Radish (Raphanus sativus)-Aster Yellows

Latest revision: 
March 2024

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Cause A phytoplasma that is transmitted by the sugar beet leafhopper, Circulifer tenellus. Daikon appears more susceptible than round red varieties. Seed yield losses of 30% to 40% are common and are estimated to range up to 95%.

Symptoms Diseased plants exhibit phyllody, in which the normal flower changes into leaf-like structures, and common virescence, in which chloroplasts develop in normally white tissue, resulting in a green appearance. Seed set is also reduced.

Cultural control Initial attempts to control aster yellows in radish have been unsuccessful. Further research is needed.