The correct application of any specific technological links sunflower crop, agriculture becomes more sustainable and performance. As with any crop plant, the company achieved spectacular progress Limagrain in Romania in recent years require further research on the main features of type sunflower hybrids Clearfield, their behavior under the influence of differentiated chemicals and foliar fertilization, with further implications on production and morphological features of the achenes. Sunflower hybrids with genetic resistance to certain herbicides imidazolină or sulfuran-urea type that can be applied postemergent contributes well as increasing yields per hectare and the efficiency of sunflower crop in the farms. Bifactorial type experience in the experimental field was located in USAMVB Timişoara. The study took three sunflower hybrids: Rimisol (approved for cultivation in Romania in 2004), F 30008 and Hidalgo, tested against four agro-backgrounds: N0P0K0, N60P60K60, N90P60K60 and N60P60K60 + foliar fertilizer (Fertitel) . In the present paper ther are highlighted aspects of the importance of the Clearfield sunflower hybrids (resistant to the herbicides of the imidazolinones group ) in Romania, the role of the chemical and foliar fertilizers on the sunflower plant growth and development with subsequent implications on production and morphological features achenes, optimal doses of fertilizers with nitrogen, phosphorus and potassium for the pedoclimatic conditions of Timisoara. When applying a foliar vegetation agro-background N60 P60 K60, achieved production of 4602 kg / ha with 263 kg / ha more than the output produced agro unfertilized. Increased production from agro control is provided as very significant. Balanced fertilization with NPK and foliar fertilization applied agro-background N60 P60 K60 positively influence the formation of achenes thereby achieving average yields as highly significant statistically. Physical traits MMB and MH are less influenced by different culture conditions and are quite high for the year what climatic conditions argue that hybrids have a high degree of adaptation to conditions less favorable for sunflowers. Analyzing the three hybrids tested MMB to highlight the fact that fertilization stimulates foliar chemical and mass value of 1000 grains, leading to its growth.

sunflower hybrids; hectoliter weight; 1000 grainsweight; yield

Presentation: oral