The research was made with the purpose of establishing the varieties on which, in the favorable pedoclimatic conditions for rape from the Vest Plain in our country, can be obtained the highest oil productions. In this way, was studied to the influence of the fertilization upon the oil content, at an assortment of seven rape varieties. The researched biological material was formed of seven rape varieties new for the reference area, as follows: Valesca, Orkane, Ader, Potomac, LG, Belini, Milena. To point the negative effect of the nitrogen fertilization, to optimize the doses upon the oil content, was accounted the agrofond dose, in domain N0-N150. The research was made on a fund of P80 K80, so that varieties can expose their productive potential and the specific oil content. The results obtained accentuated the fact that the seven rape varieties studied, in the fertilization domain N0-N150, the oil content varied between 43,1% and 47,7%. The highest oil content was registered on Milena variety. The oil production was calculated on the base of the determined oil content and the seeds production. Fertilizers with nitrogen, negatively influenced the oil content, at all the studied varieties, the oil content being inferior on the agrofond fertilized with nitrogen, towards the agrofond that wasn’t fertilized with nitrogen. The researches results are important for the growers, because they increase the possibility to obtain oil productions higher than 1t/ha.

behaviour; varieties; fertilization; rape autumn

Presentation: oral