Aspects regarding the dynamics of pests found in forest nurseries in North-East of Moldova during 2009-2011.

This research refers to the dynamics of pest species found in forest nurseries of the Forest Directorates Botosani, Iasi and Suceava during 2009-2011 and it is a part of an extensive research in this area. Research results show that biotic pests represent the largest percentage of harmful factors, i.e. 93.81% and from these 72.60% are insects compared with plant parasites (19.81%) and harmful mammals (7.59%). The most dangerous pests for saplings from the forest nurseries are root insects (87.20% of all harmful insects), out of which the largest share (70.87%) is Melolontha melolontha Larvae, followed by species of Elateridae with 13,20%. In practice, there are detected and predicted all kinds of insect pests, but the focus is on insects which attack the root of saplings in nurseries because the damages caused by them are significantly higher. The intensity of larvae beetles during the years studied has generally been ranked from low (43.02%) to medium (24.58%), only in certain areas the intensity was high (24.74%) or very high(7,66%). For the application of modern prevention methods and pest control is absolutely necessary to permanently know and monitor them. This will ultimately lead to the production of healthy and vigorous forest material ensuring the performance of the afforestation work quality.