Carbonell Bruhn, J., Briozzo Beltrame, J., 1980.
Aportes para el manejo de la aranuela roja europea, Panonychus ulmi (Koch) y su predator, Amblyseius chilenensis (Dosse) en las plantaciones de manzanos de Uruguay. Investigaciones Agronomicas, Centro de Investigaciones Agricolas Alberto Boerger, 2: 3-8.
Abstract
Amblyseius chilenensis (Dosse) is an important predator of Panonychus ulmi (Koch) in apple orchards in Uruguay. The results are given of studies there on the relations between the 2 species, with particular reference to the behaviour of the populations in orchards where no fungicides, insecticides or acaricides are applied, the behaviour of the overwintering eggs of P. ulmi, the overwintering, dispersal of the predator and its importance in relation to the non-phytophagous mite fauna and the direct and indirect effects of chemical treatments applied in the orchards. The results are discussed in relation to the development of programmes of integrated control in which P. ulmi is kept under control by A. chilenensis while insecticides that are not toxic to this predator (azinphos-methyl, phosmet or tetrachlorvinphos (stirofos)) are used to control Cydia pomonella (L.) (Carpocapsa pomonella) and Eulia sphaleropa (Meyr.) (Argyrotaenia sphaleropa). If an acaricide is needed, those that have a low toxicity to the predator are used, some of the fungicides applied to control Venturia inaequalis, especially propineb, maneb and mancozeb, also contribute to the control of P. ulmi
