Taking an environmentally sensitive approach to pest management


Missouri Produce Growers



AUTHOR

James Quinn
University of Missouri
Extension
(573) 634-2824
quinnja@missouri.edu

Disease Update

James Quinn
University of Missouri
(573) 634-2824
quinnja@missouri.edu

Published: August 1, 2010

As part of the mini clinics we have been pulling some samples that we are unsure of, or find of interest, and having them confirmed at a diagnostic lab. I’ll review those results, but first:

  • Late blight of tomato and potato has continued moving westward, but is still safely away from Missouri. It has been confirmed in Michigan, Eastern Indiana, Ohio & Kentucky.

From Southwest Missouri in late June two samples were submitted:

  • Southern Blight on tomatoes has been confirmed. This is not a common disease in the Midwest, but tends to occur with hot humid weather and damp conditions. There is no fungicide treatment for this.
  • Anthracnose fruit rot (ripe rot) was found in a high tunnel, that also had Early Blight.

From the Clark area in early July:

  • Fusarium stem rot was confirmed on bell peppers. Wet conditions and high humidity aggravate the disease. No fungicide treatment available.
  • Bacterial speck on tomato fruit, but where the foliage had no apparent infection.

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REVISED: December 2, 2015