Nutrient uptake, fatty acids, seed yield, oil yield.


This  study was conducted at two different research fields (Kanipanka and Qlyasan), at the Kurdistan region of Iraq during winter season (2019- 2020) to investigate the effects of NPK and organic fertilizer application on seed yield and its components, protein, oil content, oil yield, and some fatty acid compositions. The experimental design was a complete block design with three replications. The application of (0.00, 40, 80, and 120 kg NPK ha-1) are the main plots. While three applications of (0.00, 600, 1200 kg organic fertilizer ha-1) for subplots. The 120 kg NPK ha-1 had highest seed and oil yield of 2474.178, and 793.249 kg ha-1, respectively, the average of both locations. The application of 1200 kg organic fertilizer ha-1 gave the maximum seed yield, the oil yield of 2172.642, and 719.463 kg ha-1, respectively, for the average of both locations. Results showed the significant effect of NPK and organic fertilizer applications on the percentage of oleic, linoleic, and stearic acids. The study was proved the significant and highest oil yield when NPK application rate increased from 40 to 120 kg ha-1 and from 600 to 1200 kg organic fertilizer ha-1.


Abit, M.J.M., K, Weathers, and D.B. Arnall, D.B. 2016. Evaluating the impact of starter fertilizer on winter canola grown in Oklahoma. Intel. J. Agron

Abou El-Magd, M.M., El-Bassiony., A.M and Z.F. Fawzy, 2006. Effect of organic manure with or without chemical fertilizer on growth, yield and quality of some varieties of broccoli plants. J. of Applied Sci. Research, 2(10): 791-798

Agbede, T.M., S.O. Ojeniyi, and A.J. Adeyemo, . 2008. Effect of poultry manure on soil physical and chemical properties, growth and grain yield of sorghum in southwest, Nigeria American-Eurasian. J. of Sustainable Agric. 2(2): 72-77

Al-Hasanie, L. N. H. and A. D. Al-Maadhedi. 2017.Influence of irrigation periods and organic fertilizer on tow rice varieties grown under the rsystem of rice intensification (SRI). The Iraqi J. Agric.Sci. 48(3): 823-840

Al-Hilfy, I. H. H. and M. I. Flayyah. 2017.Response of two bread wheat varieties yield to mineral, bio-and organic fertilizers. Iraqi J. Agric. Sci. 48(6): 1661-1671

Al-Jubouri, 1997. Effect of Sowing Date And Harvesting On The Quality of Oil And It Is Component For Two Sesame Crop (Seamum indicum). Ph.D. Disservation, Coll. of Agric., Baghdad Univ

Aminpanah, H., 2013. Effect of nitrogen rate on seed yield, protein and oil content of two canola (Brassica napus L.) cultivars. Acta Agriculturae Slovenica, 101(2):183-190

Bvenura, C., and A.J. Afolayan, 2013. Growth and Physiological Response to Organic and/or Inorganic Fertilisers of Wild Solanum nigrum L.Cultivated Under Field Conditions in Eastern Cape Province, South Africa. Acta Agric.Scandinavica, Section B-Soil and Plant Sci. 63(8): 683-693

Cabral, F., Vasconselo, E., and M.D.S. Cordovil,1998. Effect of solid phase from pig slurry on iron, copper, zinc, and manganese content of soil and wheat plants. J. of Plant Nutrition, 21(9): 1955–1966

Cheema, M.A., M.A. Malik, A. Hussain, S.H. Shah, and S.M.A. Basra. 2001. Effects of time and rate of nitrogen and phosphorus application on the growht and seed and oil yields of canola (Brassica napus L.) J. Agron. Crop Sci. 186:103-110

Denčić, S., N. Mladenov and B. Kobiljski, . 2012. Effects of genotype and environment on breadmaking quality in wheat. – Interl. J. of plant production 5(1): 71-82.

Epstein E, and A.J Bloom . 2004. Mineral Nutrition of Plants: Principles and Perspectives 2sded. Sunderland, MA: Sinauer Associates, Inc. pp 402

Ferreira-Dias, Suzana, D. G. Valente and J. M. F. Abreu .2003. Comparison between ethanol and hexane for oil extraction from Quercus suber L. fruits. Grasasy Aceites 54 (4): 378-383

Gao, J., K.D. Thelen, D.H. Min, S. Smith, X.Hao, X. and R. Gehl,, 2010. Effects of manure and fertilizer applications on canola oil content and fatty acid composition. Agronomy Journal, 102(2), 790-797

Ghosh, P.K., K.K.Ajay., Bandyopadhyay, M.C., K.G.Manna, A.K.Mandal., and K.M.Hati. 2004. Comparative effectiveness of cattle manure, poultry manure, phospho-compost and fertilizer-npk on three cropping system in vertisols of semi-arid tropics. ii. dry matter yield, nodulation, chlorophyll content and enzymeactivity. Bioresource Technology, 95(1), 85-93

Hinsinger P. 2001. Bioavailability of soil inorganic P in the rhizosphere as affected by root-induced chemical changes: a review. Plant and Soil. 237(2):173–195

Holmes M.R.J. and A.M. Ainsley .1977. Fertiliser requirements of spring oilseed rape. J. Sci. Food Agric. 28(3): 301-311

Hossain, M. et al. 2005. The efficiency of nitrogen fertiliser for rice in Bangladeshi farmers. fields. Field Crops Res 93, 94–107

Iqbal, J., B. Hussain, M.F. Saleem, M.A. Munir and M. Aslam, 2008. Bio-economics of autumn planted sunflower (Helianthus annuus L.) hybrids under different NPK applications. Pak. J. Agric. Sci., 45:19-24

