PRELIMINARY STUDIES REGARDING THE USEFUL AND PEST ANIMAL SPECIES FROM DIFFERENT VARIANTS OF MAIZE IN TIMIS, CALARASI AND BRAILA COUNTIES PUBLISHEDIoana Grozea, Ramona Ştef, Alin Cărăbeţ, Ana Maria Vîrteiu, Marcela Badea, Levente Molnar, Otilia Cotuna
In last time the attention of specialists is trended on finding of solutions in plant protection against pest species and protecting of useful species. The pro-against opinions existent actually on genetically modified plants convinced us to make studies regarding the effect of Bt maize on animal species who lives in maize crops. So, it were studied number of useful species and pest from soil, on plant and on traps, in comparative variant- conventionally maize and Bt maize, in some counties (Timiş, Călăraşi şi Brăila) from our country. During 2008 year we obtained some preliminaries data. These studies are needed to follow in next years (2 at least). The structure and composition of invertebrate’s fauna from the three pedoclimatically zones were analyzed by using specifically methods, detailed in lab and studies direct observations in crop maize. The representative species in the samples were follow classes: Nematoda, Arachnida, Miriapoda, Insecta. In soil samples in Bt maize and in conventionally maize, too the most of species were useful (Carabidae). Among pest species, dominants were nematodes, especially in conventionally maize. Following the directly observations, a great percent of the attack of plants was registered at species from Phyllotreta genus, especially in conventionally maize (56.3%). Following the readings of the traps (Timiş) we can mentioned that in conventionally maizeDiabrotica adults were greater (398,3ad.) than in Bt maize (146,33ad.). The results were obtained by financially and material support of international research Project MADR/MAKIS, 2008-2010.
useful and pest animal species; maize; Timis; Calarasi; Braila