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Plant Science Today (PST)

Research Articles

Early Access

Effect of soil amendments and nano and conventional nitrogen on potato yield and tuber quality

DOI
https://doi.org/10.14719/pst.13607
Submitted
9 January 2026
Published
22-04-2026

Abstract

Soil amendments improve the chemical and fertility properties of soil, such as soil pH and cation exchange capacity and chelate nutrients, especially nitrogen, thereby preventing their loss through leaching or volatilisation. A field trial was conducted during the spring growing season of 2025 in soil with a silty loam texture to evaluate the effects of soil amendments, namely zeolite, perlite, palm frond residues and palm frond biochar in combination with different levels were symbolised as A1, A2, A3, A4 and A0 respectively, and forms of nitrogen (100 % conventional urea), (50 % conventional urea), (100 % nano nitrogen) and (50 % nano nitrogen) which were symbolised as N1, N2, N3, N4 and N0 respectively. The study aimed to assess several yield and quality parameters of potato using a randomised complete block design (RCBD) with 3 replicates (75 experimental units). Statistical analysis revealed that biochar produced the highest mean values for dry matter percentage, starch percentage in tubers, average weight of marketable tuber and marketable yield, with values of 18.40 %, 12.40 %, 112.98 g tuber-1 and 42.592 mg ha-1 respectively. Palm frond residues resulted in the highest protein percentage (11.43 %). The nitrogen treatment with 100 % nano nitrogen produced the highest average dry matter percentage, starch percentage and protein percentage in tubers, average weight of marketable tuber and marketable yield (19.28 %, 13.18 %, 15.40 %, 119.30 g tuber-1 and 47.777 mg ha-1 respectively). Overall, the results demonstrated the superiority of biochar and nano-nitrogen treatments.

