Collection of scale insects in Greece in 1990 -1991 provided 71 species. Among them, 31 species were new for the Greek fauna. The total number of known species is 143 in Greece. Host plant's levels of infestation and phonological data are also presented. The results show that scale insect fauna of this country needs further intensive studies.
Summaire
En 1968, notre Station a continué les recherches expérimentales contre la mouche de l'olive (Dacus oleae Gmel.) pourétudier l'effet des pulvérisations à bas et très bas volume par rapport aux traitements à volume normal. Les applications effectuées à bas volume ont utilisé des quantités d'eau de 1, 2, 4 et 6 litres pour chaque arbre, et à volume normal 12 litres, avec un dosage constant en matiàre active de l'insecticide (diméthoate). Une autre série de pulvérisations à très bas volume a été opérée avec des insecticides spécialement préparés, tels que Dimécron 50, Carbicron 50 et Nuvacron 50 à des doses de 7, 10 et 14 cm2 par arbre. Les résultats de ces expériences sont exposés en détail.
Applications of 1, 2, 4, 6 and 12 lit. of spray per tree, each volume containing 6 g. of dimethoate a.i., did not show significant differences between the treatments, but olive fly pupae and third instar larvae were found to be more resistant than first and second instar larvae. Also, no differences became apparent between treatments with Dimecron 50, Carbicron 50 and Nuvacron 50 at rates of 7, 10 and 14 c.c. per tree respectively; these experiments will be continued.
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