Michigan State University Extension
Michigan Soybean Information - 00000026
11/16/00
Purple Seed Stain (Cercospora kikuchii)
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The fungus causing purple seed stain can infect seeds,
pods, stems and leaves of the plants. (Vis. 1) However,
the pink to purple discoloration of seeds is the most
conspicuous symptom. Seeds with more than 50%
discoloration are poor quality and, if planted, result in
delayed emergence and reduced stands. Disease symptoms
appear on leaves as numerous irregular, small, necrotic
spots. Infection takes place at flowering or soon after.
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This file was generated from data base S1 on 11/16/00.
Data base S1 was last revised on 11/16/00.
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