hunt in Louisville, KY





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