The Response of Wheat to Foliar Application of Humic Acid and Nanochitosan under Dryland Condition

Articles in Press

Document Type : Research Paper

Authors

1 M.Sc. Student in agroecology, Department of Production Engineering and Plant Genetics, Razi University

2 Associated professor, Department of Production Engineering and Plant Genetics, Razi University

10.22034/saps.2025.67989.3380

Abstract

Since foliar application of biostimulants and organic matter can affect the yield and yield components of important crops such as wheat, this study carried out to investigate the response of wheat to foliar application of humic acid and nano chitosan under dryland conditions. The experiment was conducted as factorial in a randomized complete block design with three replications on Hashtrood bread wheat cultivar during 2023-2024 growing season. The experimental factors included foliar spraying of humic acid at three concentrations (0 as control, 5, and 10 g/L) and chitosan nanoparticles at three concentrations (0 as control, 250, and 500 ppm). The plants were sprayed with the mentioned factors in stem elongation and flowering stages. The results showed that humic acid and nano-chitosan application caused the increasing in wheat growth and yield related traits including plant height, number of spikes, number of grains per spike, 1000-grain weight, grain yield, catalase activity, and relative water content of leaves compared to the control treatment. A significant interaction of humic acid × nano-chitosan was observed for flag leaf area and ascorbate peroxidase enzyme activity. The highest grain yield was related to application of 10 g/l humic acid (2480.77kg/ha) and 500 ppm nano-chitosan (2480.77 kg/ha) that increased by 1.03% and 1.06% compared to the control treatment respectively. Yield increasing can be due to the improvement of leaf area and the tracking of the highest amount of light and relative water content of the leaf,

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Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 22 July 2027

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