Published online by Cambridge University Press: 05 June 2009
The sudden occurrence of severe attacks of A. dipsaci on cultivated plants has never been completely explained. Goodey (1933 and 1936) has summarised the information on the subject of seed-borne infection by means of the seeds of cultivated and wild hosts. The same writer also suggests that weeds may play an important rôle in maintaining an active eelworm infestation in the soil by acting as hosts for strains of the eelworm capable of producing diseased conditions in cultivated crops.