Research on pest evolution to Platanus spp. from nurseries.
In recent years, in Bucharest and in other urban centres in our country began to be placed Platanus spp. trees. In the area of Bucharest, in the year 2014 was an extension of two dangerous Platanus' pests [The sycamore lace bug (Corythucha ciliata Say, 1832 - Hemiptera: Tingidae) and leaf-mining moth (Phyllonorycter platani Staudinger, 1870 - Lepidoptera: Gracilariidae)]. Research has followed the evolution of these pests in the nursery from Bolintin Deal and identifies other potential pests that have the potential to attack the Platanus spp. Phyllonorycter platani species has been reported in Europe in 1964, in Padova, Italy, and Romania by Kis, in 1990. The greatest danger of this pest is the association brought two fungi Ceratocystis fimbriata Ellis and Halsti. form platani J. M. Walter and Apiognomonia (Gnomonia) veneta Sacc. and Speg. that through synergy with pests can cause decline and death of trees. The two pests have, in addition to their herbivorous character, a negative impact on the visitors of the parks or streets both from the point of view of aesthetics and hygiene and much more sycamore lace bug can be an agent of insect-caused dermatosis considered subjects who visit or live near wooded areas or trees which are infested. In order to carry out effective and well timed control methods, bio monitoring studies of the pests are necessary. The biology, ecology and the vulnerable life periods of the pests were studied. It was noted intensity and frequency of infested leaves, calculating the degree of attack, these indicators are variable, depending on the pest life cycle or the period studied. For Corythucha ciliata recorded population was between the 2 and 8 exemplars/leaf attacked, while for Phyllonorycter platani attack was between 441 and 549 leaves attacked, regarding the number of mine/leaf between 1 and 10 and ranges of attacked leaf surface is between 1.4 and 5.5/attacked leave. Are presented other pests identified in the nursery. It is discussed also the possibility that other important quarantine of Platanus spp. pests to appear in Romania.