Abstract

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The present study was carried out to investigate the effects of different nitrogenous fertilizer treatments through soil (0, 30, 60, 90, 120 and 150 kg N ha^-1) on macro and micro nutrient (N, P, K, Ca, Mg, Fe, Zn, Mn, Cu and B) contents of the seeds of different oil sunflower cultivars (Isera (early), C-70165 (medium-early) and Teknosol (late)). Experiments were conducted under ecological conditions of Erzurum Province during the years 2011 and 2012 in randomized blocks experimental design with three replications. As a result, gradually increasing nitrogenous fertilizing to the soil while sowing increases N and K content of seeds decreases P, Ca, Mg, Fe and Mn content of the seeds. Despite the fact that there is no specific stability, Zn content is also affected by different nitrogen doses. It were found to be significant that the effect of sunflower varieties nutrient content excluding manganese and nitrogen elements.

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