oa Journal of the Entomological Society of Southern Africa - Notes on the control of aphid vectors of the potato leaf roll virus in South Africa
In a former publication (Daiber, 1962) observations on the population, dynamics of potato aphids in South Africa were reported. The colonization of potatoes by Myzus persicae (Sulzer), the most efficient vector of the leaf roll virus (Smith and Brierley, 1956), and by other potato aphids were descriptionbed as well as the spread of the leaf roll virus in the potato crops. The experiments were carried out with systemic insecticides to exclude any aphid population on the potatoes during the growing season. As a result of such sprays the leaf roll incidence in the crops from these treated fields was considerably lower than in untreated plots.
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