STUDIES ON THE ATTACK PRODUCED BY THE CAMERARIA OHRIDELLA DESHKA-DIMIĆ SPECIES

The horse-chestnut leaf miner (Cameraria ohridella Deschka-Dimić) is a rather dangerous invasive pest because the larvae create galleries in the foliar apparatus of theAesculus hippocastanum L. horse-chestnut, and compromise the aesthetic aspect of the tree.During 2016 and 2017 in the southern area of Oltenia, there were made observations and determinations regarding the degree of damage and the monitoring of theCameraria ohridella Deschka-Dimić species under the microclimate conditions offered by Constantin Poroineanu Park in Caracal.Throughout the entire experimental period, a total number of 9649 adults were captured on the installed traps, out of which 4726 adults were captured in 2016 and more than 4923 adults were captured in 2017.The degree of infestation of the horse-chestnut leaves produced by theCameraria ohridella Deschka-Dimić species was obtained on the basis of the number of galleries/leaf/leaflet made by larvae in an average sample of 100 leaves. The number of galleries per leaf was of 20.9 in 2016 and 54.2 in 2017, the average of the years of research being of 37.5, and the number of galleries per leaflet fluctuated between 2.9 in 2016 and 7.7 in 2017, with an average of the years of research of 50.3