. The present work was carried out at the experimental area of the ?Faculdade de Ciências Agrárias e Veterinária? Campus of Jaboticabal - UNESP, in a dark red Latossol, sandy phase, in order to analyse the lipid-protein ratio and the physiological quality of sunflower seeds produced by different doses of nitrogen fertilizer. It was used the cultivar Anhandy with a 07m spacing between lines with a density of five plants by linear meter, corresponding to a population of 71,428 plants/ha. The experimental design was totally randozimed and consisted of five different doses of nitrogen (applied 50 days after sowing) and four replicates. The five doses were 1, 3, 5, 7 and 9g of N per plant. The sowing dosis was the same for all treatments, i.e., 1g per plant. Nitrogen and oil levels were analyzed as well as seed quality through germination and speed of emergence tests. Increasing doses of N caused an increased protein level and a decreased oil level of the seeds. Seed germination was significantly affected by the treatments only in terms of its velocity; total germination was statistically the same for all treatments.