EFFECTS OF NITROGEN LEVELS ON GROWTH, YIELD AND QUALITY OF DESMODIUM STYRACIFOLIUM

Nguyễn Bá Hưng; Đào Văn Núi; Nguyễn Văn Dũng; Phan Thị Thu; Trần Đại Hải; Lê Thị Thu; Nguyễn Xuân Khánh; Đặng Thị Hà

doi:10.34238/tnu-jst.13021

EFFECTS OF NITROGEN LEVELS ON GROWTH, YIELD AND QUALITY OF DESMODIUM STYRACIFOLIUM

About this article

Received: 09/06/25 Revised: 30/10/25 Published: 31/10/25

Authors

1. Nguyen Ba Hung, Research Centre for Medicinal Plants
2. Dao Van Nui, Research Centre for Medicinal Plants
3. Nguyen Van Dung, Research Centre for Medicinal Plants
4. Phan Thi Thu, Research Centre for Medicinal Plants
5. Tran Dai Hai, Research Centre for Medicinal Plants
6. Le Thi Thu, Research Centre for Medicinal Plants
7. Nguyen Xuan Khanh , Research Centre for Medicinal Plants
8. Dang Thi Ha, Research Centre for Medicinal Plants

Abstract

Desmodium styracifolium is used to treat urinary tract infections, fever, kidney stones, cardiovascular disease and hepatitis. This study focused on determining the effect of nitrogen level on the growth, yield and quality of Desmodium styracifolium. The experiment was conducted after determining the amount of N absorbed by Desmodium styracifolium. The experiment used 8 treatments (0; 90; 120; 150; 180; 210; 240; 270 kg N/ha) in a randomized complete block design with 3 replications, conducted in Thanh Tri commune, Hanoi city. The results indicated that increasing the nitrogen level from 90 to 150 kg N/ha, monitored indicators increased. However, further increases in nitrogen did not result in further increases, and instead, indicators decreased. The 150 kg N/ha treatment yielded the highest medicinal plant yield (8.75 tons/ha), schaftoside content (0.32% - 0.35%), and extractable content (10.83% - 11.45%). Therefore, 150 kg N/ha combined with 5 tons of organic-biological fertilizer, 90 kg P₂O₅, and 140 kg K₂O is most suitable for the growth of Desmodium styracifolium. The results of this study determine the optimal nitrogen level, improving fertilizer use efficiency, reducing production costs, enhancing both yield and medicinal quality of the plant.

Keywords

Desmodium styracifolium; Growth; Yield; Quality; Nitrogen level

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DOI: https://doi.org/10.34238/tnu-jst.13021

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