The effect of using Rhizobium bacteria in combination with nitrogen fertilizer rates on soybean yield in coastal sandy soil at Quang Dien district, Hue City
Vol. 134 No. 3B (2025), Original Article
Vol. 134 No. 3B (2025)

The effect of using Rhizobium bacteria in combination with nitrogen fertilizer rates on soybean yield in coastal sandy soil at Quang Dien district, Hue City

Original Article
https://doi.org/10.26459/hueunijard.v134i3B.7831
Published 2025-06-30
Tran Thi Anh Tuyet
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Tran Thi Thu Giang
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Ho Cong Hung
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Truong Thi Dieu Hanh
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
Hoang Thi Thai Hoa
University of Agriculture and Forestry, Hue University, 102 Phung Hung St., Hue, Vietnam
PDF (Vietnamese)

Keywords

soybean
coastal sandy soil
nitrogen fertilizer
Rhizobium
Hue City đậu tương
đất cát biển
phân đạm
Rhizobium
thành phố Huế

Abstract

Soybean (Glycine max (L.) Merr.) is a short-term industrial crop with high economic values. The study was conducted in Quang Dien district, Hue city in 2024 to evaluate the combined use effectiveness of Rhizobium bacteria and nitrogen rates on yield, biological nitrogen fixation capacity of soybean and soil properties. The experiment was arranged in a split-plot design including main plots (with and without Rhizobium bacteria inoculation) and sub plots with 4 nitrogen rates (0, 20, 40 and 60 kg N/ha). The results showed that nitrogen fertilization rates combined with Rhizobium bacteria in had a positive impact on yield and biological nitrogen fixation capacity of soybean and soil properties. Applicationof 40 kg N/ha combined with Rhizobium bacteria inoculation obtained the highest soybean yield (3.22 tons/ha), while application of 20 kg N/ha combined with Rhizobium bacteria inoculation had the best biological nitrogen fixation efficiency (Ndfa ratio reached 56.97%). Rhizobium bacteria inoculation also contributed to improve pH and some properties of coastal sandy soil. Rhizobium bacteria inoculation can be combined with nitrogen rates from 20 to 40 kg N/ha to both increase yield, ensure biological nitrogen fixation and improve the properties of coastal sandy soil.

https://doi.org/10.26459/hueunijard.v134i3B.7831
PDF (Vietnamese)

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