Abstract

SUMMARY.A disease of white clover, due to the eelworm, Tylenchus dipsaci, has been found to cause serious harm. This and other diseases are thought to be partly responsible for the lack of permanence sometimes ascribed to strains of white clover. In tests of the susceptibility shown by various clovers to the attacks of the eelworm from wild white clover, remarkable resistance was shown by red clovers and the maximum susceptibility by cultivated white clovers. The suggestion is made that in future tests of the relative susceptibility of various plants to attack by this parasite, the former hosts of the eelworm should be taken into account.A grant in aid of this and other work in connection with wild white clover was made by the Ministry of Agriculture.Thanks are due also to Mr Harald Faber, Agricultural Commissioner to the Danish Government, to Messrs Donaldson & Co., and to Messrs Gartons Ltd. for kindly supplying many of the seeds used.

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