Technologies for obtaining sunflower high yield production are directly related to the quality of the seed material. The healthy seeds, free of pathogens and seeds of weeds, could reduce the incidence of different diseases such as downy mildew, rust, Phomopsis stem canker, Sclerotinia white mold etc. Therefore, a superior quality seed characterized by high germinative power, physical integrity (no cracks), tolerance to environmental stress, disease and pest and early maturisation can play a vital role in increasing of total production and productivity due to their vigorous and uniform rising, with intense rhythm of growth in the initial phases, respectively a faster overrun of early disease attacks and soil pests. To obtain sunflower commercial seeds, only certified seed, processed and placed on the market by the licensed producers or economic agents could be used. Small seeds, which couldn’t ensure a uniform distribution of plants in the field and can cause yield losses of 25-40%, have no commercial value and are discarded. Therefore, a calibration by weight of sunflower seed before cultivation is needed. With this operation, the small, cracked, hulled and attacked by the diseases seeds are removed. As a result physical purity can grow up to 100% and the germination capacity to over 95%, ensuring a rapid, uniform outbreak, with large-scale crops less attacked by disease and, finally a production increasing. Intact seeds germinate in the proportion of 95%, cracked seeds - in 85%, and partially hulled sunflower seeds germinate less than in the 75%. The seed should be genetically identical to the cultivar released by the breeder, be full, healthy, have a biological purity of at least 99% and a germination rate of at least 96%. To minimize pathogens attack and maintain the desirable plant density, treatment of parental seeds with fungicides and insecticides is recommended. Control of isolated pathogenic and saprophytic fungi includes treatment of the seed by fungicides (mefenoxam or oxadixil plus carbendazim – against downy mildew; procimidon, thiram, or thiophanate-methyl plus thiram – against white rot and grey mold).