Effects of Nitrogen Fertilization and Nitrogen Fixing Endophytic Bacteria Supplementation on Soil Fertility, N Uptake, Growth, and Yield of Sesame (Sesamum indicum L.) Cultivated on Alluvial Soil in Dykes

Applied and Environmental Soil Science - Tập 2022 - Trang 1-12 - 2022
Lê Vĩnh Thúc1, Tran Ngoc Huu1, Trinh Minh Ngoc1, Nguyen Hong Hue1, Le Thanh Quang2, Do Thi Xuan2, Tran Chi Nhan3, Ly Ngoc Thanh Xuan3, Le Thi My Thu1, Isao Akagi4, Jun‐Ichi Sakagami4, Nguyễn Quốc Khương1
1Department of Crop Science, College of Agriculture, Can Tho University, Can Tho 94000, Vietnam
2Biotechnology Research and Development Institute, Can Tho University, Can Tho 94000, Vietnam
3Experimental and Practical Area, An Giang University, Vietnam National University, Ho Chi Minh City, Vietnam
4Faculty of Agriculture, Kagoshima University, Kagoshima 890-8580, Japan

Tóm tắt

The aim of this study was to determine the proper combination of nitrogen (N) fertilizer level and nitrogen fixing endophytic bacteria (NFEB) supplementation for the maximum grain yield of sesame cultivated in alluvial soil in dykes. The experiment followed a completely randomized block design with two factors. The first one was the levels of N fertilizer used, including 0, 50, 75, and 100% N of recommended fertilizer formula (RFF), and the other consisted of no bacteria applied, an individual strain of Enterobacter cloacae ASD-48 or E. cloacae ASD-21 applied, and their mixture, with 5 replicates. The results revealed that fertilizing with 100% N of RFF led to an enhancement of the plant height (16.8 cm), the chlorophyll a and b and their total content (6.45, 1.86, and 8.30 μg mL−1), the number of capsules per plant (7.22 capsules plant−1), the total N uptake (126.5 mg N pot−1), and the grain yield (9.08 g pot−1), in comparison to no N fertilizer applied. Supplementation of two NFRB strains enhanced the soilconcentrations of NH4+ and NO3−, the total N uptake, and the grain yield. The treatment fertilized with 75% N of RFF plus an individual NFEB strain or their bacterial mixture had equivalent total N uptake to that the treatment fertilized with 100% N of RFF had, 120.8–125.5 mg N pot−1 compared to 124.4 mg N pot−1. Regarding the sesame yield, with a reduction by 25–50% N of RFF plus ASD-48 and ASD-21, either individually or in mixture, it increased by 2.39–8.56%, compared to that in the treatment fertilized with 100% N of RFF.

Từ khóa


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Thông tin xuất bản

Applied and Environmental Soil Science

Tập 2022

1-12

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