Impact of Biosynthesized Zinc Oxide Nanoparticles (ZnONPs) and Humic Acid Derived from Compost on the Chemical Composition and Yield of Japanese Cabbage Irrigated with Salinized Water

Document Type : Original Article

Authors

1 Soil and Water use Dept., National Research Centre

2 Vegetable Research Dept., National Research Centre, Dokki, Giza, Egypt

3 Vegetable Research Dept., National Research Centre, Dokki

4 Soils and Water Use Dept., National Research Centre, Dokki, Giza, Egypt

5 Plant Nutrition Dept., National Research Centre, Dokki, Giza, Egypt

Abstract

The current study examined the effects of foliar application of humic acid (2 and 3 cm3 L-1) and zinc oxide nanoparticles (25, 50, and 100 mg L-1) on the productivity, and chemical composition of Japanese cabbage under saline water irrigation during two consecutive seasons in 2022 and 2023 at the Research and Production Station, National Research Centre, El-Nubaria location, Beheara Governorate, Delta Egypt.

The findings show that applying ZnONPs spray, particularly the second concentration (50 mg L-1), enhanced the growth and yield characteristics of Japanese cabbage plants, particularly when combined with a greater humic acid concentration (3 cm3 L-1). Also, the leaf content of nutrients improved significantly as a result of spraying ZnONPs and humic acid, as the highest values were obtained for most nutrients as a result of spraying the second concentration of both humic acid and ZnONPs.

Since they lessened the impact of saline water and increased cabbage productivity, it can be concluded that both humic acid and ZnONPs can be used as a safe tool to improve the productivity, and chemical composition of cabbage under saline irrigation settings.

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Articles in Press, Accepted Manuscript
Available Online from 02 October 2025
  • Receive Date: 28 June 2025
  • Revise Date: 25 September 2025
  • Accept Date: 02 October 2025