RESPONSE OF SOME SUNFLOWER GENOTYPES TO NITROGEN FERTILIZER LEVELS
Sinai Journal of Applied Sciences
Sunflower (Helianthus annuus, L.) is an important oil seed crop, which ranks a fourth next to groundnut, soybean and rapeseed which contributes as edible oils over the world. Due to the importance of this crop, this study was conducted to investigate the effect of three levels of nitrogen fertilizer (30, 45 and 60 kg fad. -1 ) and eight genotypes of sunflower i.e. two cultivars (Giza 102 and Sakha-53) as control and six genotypes (A-120, A-34, A-44, A-45, A-47 and A-48) under North Sinai
... North Sinai conditions through two seasons of 2015 and 2016. In this study there were 24 treatments including three nitrogen fertilizer levels and eight sunflower genotypes. Results showed that increasing nitrogen levels increased yield and it′s components and protein content, while, oil content was decreased. The interaction between Giza 102 and nitrogen level 60 kg N fad. -1 gave high value in each of 100-seed weight, head seed weight, oil yield, seed yield and protein yield in 2015 season, but, the interaction between the fertilizer level 60 kg N fad. -1 and genotype A-48 gave significant superiority in 100 seed weight, head seed weight, oil yield, seed yield and protein yield in the 2016 season, In conclusion, sowing A-48 genotype with 60 kg N fad -1 was the best treatment under North Sinai conditions. Abd El-Lateef, A.A. (2012). Effect of sowing dates and zinc foliar on the productivity of some sunflower cultivars at New valley. Mansoura J. Plant Prod., 3 (10): 2595-2605. Abd El-Satar, M.A.; Ahmed, Asmaa, A.; Hassan, T.H.A. (2017). Response of seed yield and fatty acid compositions for some sunflower genotypes to plant spacing and nitrogen fertilization. Info. Proc. Agric., 4 (3): 241-252. Abdel-Motagally, F.M.F. and Osman, E.A. (2010). Effect of nitrogen and potassium fertilization combinations on productivity of two Sunflower cultivars under East of El-Ewinate conditions. Ame.-Eurasian J. Agric. and Environ. Sci., 8 (4): 397-401. Ahmad, M.I.; Ali, A.; Khan, A.; Sher, A.; Rashid, A.; Jamro, S. A.; Ur-Rahman, S. and Ahmed, S. (2017). Nitrogen management of Diverse sunflower (Helianthus annuus L.) hybrids production under agro-Climatic conditions of Sargodha Pakistan. Ame. J. Plant Sci., 8 (6): 1357-1367. Ali, A. and Ullah, S. (2012). Effect of nitrogen on achene protein, oil, fatty acid profile, and yield of sunflower hybrids. J. Agric. Res., 72 (4): 564-567. Ali, A.; Afza, M.; Rasool, I.; Hussain, S. and Ahmad, M. (2011). Sunflower (Helianthus annuus L.) hybrids performance at different plant spacing under agro-ecological conditions of Sargodha, Pakistan. Int. Conf. Food Eng. and Biotechnol. IPCBEE, IACSIT Press, Singapore, 9:317-322. Alves, L.S.; Stark, E.M.L.M.; Zonta, E.; Fernandes, M.S.; Santos, A.M.D. and Souza, S.R.D. (2017). Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar. Acta Scientiarum Agron., 39 (1): 59-66.