Records of crop damage by some species of cyst nematodes in eastern England, 1967–77

Abstract

SUMMARY Records of crop damage in eastern England from 1967 to 1977 inclusive are tabulated and mapped for the cereal cyst nematode (Heterodera avenae Woll.), carrot cyst nematode (Heterodera carotae Jones), brassica cyst nematode (Heterodera cruciferae Franklin) and pea cyst nematode (Heterodera goettingiana Liebscher). Although distributions of crop damage by these cyst nematodes have not altered significantly from previous reports, the frequencies show distinct fluctuations from year to year.