Impact of mineral nutrients on powdery mildew and quality attributes in umran ber (Ziziphus mauritiana)

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  • HARSIMRAT K BONS Punjab Agricultural University, Ludhiana, Punjab 141 004, India
  • KULWINDER SINGH Punjab Agricultural University, Ludhiana, Punjab 141 004, India


Boric acid, Fruit drop, Powdery mildew, Potassium sulphate, Quality attributes


An experiment was conducted at the Fruit Research Farm of Punjab Agricultural University, Ludhiana, Punjab during 2019–20 to study the impact of mineral nutrients on fruit drop, powdery mildew and quality attributes of ber (Ziziphus mauritiana Lam.) cv. Umran. A 15 year’s old ber plants were sprayed with nutrients like calcium nitrate @0.25 and 0.50%; potassium sulphate @0.25 and 0.50%; boric acid @0.40 and 0.60% and liquid sulphur @0.25 and 0.50% along with control (water spray) during mid-November, mid-December and mid-January (2019–20). Fruit drop and powdery mildew incidence was recorded periodically from November-March. Ber fruits were analysed for physical and bio-chemical parameters after harvesting. Among all the foliar applications, potassium sulphate @0.50% resulted in minimum fruit drop (65.52%). Maximum fruit length (4.86 cm), fruit diameter (3.06 cm), pulp content (93.96%) and fruit colour values (59.50, -4.0 and 33.46) was also recorded in potassium sulphate applied @0.50%. Maximum TSS (15.63 0B), TSS/acid ratio (120.23), ascorbic acid content (110.25 mg/100 g), total sugars (12.70%), reducing sugars (5.75%), non-reducing sugars (6.60%) and minimum titrable acidity (0.130%) was recorded with boric acid @0.60% which was statistically at par with potassium sulphate @0.50%. However, minimum incidence of powdery mildew was observed in liquid sulphur (0.50%) followed by potassium sulphate (0.50%). From the present studies, it is concluded that 3 foliar applications of potassium sulphate @0.50% resulted in improved quality attributes, reduction in fruit drop as well as reduced incidence of powdery mildew in ber cv. Umran.


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Anonymous. 2019. National Horticulture Board

Anonymous. 2021. Package of Practices for Cultivation of Fruits, pp. 1. Punjab Agricultural University, Ludhiana, India.

AOAC. 2005. Official Methods of Analysis, 18th edn. Association of Official Analytical Chemists, Washington DC.

Baranwal D, Tomar S, Singh J P and Maurya J K. 2017. Effect of foliar application of zinc and boron on fruit growth, yield and quality of winter season guava (Psidium guajava L.). International Journal of Current Microbiology and Applied Sciences 6(9): 1525–29. DOI:

Choudhary M, Ghasolia R P, Bajaya T and Shivran M .2020 (a). Efficacy of natural products and fungicides against powdery mildew of ber. International journal of chemical studies 8(2): 913–15. DOI:

Choudhary R B, Bairwa L N, Garhwal O P and Negi P. 2020(b). Effect of plant growth regulators and nutrients on yield attributing characters and yield of ber (Zizyphus mauritiana Lamk.) cv. Gola. International Journal of Pharmacognosy and Phytochemical Research 9(4): 1968–72.

Gill P P S, Ganaie M Y, Dhillon W S and Singh N P. 2012. Effect of foliar application of potassium on fruit size and quality of Patharnakh pear. Indian Journal of Horticulture 69(4): 512–16.

Hossain M A and Rahman S M M. 2011. Total phenolics, flavonoids and antioxidant activity of tropical fruit pineapple. Food Research International 44: 672–76. DOI:

Kassem H A, Al-Obeed R S, Ahmed M A and Omar A K H. 2011. Productivity, fruit quality and profitability of jujube trees improvement by pre harvest application of agro-chemicals. Middle-East Journal of Scientific Research 9(5): 628–37.

Kumar G N K, Vani V S, Rao A V D D, Subbaramamma and Sujatha R V. 2017. Effect of foliar sprays of urea, potassium sulphate and zinc sulphate on quality of guava cv. Taiwan pink. International journal of chemical studies 5(5): 680–82.

Majumder I, Sau S, Ghosh B, Kundu S, Roy D and Sarkar S. 2017. Response of growth regulators and micronutrients on yield and physico-chemical quality of Ber (Zizyphus mauritiana Lamk.) cv. BAU Kul-1. Journal of Applied and Natural Science 9(4): 2404–09. DOI:

Pareek S and R S Dhaka. 2008. Association analysis for quality attributes in ber. Indian Journal of Horticulture 3: 77–80.

Pareek S, Kitinoja L, Kaushik R A and Paliwal R. 2009. Postharvest physiology and storage of ber. Journal of Food Composition and Analysis 5(5): 1–10. DOI:

Singh C and Bal J S. 2006. Effect of nutrients and growth regulators on fruit drop, size and yield of ber (Zizyphus mauritiana Lamk.). International Journal of Agricultural Sciences 2: 358–60.

Su X, Bai C, Wang X, Liu H Zhu Y, Wei L, Cui Z and Yao L. 2022. Potassium sulphate spray promotes fruit colour preference via regulation of pigment profile in Litchi pericarp Frontiers in Plant Science 13: 925609. doi: 10.3389/fpls.2022.925609 DOI:

Thind S K and Kaur N. 2006. Management of ber powdery mildew with fungicides. Indian Journal of Horticulture 63(3): 267–69.

Yadav H C, Yadav A L, Yadav D K and Yadav P K. 2011. Effect of foliar application of micronutrients and GA3 on fruit yield and quality of rainy season guava (Psidium guajava L.) cv. L-49. Plant Archives 11(2): 147–49.

Yadav D, Singh S P and Singh S. 2014. Effect of foliar application of potassium compounds on yield and quality of Ber (Zizyphus mauritiana L.) cv. Banarasi Karaka. International journal of natural and social sciences 2(2): 89.

Zeraatgar H, Davarynejad G H, Moradinezhad F and Abedi B. 2018. Effect of salicylic acid and calcium nitrate spraying on qualitative properties and storability of fresh jujube fruit (Ziziphus jujube Mill.). Notulae Botanicae Horti Agrobotanici Cluj-Napoca 46(1): 138–47. DOI:









How to Cite

BONS, H. K., & SINGH, K. (2022). Impact of mineral nutrients on powdery mildew and quality attributes in umran ber (Ziziphus mauritiana). The Indian Journal of Agricultural Sciences, 92(11), 1316–1320.