Effect of nitrogen fertilization levels and plant density on dry weight, yield components and bulb quality of onion plant


  • Ehab ATTAYA Zagazig University, Faculty of Agriculture, Horticulture Department, Zagazig, 44511 (EG)
  • Abd-Allah BARDISI Zagazig University, Faculty of Agriculture, Horticulture Department, Zagazig, 44511 (EG)
  • Ali OSMAN Zagazig University, Faculty of Agriculture, Biochemistry Department, Zagazig, 44511 (EG)
  • Hany ISMAIL Zagazig University, Faculty of Agriculture, Horticulture Department, Zagazig, 44511 (EG)
  • Khairiah M. ALWUTAYD Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671 (SA)
  • Wasimah B. AL-SHAMMARI University of Hail, College of Science, Department of Biology, P.O. Box 2440, Hail 55476 (SA)
  • Nadi A. AL-HARBI University of Tabuk, University College of Tayma, Biology Department, P.O. Box 741, Tabuk (SA)
  • Salem M. AL-QAHTANI University of Tabuk, University College of Tayma, Biology Department, P.O. Box 741, Tabuk (SA)
  • Sabreen IBRAHEM Zagazig University, Faculty of Agriculture, Horticulture Department, Zagazig, 44511 (EG)
  • Khaled ABDELAAL Kafrelsheikh University, EPCRS Excellence Center, Plant Pathology and Biotechnology Laboratory, Faculty of Agriculture, Agricultural Botany Department, 33516 (EG)




bulb quality, mineral nitrogen levels, onion, plant density, yield


A field experiment was carried out during the two successive winter seasons of 2020/2021 and 2021/2022 to study the effect of mineral nitrogen levels and plant density on dry weight, yield and its components, as well as bulb quality of onions (cv. ‘Ahmar Tanawy’). This experiment included 12 treatments, which were combinations between four levels of mineral nitrogen (0, 192, 240 and 288 kg N/ha) and three plant densities (4, 5 and 6 rows/ridge equal 33.33, 41.67 and 50 plants/m2, respectively). These treatments were arranged in a split-plot design with three replications. Nitrogen levels were randomly arranged in the main plots, and plant densities were randomly distributed in the subplots. Nitrogen application at 192,244 and 288 kg N/ha led to increase dry weight/plant compared to control (zero N) and 288 kg N/ha gave the highest values of dry weight of leaves, dry weight of bulbs, and total dry weight per plant at 100 days in both seasons. The increases in total dry weight per plant were about 4.84 and 4.80 g per plant for 192 kg N/ha, 4.76 and 3.87 g per plant for 244 kg N/ha, and 6.86 and 5.74 g per plant for 288 kg N/ha over the control at 100 days in the 1st and 2nd seasons, respectively. The interaction between N at 288 kg/ha and low plant density (4 rows/ridge) gave the highest values of dry weight of leaves, bulb, and total dry weight/plant and increased yield of grade 1, exportable yield, average bulb weight, as well as nitrate and sulphur contents in bulbs, whereas the interaction between N at 244 kg/ha and high plant density (6 rows/ridge) increased grades 2, 3, and 4, marketable yield, and total yield/ha.


Abbey L, Kanton R (2004). Fertilizer type, but not time of cessation of irrigation, affect onion development and yield in a semi-arid region. Journal of Vegetable Crop Production 9(2):41-48. https://doi.org/10.1300/J068v09n02_06

Abd El-Wahed A (2008). Evaluation of growth characters, productivity, quality, and storability of some onion (Allium cepa L.) cultivars planted at different densities under Al-Akhdar conditions. M.Sc. Thesis, Hort. Dept., Fac. Agric., Omar Al-Mokhtar University, Libia.

Abdel-Mawgoud AMR, Abou-Hussein SD, Salman SR, El-Nemr MA (2005). Interactive effects of zinc and different nitrogen sources on yield and quality of onion. Arab Universities Journal of Agricultural Sciences 13(3):863-875. https://doi.org/10.21608/ajs.2005.15325

Aboukhadrah S, El-Alsayed AWAH, Sobhy L, Abdelmasieh W (2017). Response of onion yield and quality to different planting date, methods and density. Egyptian Journal of Agronomy 39(2):203-219. https://doi.org/10.21608/agro.2017.1203.1065

Alharbi K, Haroun SA, Kazamel AM, Abbas MA, Ahmaida SM, AlKahtani M, … Gamel RME (2022). Physiological studies and ultrastructure of Vigna sinensis L. and Helianthus annuus L. under varying levels of nitrogen supply. Plants 11(14):1884. https://doi.org/10.3390/plants11141884

Aliyu U, Dikko A, Magaji M, Singh A (2008). Nitrogen and intra-row spacing effects on growth and yield of onion (Allium cepa L.). Journal of Plant Sciences 3(3):188-193.‏

Atalay D, Alemayehu M, Ayana D (2022). Effects of intra-row spacing and nitrogen fertilizer rates on growth, and yield of onion (Allium cepa L.) under irrigation in mecha district of Amhara, Ethiopia. International Journal of Bioorganic Chemistry 7(1):17. https://doi.org/10.11648/j.ijbc.20220701.13

Bardisi S (2013). Effect of some agricultural treatments on the productivity, quality and storability of onion grown in sandy soil. M.Sc. Thesis, Fac. Agric., Zagazig University.

