The research was conducted in experimental field from SDE Timisoara in 2009 on mold bill soil and implied 20 maize hybrids (FAO 300 - 400) from Maize Research Station Zemun Polje Beograd. The features implied were crop per plant, MMB and the number of grains rows per cob. After 2000, the number of firms marketing hybrid seed increased very much and thus one can find nowadays a lot of hybrids that do not always answer in a satisfactorily manner from an economic point of view. The research method used was the comparative culture with three replications. The elements of micro plot trial are as follows: Number of experimental hybrids – 20; Number of check hybrids – 2; Total number of hybrids in trial – 24; Number of replications – 3; Number of locations – 1; Number of micro plots per trial – 72; Total number of micro plots in locations – 72; Inter row distance - 70 cm; Distance between plants - 21 cm; Number of plants per micro plot – 20; One row micro plot size/hybrid - 2.94 m 2 . The seed for two check hybrids (the most popular commercial hybrids at the market from FAO 300-400 maturity range) should be provided by Performer. Hybrids under study belong to different precocity groups, starting with semi-early ones up to late ones, according to FAO classification. The maximization of biologically production potential in the case of hybrids taken under study implies their research in high densities and under optimum technological conditions in order to do not interfere with their capacity of production. Higher densities per area unit can create optimum condition in order to obtain appropriate features for top production potential. On this purpose, 20 plants per each row of subdivided parcel were harvested in order to determine the features taken under study.  Keeping in mind the importance of correct technology use in maize crop, farmers should obtain an optimal density and a homogeneous crop.

maize; hybrid; crop; yield

Presentation: oral