Threshold Populations of Heterodera cruciferae and H. schachtii Causing Damage to Cabbage Seedlings. J. McCann, National Vegetable Research Station, Wellesbourne, Warwick CV 35 9 EF, England. Plant Dis. 65:264-266. Copyright 1981 American Phytopathological Society. DOI: 10.1094/PD-65-264.

Cabbage cv. Firmhead seedlings were grown in a glasshouse in soil infested with either the cabbage cyst nematode (Heterodera cruciferae) or beet cyst nematode (H. schachtii). Nematode infestation retarded the growth of the plants, and their root systems were less extensive than those of plants in uninfested soil, but no specific aerial symptoms of attack occurred. Damage caused by the two species varied according to the soil population level: H. schachtii caused more damage than H. cruciferae at 80 cysts per 100 g of soil.

Keyword(s): Brassica oleracea var. capitata.