Brewster JL (2008). Onions and other vegetable alliums. Vol. 15. CABI. https://doi.org/10.1079/9781845933999.0000

Cataldo DA, Haroon M, Sharderand LE, Youn VL (1975). Rapid colorimetric determination of nitrate in plant tissues by nitrification of salicylic acid comm. Soil Science and Plant Analysis 6:71-80.‏ http://dx.doi.org/10.1080/00103627509366547

Charrondière UR, Stadlmayr B, Rittenschober D, Mouille B, Nilsson E, Medhammar E, … Ebanks K (2013). FAO/INFOODS food composition database for biodiversity. Food Chemistry 140(3):408-412. https://doi.org/10.1016/j.foodchem.2012.08.049

Dawar NM, Wazir FK, Dawar M, Dawar SH (2007). Effect of planting density on growth and yield of onion varieties under climatic conditions of Peshawar. Sarhad Journal of Agriculture 23(4):911.

Duncan DB (1958). Multiple Range and Multiple F-Test. Biometrics 11:1-5. https://doi.org/10.2307/3001478

El-Sharkawy AF, Mostafa AK, Maksoad HA (2006). Effect of alternate furrow irrigation and transplanting distance on water utilisation efficiency for onion crop. Misr Journal of Agricultural Engineering 23:137-150.‏ http://dx.doi.org/10.4067/SO718-58392013000200014

Galal A, Basahi M, Shabana MT, Abdelaal Kh, Abdel-Hafez AG (2023). Studies on combining ability in triticale under nitrogen levels. Fresenius Environmental Bulletin 32(1):241-249.

Gebretsadik K, Dechassa N (2018). Response of onion (Allium cepa L.) to nitrogen fertilizer rates and spacing under rain fed condition at Tahtay Koraro, Ethiopia. Scientific Reports 8(1):9495. https://doi.org/10.1038/s41598-018-27762-x

Geisseler D, Ortiz RS, Diaz J (2022). Nitrogen nutrition and fertilization of onions (Allium cepa L.)–A literature review. Scientia Horticulturae 291:110591. https://doi.org/10.1016/j.scienta.2021.110591

Geries L (2013). Effect of nitrogen fertilizer and foliar spraying with humic acid on growth and yield of onion (Allium cepa L.). Egypt Journal of Applied Science 28(4):204-226.

Gessesew WS, Woldetsadik K, Mohammed W (2015). Growth parameters of onion (Allium cepa L. var. cepa) as affected by nitrogen fertilizer rates and intra-row spacing under irrigation in Gode, South-Eastern Ethiopia. Agriculture, Forestry and Fisheries 4(6):239-245.‏ http://dx.doi.org/10.11648/j.aff.20150406.11

Halvorson AD, Bartolo ME, Reule CA, Berrada A (2008). Nitrogen effects on onion yield under drip and furrow irrigation. Agronomy Journal 100(4):1062-1069. https://doi.org/10.2134/agronj2007.0377

Jayathilake P, Reddy I, Srihari D, Neeraja G, Reddy R (2002). Effect of nutrient management on growth, yield and yield attributes of rabi onion (Allium cepa L.). Vegetable Science 29(2):184-185. https://doi.org/10.5958/0976-0547.2015.00056.7

Ketter CAT, Randle WM (1998). Pungency assessment in onions. Proceedings of the 19-workshop conference of the Association for Biology Laboratory Education (ABLE) 19:177-196.

Khan MA, Hasan MK, Miah MAJ, Alam MM, Masum AS (2003). Effect of plant spacing on the growth and yield of different varieties of onion. Pakistan Journal of Biological Sciences 6(18):1582-1585.‏ https://doi.org/10.3923/pjbs.2003.1582.1585

Loredana L, Giuseppina A, Filomena N, Florinda F, Marisa DM, Donatella A (2019). Biochemical, antioxidant properties and antimicrobial activity of different onion varieties in the Mediterranean area. Journal of Food Measurement and Characterization 13:1232-1241. https://doi.org/10.1007/s11694-019-00038-2

Meena A, Paliwal R, Meena KJ (2015). Effect of organic manures and bio-fertilisers on growth and quality attributes of kharif onion (Allium cepa L.) in semi-arid region. Indian Research Journal of Genetics and Biotechnology 7(01):73-76.