Kdidi, S., G.Vaca-Medina,, J. Peydecastaing, A. Oukarroum, N.Fayoud, A.Barakat,. .2019. Electrostatic separation for sustainable production of rapeseed oil cake protein concentrate: effect of mechanical disruption on protein and lignocellulosic fiber separation. Powder Technol. 344, 10–16

Kvasnička, F., B.Bıba,, Ševčı́k, R., M.Voldřich,. and J.Kratka, J. 2003. Analysis of the active components of silymarin. J.of Chromatography A. 990(1-2): 239-245

Martı´neza E, F.Domingo , A, Rosello´ , Serra J, Boixadera and J. Lloveras. 2017. The effects of dairy cattle manure and mineral N fertilizer on irrigated maize and soil N and organic. Europ. J. Agron.. 83: 78– 85

Mohammed A. A., J. M. Abbas and M. H. K. Al-Baldwin. 2020. Effect of plant source organic fertilizer on yield and its components of linseed cultivars. Iraqi J. Agric. Sci. (51) (Special Issue):86-95

Mortazavian, S. M., and Azizi-Nia, s. 2015. Nonparametric stability analysis in multi-environment trial of canola. Turkish J. of Field Crops. 19(1):108-117

Negahdar, L., A.D. AGonzalez-Quiroga, H. E. Otyuskaya., L. Toraman, J. T Liu., Jastrzebski, et al . 2016. Characterization and comparison of fast pyrolysis bio-oils from pinewood, rapeseed cake, and wheat straw using (13) C NMR and comprehensive GC x GC. ACS Sustain. Chem. Eng. 4: 4974–4985.

Pan, S.-g. et al. 2012. Effects of N management on yield and N uptake of rice in central China. J Integr Agric 11, 1993–2000, doi:10.1016/S2095-3119(12)60456-0

Rathke GW, T. Behrens and W. Diepenbrock . 2006. Integrated nitrogen management strategies to improve seed yield, oil content and nitrogen efficiency of winter oilseed rape (Brassica napus L.): a review. Agric Ecosyst Environ .117(2–3):80–108.

Rathke, G. W., Christen, O., and W. Diepenbrock, 2005. Effects of nitrogen source and rate on productivity and quality of winter oilseed rape (Brassica napus L.) grown in different crop rotations. Field crops research, 94(2-3), 103-113

Singh, V., S.S.Rathore, Singh, V. Singh and S. Singh,1997.Respones of some oil seed crops to potasslum. J. potasslum. Res. 13:148-162

Tawfiq, S. and S. Muhammed, 2014. Response of Three Cereal Crops to Different Clipping Times for Forage Yield at two Locations of Sulaimani Region', Zanko Sulaimani, 16

Tilman D, K.G,Cassman , P.A.Matson ,R. Naylor and S.Polasky. 2002. Agricultural sustainability and intensive production practices. Nature .418(6898):671–677

Viana, F.M.P., R.F. Kobory, W.Bettiol, and S.C. Athayde. 2000. Control of Damping-Off in bean plant caused by sclerotinia sclerotiorum by the incorporation of organic matter in the substrate. Summa Psychopathological. 26(1):94-97.

Walker, D.J., R.Clemente, and Bernal, M.P. 2004. Contrasting Effects of Manure and Compost on Soil pH, Heavy Metal Availability and Growth of Chenopodium album L. in a Soil Contaminated by Pyritic Mine Waste. Chemosphere, 57(3): 215-224

Wang XL, YY Ren, SQ Zhang, YL Chen and N Wang . 2017. Applications of organic manure increased maize (Zea mays L.) yield and water productivity in a semi-arid region. Agricu.Water Management.; 187: 88–98

Wang, Z.-W., M.Q. Zhu,M-F, Q. Wei, and R.-C.Sun, . 2019. Effects of hydrothermal treatment on enhancing enzymatic hydrolysis of rapeseed straw. Renew. Energy 134: 446–452.

XLSTAT version .2016. XLSTAT 2016. Data Analysis and Statistics with Microsoft Excel, Paris, France, MacOS ed

Yanar, D., N. Gebologlu, Y. Yanar., M.Aydin, andP. Cakmak, . 2011. Effect of different organic fertilizers on yield and fruit quality of indeterminate tomato (Lycopersicon esculentum). Scientific Research and Essays. 6(17):3623-3628

Yang, R.; L. Deng, L. Zhang; X. Yue.; J.Mao,; F. Ma,; X.Wang.; Q. Zhang; W. Zhang.; and P. Li, 2019. Comparative metabolomic analysis of rapeseeds from three countries. metabolites 2019, 9: 161

Yasari E and A.M. Patwardhan. 2006. Physiological analysis of the growth and devolvement of canola (Brassica napus L.). Asian J. Plant Sci. 5: 745-752

Zapata F and A.R. Zaharah . 2002. Phosphate availability from phosphate rock and sewage sludge as influenced by addition of water soluble phosphate fertilizers. Nutrient Cycling in Agroecosystems. (1) 63:43–48

Zhang, H., M. Xu, and F.Zhang, , 2009. Long-term effects of manure application on grain yield under different cropping systems and ecological conditions in China. The Journal of Agricultural Science, 147(1), p.31

Zhang, H.-c., X.-q.Wang, Daig., Z.Y. Huo,. and K. Xu. 2003. Effects of N-application rate on yield, quality and characters of nitrogen uptake of hybrid Rice Variety Liangyoupeijiu.J. Sci. Agric. Sin .7: 011.




How to Cite

S., S. H. . and Hama, S. J. . (2022) “EFFECT OF NPK AND ORGANIC FERTILIZERS ON YIELD AND SEED OIL CONTENT OF RAPESEED (Brassica napus L.)”, IRAQI JOURNAL OF AGRICULTURAL SCIENCES, 53(4), pp. 878–889. doi: 10.36103/ijas.v53i4.1600.