Researces Regarding the Interaction Between Cultivating Variety – Fertilized – Planting Distance Between Rows at the Oilseed Rape

The research was made for quantification the interaction between cultivating variety –fertilized-planting distance between rows at the oilseed rape in the favorable pedoclimatic conditions for rape on the Vest Plain where can be obtained the highest productions. In this way, was studied to the influence of the fertilization upon the productions, 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 productions, was accounted the agrofond dose, in domain N0-N225. 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-N225, In average on the 4 agrofonds and the two distances between the rows, it resulted that in the researched area the most appropriate is Valesca variety, on which the harvest exceeded 2800 kg/ha. Varieties Milena, Potomac and Orkane registered harvests of over 2200 kg/ha. Yield increases obtained for the varieties fertilized with nitrogen at all doses level, are very significant. Distance between rows, represents a technological element studied in all the countries that cultivates autumn rapeseed. The results obtained in the experimental cycle, regarding this aspect, leads to the conclusion that for the studied varieties, a distance between 12,5 and 25 cm, ensures an harvest increase the exceeds 300 kg/ha. The researches results are important for the growers, because they increase the possibility to obtain productions higher than 3700 kg/ha.