Effect of increasing spring doses of nitrogen on yield and oil content in seeds of oilseed rape (Brassica napus L.
Received: 2016 02 17 Accepted: 2016 03 11 Available online: 2016 05 30 dx.doi.org/10.15414/afz.2016.19.02.29 34 The aim of the experiment was monitoring importance of nitrogen in nutrition of oilseed rape Brassica napus L. as well as effect of rising doses of nitrogen on yield and oiliness of rapeseed. The plot scale experiment was based in years 2013 2014 and 2014 2015 in terms of agricultural cooperative in Mojmirovce. Hybrid Artoga was seeded. There were five treatments of fertilization and the block method of experimental plot size of 600 m 2 in triplicate was used in this experiment. The first treatment was unfertilized control treatment. Other treatments were fertilized by increasing doses of nitrogen 120 kg.ha 1 160 kg.ha 1 200 kg.ha 1 and 240 kg.ha 1 Yield of seed and oil content were greatly influenced by climatic conditions. Both experimental years were not equable in precipitation and temperatures. The highest average yield (at 12% moisture) 4.33 t.ha 1 was found at treatment where the dose of nitrogen 200 kg.ha 1 was used. It means an increase by 81.93% compared to unfertilized control treatment. The positive correlation between yield and doses of nitrogen was proved in this experiment. The highest average oil content 45.43% was reached at treatment 2. The negative correlation between oil content and dose of nitrogen was also confirmed in this experiment. Keywords: oilseed rape, nitrogen nutrition, yield, oil content References AHMAD, G. et al. (2007) Influence of nitrogen and sulfur fertilization on quality of canola Brassica napus L. under rainfed conditions. Journal of Zhejiang University vol. 8, no. 10, pp. 731 737. doi: http:/dx.doi.org/10.1631/jzus.2007.B0731 AMINPANAH, H. (2013) Effect of nitrogen rate on seed yield, protein and oil content of two canola Brassica napus L. cultivars. Acta agriculturae Slovenica vol. 101, no. 2, pp. 183 190. doi: http:/dx.doi.org/10.2478/acas 2013 0014 BALINT, T. and RENGEL, Z. (2008) Nitrogen efficiency of canola genotypes varies between vegetative stage and grain maturity. Euphytica vol. 164, no. 2, pp. 421 432. doi: http:/dx.doi.org/10.1007/s10681 008 9693 6 BALIK, J. et al. (1998) Nitrogen nutrition of winter oilseed rape. Agrochemia vol. 38, no. 3, pp. 11 13 (in Czech) BALIK, J. et al. (2006) The fluctuation of molybdenum content in oilseed rape plants after the application of nitrogen and sulphur fertilizers. Plant, Soil and Environment vol. 52, no. 7, pp. 301 307. BARLOG, P. and GRZEBISZ, W. (2004) Effect of timing and nitrogen fertilizer application on winter oilseed rape (Brassica napus L Journal of Agronomy and Crop Science vol. 190, no. 5, pp. 305 313. doi: http:/dx.doi.org/10.1111/j.1439 037X.2004.00108.x BUTTAR, G.S. THIND, H.S. and AUJLA, M.S. (2006) Methods of planting and irrigation at various levels of nitrogen affect the seed yield and water use efficiency in transplanted oilseed rape Brassica napus L. Agricultural water manage vol. 85, no. 3, pp. 253 260. doi: http:/dx.doi.org/10.1016/j.agwat.2006.05.008 DRECCER, M.F. et al. (2000) Comparative response of wheat and oilseed rape to nitrogen supply: absorption and utilisation efficiency of radiation and nitrogen during the reproductive stages determining yield. Plant Soil vol. 220, no. 1, pp. 189 205. doi: http:/dx.doi.org/10.1023/A:1004757124939 HASSAN, F.et al. (2007) Effects of sulphur on seed yield, oil, protein and glucosinolates of Canola cultivars. International Journal of Agriculture and Biology vol. 9, no. 3, pp. 504 