Commercial Disease Controls
The Pennsylvania State University
Cooperative Extension
Beets
Seed Treatment
Use seed treated with thiram 75WP (3 oz/100 pounds; 1 level teaspoon/lb) or Apron XL LS (0.32 to 0.64 fluid ounces/100 pounds) plus Maxim 4FS (0.08-0.16 fl.oz/100 pounds).
Disease Control
Damping-Off (Pythium and Phytophthora)
Apply the following preplant incorporated or as a soil-surface spray after planting.
Ridomil Gold--1-2pt 4E/A.
Leaf Spot
Rotate to allow 2-3 years between beet plantings. Plow under beet refuse at end of season. Apply one of the following when disease threatens and repeat every 7 to 10 days. Do not make more than two sequential applications of Cabrio or Quadris before alternating with a copper fungicide.
azoxystrobin (Quadris--6.2 - 15.4 oz 2.08F/A or Amistar--2-5 oz 80WDG/A, or
Cabrio--8-12 oz 20EG/A, or
copper, fixed (Champ DP, Kocide 2000)--1.33-2.66lb 58DP/A or OLF
Pocket Rot (Rhizoctonia)
azoxystrobin (Quadris at 0.4-0.8 fl oz 2.08F/1000 ft of row or Amistar at 0.125-0.25 fl oz 80WDG/1000 ft of row.
Black Spot
Can be caused by boron deficiency. Use boron at planting according to soil test results.
Note: Where trade names are used, no discrimination is intended
and no endorsement by the Cooperative Extension Service is implied.
Information provided is intended for consideration by the user, but is not
intended to be a recommendation. Production decisions should be based on
consideration of many types of information (scientific, experiential, economic,
legal, etc.) available to the user.
