THE SITUATION OF THE ATTACK CAUSED BY THE LARVAE OF DIABROTICA VIRGIFERA VIRGIFERA, IN THE MAIZE CROPS OF NEAMŢ COUNTRY, UNDER CONDITIONS OF 2019

Abstract

The material was collected in the corn crop belonging to the Ghiorghesti stationary, Neamt. In this periode, constant harvest was carried out between May and August 2018, by taking over biological material represented by roots and maize stalks that have been brought into the laboratory for examination and processing the data obtained. From the collected biological material, the Diabrotica virgifera virgifera specimens that have been determined and centralized have been retained.  The material was harvested on the three variants represented by untreated seed maize (V1), maize crop to which was applied the granulated soil treatment (V2) and maize crop to which was applied the seed treatment (V3). During the period of observation, were collected a number of 1951 specimens of larvae of Diabrotica virgifera virgifera. Following the centralization at variant 1 we totaled 963 specimens, at variant 2 we totaled 476secimens and at variant 3 we totaled 512 specimens.