Keywords
Pr2O3
nano oxide
chế phẩm sinh học
kích thích sinh trưởng thực vật
Đương Quy CeO2
Pr2O3
nano oxide
bioproduct
plant growth stimulant
Angelica sinensis
How to Cite
Abstract
In this study, CeO₂-Pr₂O₃ nano fertilizer was manufactured and utilised as a plant growth stimulant for Angelica sinensis. CeO₂-Pr₂O₃ was synthesised from cerium(IV) nitrate and praseodymium(III) nitrate as precursors via the ultrasonic-assisted co-precipitation method. The morphology and structure of the nanomaterials were characterised by using XRD, IR, EDX, SEM, and TEM. The composite CeO₂-Pr₂O₃ substantially affected the growth and development of Angelica sinensis. After 90 days of application, the plants treated with CeO₂-Pr₂O₃ nanomaterials exhibited significantly enhanced growth performance: plant height reached 37.8 cm (an increase of 36.0%); leaf number reached 37.9 leaves/plant (an increase of 37.3%), and canopy diameter reached 49.5 cm (an increase of 31.6%) compared with the control. Additionally, Angelica sinensis plants supplemented with CeO₂-Pr₂O₃ demonstrated improved morphological characteristics, including stronger stems, thicker and greener leaves, deeper purple stem colouration, and more vigorous root systems with a greater number of lateral and main roots. These findings suggest that CeO₂-Pr₂O₃ nanomaterials possess a notable plant growth-promoting effect on Angelica sinensis.
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