Abstract
In view of the costliness and doubtful efficacy of various chemical means of control and the uncertain future value of eelworm-resistant potato varieties, there is an evident need in many countries for an extension and intensification of systematic soil-sampling surveys supplemented by statutory measures to regulate the frequency of potato cropping and to restrict the movement of infective material in order to stem the increasing spread of potato root eelworm. The comprehensive scheme in operation for 20 years in Northern Ireland, which embodies a country-wide soil sampling service together with realistic legislative measures, may provide a useful pattern of procedure, especially for those countries where potato root eelworm is a relatively new problem.
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