Foliar application of nano zero-valent iron improves the fruit quality of ‘Yanfu No.6’ apple

In this study, the appropriate concentration of nZVI promoted the growth and fruit quality of "Yanfu No.6" apple tree, among which, the nano-zero-valent iron with a concentration of 10 mg L^{- 1} had a significant effect on the growth and development of "Yanfu No.6" apple. This finding not only provides a theoretical basis and practical guidance for the application of nZVI in fruit tree production, but also provides a useful reference for the production of other fruit trees and crops. However, future studies are needed to further explore the regulation mechanism of nZVI on fruit tree growth and the molecular mechanism of its effect on fruit quality. Meanwhile, the environmental risk assessment and safety studies of nZVI should be strengthened to ensure its sustainable application and reduce the potential risks. These studies will provide a more comprehensive and in-depth scientific support for the widespread application of nZVI in agricultural production.