References

  1. 1. Wang D, Li S, Sun X, Hao D, Li Y, Wang H. Effects of compost application of green waste on soil properties: A meta-analysis. Sustainability. 2024;16(20):8877. https://doi.org/10.3390/su16208877
  2. 2. Shaker AHJA, Al-Bahrani AQM. Effect of bio-enhancer, zeolite, and mineral fertilizer application on the availability of N, P, and K in soil after potato harvest. Iraqi J Soil Sci. 2022;22:65–75.
  3. 3. Al-Hayani AS, Sallume MO. Effect of humic acid and the level of nano and conventional nitrogen on the available and absorbed nitrogen element and potato yield. IOP Conf Ser Earth Environ Sci. 2023;1225:012002. https://doi.org/10.1088/1755-1315/1225/1/012002
  4. 4. Choi I, Chun J, Choi HS, Park J, Kim NG, Lee SK, et al. Starch characteristics, sugars and thermal properties of processing potato cultivars developed in Korea. Am J Potato Res. 2020;97:308–17. https://doi.org/10.1007/s12230-020-09779-z
  5. 5. Ali NDS, Al-Jumaili AAR, Rahi HS. Soil fertility. Baghdad (IQ): Dar Al-Kutub Al-Ilmiyah for Printing and Publishing, College of Agriculture, University of Baghdad; 2014.
  6. 6. Al-Hadithi IK, Al-Kubaisi AM, Al-Hadithi YK. Modern irrigation technologies. Baghdad (IQ): Ministry of Higher Education and Scientific Research, College of Agriculture, University of Anbar; 2010.
  7. 7. Nielsen SS. Food analysis. 5th ed. Cham: Springer; 2017. p. xx + 649. https://doi:10.1007/978-3-319-45776-5
  8. 8. AOAC International. Official methods of analysis. 17th ed. Gaithersburg (MD): Association of Official Analytical Chemists; 2000.
  9. 9. Stark JC, Love SL, editors. Potato production systems. Cham: Springer; 2020. p. ix + 635. https://doi:10.1007/978-3-030-39157-7
  10. 10. Dawerasha SS, Nebiyu A, Ahmed M, Haile B. Effect of coffee husk biochar and inorganic NP fertilizer on soil properties, growth and yield of potato (Solanum tuberosum L.) on acidic soil of southwest Ethiopia. CABI Agric Biosci. 2024;5(1):56. https://doi.org/10.1186/s43170-024-00261-y
  11. 11. Gopika KT, Isaac SR, Pillai PS, Usha C. Yield and quality in Chinese potato as influenced by reduced tillage and nano nitrogen fertilization. Int J Res Agric. 2024;7:349–52. https://doi.org/10.33545/2618060X.2024.v7.i3e.422
  12. 12. Al-Zahrani HS, Khan KJ, Al-Amri SA, Al-Zahrani HS, Rady MM. Synergistic effect of biochar and nano-nitrogen fertilizers on improving growth, tuber yield, and quality of potato (Solanum tuberosum L.). J King Saud Univ Sci. 2022;34(4):102008.
  13. 13. Mohammed DA, Sarheed BR. The role of biochar in phosphorus concentration in potato plants. IOP Conf Ser Earth Environ Sci. 2024;1371:082003. https://doi.org/10.1088/1755-1315/1371/8/082003
  14. 14. Abhiram G. Contributions of nano-nitrogen fertilizers to sustainable development goals: A comprehensive review. Nitrogen. 2023;4:397–415. https://doi.org/10.3390/nitrogen4040028
  15. 15. Zhang M, Mukhamed B, Yang Q, Luo Y, Tian L, Yuan Y, et al. Biochar and nitrogen fertilizer change the quality of waxy and non-waxy broomcorn millet (Panicum miliaceum L.) starch. Foods. 2023;12(16):3009. https://doi.org/10.3390/foods12163009
  16. 16. Raj H, Duhan DS, Verma A. Enhancing growth and nutrient use efficiency in potato (cv. Kufri Pushkar) through nano urea and zinc sulfate application in Haryana, India. Int J Plant Soil Sci. 2024;36(11):319–26. https://doi.org/10.9734/ijpss/2024/v36i115147
  17. 17. Menajid MH, Sarheed BR, Sallume MO. Effect of organic residues source and NPK levels on some soil properties and yield of sunflower (Helianthus annuus L.). Int J Agric Stat Sci. 2021;17(1):1–10.
  18. 18. Hamad YA, Sallume MO. The effect of spraying organic acids, nano and traditional iron in the growth and yield of the mung bean (Vigna radiata L.). Int J Agric Stat Sci. 2021;17(2):831–36.
  19. 19. Al-Hayani AS, Sallume MO. Effect of humic acid and the level of nano and traditional nitrogen on the growth and yield of potato. IOP Conf Ser Earth Environ Sci. 2023;1213:012014. https://doi.org/10.1088/1755-1315/1213/1/012014
  20. 20. Al-Fadlay JTM, Al-Khadimy NAS. Effect of organic fertilizer sources and levels of mineral fertilizers on total tuber yield and N, P, and K concentration in potato (Solanum tuberosum L.) tubers. J Kerbala Agric Sci. 2018;5(5):89–99.
  21. 21. Mohammed DA, Sarheed BR. The role of biochar and phosphorus in the growth and yield of potatoes. IOP Conf Ser Earth Environ Sci. 2023;1252:012075. https://doi.org/10.1088/1755-1315/1252/1/012075
  22. 22. Wilkinson S, Weston AK, Marks DJ. Stabilising urea amine nitrogen increases potato tuber yield by increasing chlorophyll content, reducing shoot growth rate and increasing biomass partitioning to roots and tubers. Potato Res. 2020;63:217–39. https://doi.org/10.1007/s11540-019-09436-x
  23. 23. Madzokere TC, Murombo LT, Chiririwa H. Nano-based slow releasing fertilizers for enhanced agricultural productivity. Mater Today Proc. 2021;45:3709–15. https://doi.org/10.1016/j.matpr.2020.11.090
  24. 24. Hamza A, Maala M. Effect of adding different levels of biochar on soil nitrogen and phosphorus content and plant growth. Tishreen Univ J Res Sci Stud Biol Sci Ser. 2021;43(4):115–28.

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