ABSTRACT

Aonidiella aurantii (Mask.) was found mainly on the fruit itself and the branches, but much less frequently on the leaves. The infestation of the fruit did not exhibit any significant differences in relation to exposure to the four points of the compass. The figure of almost 100% for March 1981 dropped to a mean value of less than 20% for May 1983, probably as a result of the combined action of three main factors, viz: a) a mineral oil treatment in the autumn of 1981, b) the high temperatures recorded in June 1982, and c) the parasitic action of two Aphelinidae, Aphytis melinus De Bach and Aphytis chrysomphali (Mercet).