Mohamed A, Elkhoby W, Abdo I, Al-Harbi N, Al-Qahtani S, Abdelaal Kh (2023). Effect of two sowing methods and some compound fertilizers on rice growth, yield and yield components. Fresenius Environmental Bulletin 32(1):345-350.

Mohamed A, Mazrou Y, Al-Shammari W, El-Shamy M, EL-Kholy K, Abdelaal Kh (2022). Impact of intercropping faba bean with onion, garlic and fenugreek on crop productivity and control of Orobanche crenata. Fresenius Environmental Bulletin 31(8):7596-7603.

Mosalem M, Mazrou Y, Badawy Sh, Abd Ullah MA, Mubarak MGh, Hafez YM, Abdelaal Kh (2021). Evaluation of sowing methods and nitrogen levels for grain yield and components of durum wheat under arid regions of Egypt. Romanian Biotechnology Letters 26(6):3031-3039. https://doi.org/10.25083/rbl/26.6/3031-3039

Mutetwa M, Mtaita T (2014). Effects of mulching and fertilizer sources on growth and yield of onion. Journal of Global Innovations in Agricultural Sciences 2(3):102-106. https://doi.org/10.17957/JGIASS/2.3.561

Novozamsky I, Van Eck R (1977). Total sulphur determination in plant material. Fresenius' Zeitschrift fur analytische Chemie 286: 367-368.‏ https://doi.org/10.1007/BF00431199

Omar A, AboYoussef M, Shoughy A, Abd El-Aty MS, Abdelaal Kh, Hafez Y, Kamara M (2022). Response of Egyptian Yasmin rice cultivar to different seeding number per hill and different nitrogen levees. Fresenius Environmental Bulletin 31(1A):1258-1265.

Omar AE, Al-Khalaifah HS, Mohamed WA, Gharib HS, Osman A, Al-Gabri NA, Amer S (2020). Effects of phenolic-rich onion (Allium cepa L.) extract on the growth performance, behavior, intestinal histology, amino acid digestibility, antioxidant activity, and the immune status of broiler chickens. Frontiers in Veterinary Science 7:582612. https://doi.org/10.3389/fvets.2020.582612

Priyadarshini A, Rajauria G, O'Donnell CP, Tiwari BK (2019). Emerging food processing technologies and factors impacting their industrial adoption. Critical Reviews in Food Science and Nutrition 59(19):3082-3101. https://doi.org/10.1080/10408398.2018.1483890

Ragab AY, Geries LSM, Abdelaal KAA, Hanna SA (2019). Growth and productivity of onion plant (Allium cepa L.) as affected by transplanting method and NPK fertilization. Fresenius Environmental Bulletin 28(11): 7777-7786.

Resende GM, Costa ND (2005). Yield characteristics and postharvest conservation of onion under different planting spacing. Horticultura Brasileira 23:707-711.‏ https://doi.org/10.1590/S0102-05362005000300003

Singh A, Ram R (2014). Evaluation of the performance of onion cv. NHRDF red 2 in response to inorganic, organic and bio-fertilizers. India Journal of Applied Research 4(11):263-265.

Snedecor GW, Cochran WG (1980). Statistical Methods. 7th ed., Iowa State University Press, Iowa, USA. pp 593.

Woldetsadik K (2003). Shallot (Allium cepa var. ascolonicum) responses to plant nutrients and soil moisture in a sub-humit tropical climate. Acta Universitatis Agriculturae Sueciae. Agraria 2003:367.

Yahaya Y, Uauri UA, Bagudo BU (2010). Study of nutrient content variation in bulb and stalk of onions (Allium cepa) cultivated in Aliero, Aliero, Kebbi State, Nigeria. Nigerian Journal of Basic and Applied Sciences 18(1):83-89.‏

Zalat S, EL-Sayed A, Elkhoby R, Hafez Y, Ali E, Abdelaal Kh (2021). Effect of method and time of micronutrients application on sugar beet productivity under two nitrogen fertilizer sources. Fresenius Environmental Bulletin 30(7A):9135-9141.

Zhao X-X, Lin F-J, Li H, Li H-B, Wu D-T, Geng F, Ma W, Wang Y, Miao B-H, Gan R-Y (2021). Recent advances in bioactive compounds, health functions, and safety concerns of onion (Allium cepa L.). Frontiers in Nutrition 8:669805. https://doi.org/10.3389/fnut.2021.669805




How to Cite

ATTAYA, E., BARDISI, A.-A., OSMAN, A., ISMAIL, H., ALWUTAYD, K. M., AL-SHAMMARI, W. B., AL-HARBI, N. A., AL-QAHTANI, S. M., IBRAHEM, S., & ABDELAAL, K. (2024). Effect of nitrogen fertilization levels and plant density on dry weight, yield components and bulb quality of onion plant. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 52(1), 13294. https://doi.org/10.15835/nbha52113294



Research Articles
DOI: 10.15835/nbha52113294

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