EPPO Global Database

EPPO Reporting Service no. 10 - 1993 Num. article: 1993/186

Onions - a new host for Meloidogyne chitwoodi

In California (US) young onion plants (Allium cepa) showed severe stunting and root galling. Reason for these symptoms were investigated and it was found that Meloidogyne chitwoodi (potential EPPO A2 quarantine pest) was the causal agent of this disease. The pathogenity of the nematodes was confirmed in greenhouse tests. This is the first report of the root-knot nematode infesting onions.


Westerdahl, B.B.; Anderson, C.E.; Noffsinger, E.M. (1993) Pathogenicity of the Columbia root-knot nematode (Meloidogyne chitwoodi) to onions.
Plant Disease 77, p. 847.