508. http:/www.fspublishers.org/published_papers/86599_..pdf KARAASLAN, D. (2008) The effect of different nitrogen doses on seed yield, oil, protein and nutrient contents of spring rape. Pakistan Journal of Botany vol. 40, no. 2, pp. 807 813. http:/www.pakbs.org/pjbot/PDFs/40(2)/PJB40(2)807.pdf KAZEMEINI, S.A. HAMZEHZARGHANI, H. and EDALAT, M. (2010) The impact of nitrogen and organic mater on winter canola seed yield and yield components. Australian Journal of Crop Science vol. 4, no. 5, pp. 335 342. http:/www.cropj.com/kazemeini_3_5_2010_335_342.pdf LOZEK, O. and VARGA, L. (2008) Humix BOR effectiveness in fertilization of oilseed rape. Nase pole vol. 12, no. 4, pp. 34 (in Slovak) LOPEZ MOSQUERA, M. E. et al. (2015) Use of elemental sulphur as an acidifying soil amendment for Brassica napus cultivation. Spanish Journal of Soil Science vol. 5, no. 2, pp. 144 153.doi: http:/dx.doi.org/10.3232/SJSS.2015.V5.N2.04 MIRZASHAHI, K. PISHDARFARADANEH, M. and NOURGHOLIPOUR, F. (2010) Effects Different Rates of Nitrogen and Sulphur Application on Canola Yield in North of Khuzestan. Journal of Research in Agricultural Science vol. 6, no. 2, pp. 107 112. URL:http:/journals.khuisf.ac.ir/jfanp/files/site1/user_files_f324ff/admin A 10 1 71 6c57add.pdf NARITS, L. 2010. Effect of nitrogen rate and application time to yield and quality of winter oilseed rape Brassica napus L. var. oleifera subvar. biennis Agronomy Research vol. 8, no. 3, pp. 671 686. http:/agronomy.emu.ee/vol08Spec3/p08s321.pdf ORLOVIUS, K. and KIRGBY, E.A. (2003) Fertilizing for High Yield and Quality Oilseed rape Zug: International Potash Institute. OZTURK, O. (2010) Effects of source and rate of nitrogen fertilizer on yield, yield components and quality of winter rapeseed. Chilean Journal of Agricultural Research vol. 70, no. 1, pp. 132 141. doi: http:/dx.doi.org/10.4067/S0718 58392010000100014 RATHKE, G.W. BEHRENS, T. and DIEPENBROCK, W. (2006) Integrated nitrogen management strategies to improve seed yield, oil content and nitrogen efficiency of winter oilseed rape Brassica napus L. Agriculture, Ecosystems and Environment vol. 117, pp. 80 108. doi: http:/dx.doi.org/10.1016/j.agee.2006.04.006 RATHKE, G.W. CHRISTEN, O. and DIEPENBROCK, W. (2005) Effects of nitrogen sources and rate on productivity and quality of winter oilseed rape Brassica napus L. grown in different crop rotation. Field Crops Research vol. 94, no. 2 33, pp. 103 113. doi: http:/dx.doi.org/10.1016/j.fcr.2004.11.010 RATHKE, G. W. and SCHUSTER, C. (2001) Yield and quality of winter oilseed rape related to nitrogen supply. In: HORST, W.J. et al. (eds. Plant Nutrition Food Security and Sustainability of Agro ecosystems through Basic and Applied Research Dodrecht: Kluwer Academic Publishers. SIELIG, K. BRASE, T. and SVIB, V. (2006) Residual effects of different N fertilizer treatments on growth, N uptake and yield of oilseed rape, wheat and barley. European Journal of Agronomy vol. 25, no. 1, pp. 40 48. SOCIETAS PEDOLOGICA SLOVACA (2014) Morphogenetic soil classification system of Slovakia. Basal reference taxonomy. Bratislava: NPPC VUPOP Bratislava, 96 p. (in Slovak) VARGA, P. and DUCSAY, L. (2011) Optimalization of fertilization oilseed rape winter form (Brassica napus L. by nitrogen, sulphur and boron Nitra: SPU, 83 p. (in Slovak) VARGA, P. et al. (2011) Effect of increasing doses of boron on yield of oilseed rape Brassica napus L. Agrochemia vol. 51, no. 2, pp. 27 31. (in Slovak) WALTON, G. SI, P. and BOWDEN, B. (1999) Environmental impact on canola yield and oil. [Online] Retrieved February 05, 2016 from http:/www.regional.org.au/au/gcirc/2/136.htm#TopOfPage