Abstract
Early records of beet cyst nematode (Heterodera schachtii Schmidt) in Britain and the history of regulatory measures to control it are summarized. Data collected between 1928 and 1976 were computer mapped on a 10 km grid scale to illustrate the cumulative distribution of beet cyst nematode in Britain. The distribution of the nematode was compared with that of its principal host, sugar beet. Data collected between 1962 and 1977 in East Anglia were computer mapped on a 1 km grid scale to show the detailed distribution of beet cyst nematode in that area. The advantages of computer‐generated distribution maps over manually produced maps are discussed.
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