The effect of foliar application of nano-iron and zinc oxide on grain yield, photosynthetic pigment content and some agrophysiological traits of pinto bean cultivars

Articles in Press

Document Type : Research Paper

Authors

University of Mohaghegh Ardabili, Ardabil, Iran University street

10.22034/saps.2025.66865.3359

Abstract

Objectives: The aim of this study was to investigate the effects of foliar application of iron and zinc nanoparticles on seed yield, photosynthetic pigment content, and some agro-physiological traits of three common bean cultivars.

Materials and Methods: The experiment was conducted as a split-plot design within a completely randomized block design with three replications in the village of Balasjin, Sarab, during the 2022-2023 agricultural year. The treatments included three common bean cultivars (local Sarab, Talash, and Uzbek) as the main factor and four levels of foliar application (control (water spray as control), iron oxide nanoparticles (at a concentration of one gram per liter), zinc oxide nanoparticles (at a concentration of one gram per liter), and combined foliar application of iron and zinc oxide nanoparticles (at a concentration of one gram per liter)) as the sub-factor.

Results: Foliar application of iron and zinc nanoparticles increased leaf and seed total chlorophyll, carotenoid content, seed and leaf protein content, amounts of iron and zinc in seeds,, and seed yield. The highest values for total chlorophyll, carotenoid content, number of seeds per plant, number of pods per plant, and hundred-seed weight (4.153 mg per gram fresh weight, 0.466 mg per gram fresh weight, 34.333, 7.434, and 40.223 g, respectively) were observed in the local, Talash, and Uzbek genotypes, respectively.
Conclusions: Foliar application of iron and zinc nanoparticles, by influencing photosynthetic pigment content and improving yield components of the Talash cultivar, significantly increased seed yield of this cultivar compared to the local and Uzbek cultivars.

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Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 21 January 2027

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