Journal
ARCHIVES OF AGRONOMY AND SOIL SCIENCE
Volume 68, Issue 5, Pages 676-687Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03650340.2020.1849625
Keywords
Broomcorn millet; rhizosphere soil; fertilizer management; diversity of bacterial communities; differential bacterial community
Categories
Funding
- Postdoctoral Science Foundation [YCX2018D2BH3]
- earmarked fund for China Agriculture Research System [CARS-06-13.5-A16]
- Shanxi Provincial Key Research and Development Program [201803D221020-6]
- National Natural Science Foundation of China [31760612]
- Shanxi National Academy of Agricultural Sciences National Natural Fund Support and Cultivation Project [YGJPY2001]
- earmarked fund for Modern Agro-industry Technology Research System [2020-03]
- Natural Science Foundation of Shanxi Province [201601D102049]
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The bacterial community structure and diversity in the rhizosphere of broomcorn millet treated with different fertilizers were analyzed. Compound fertilizers had the most significant effect on plant growth, followed by farmyard manure and then biological bacterial fertilizer. Actinobacteria and Pseudomonas sp. were dominant in all soil samples, with different abundances in different fertilizer treatments. Compound fertilizer was the most effective at encouraging broomcorn millet growth.
The bacterial community structure and diversity in the rhizosphere of broomcorn millet treated with different fertilizers were analyzed. The crops were grown under one of the four fertilization treatments: M1 (compound fertilizer), M2 (farmyard manure), M3 (biological bacterial fertilizer), and M4 (no fertilizer). The soil DNA was isolated, and the 16S rRNA library was sequenced using Illumina MiSeq sequencers. The bacterial diversity and the differential bacterial genera in four groups were analyzed. Compound fertilizers had the most significant effect on plant growth, followed by farmyard manure and then biological bacterial fertilizer (p < 0.05). Actinobacteria and Pseudomonas sp. were dominant in all soil samples. The abundance of Actinobacteria was higher in M1 and M4, and the abundance of Pseudomonas sp. was higher in M3 and M4. The number of bacterial genera (208) was the highest in M1. Eight bacterial genera with low abundance were common in M1 vs. M3 and M2 vs. M3. Four bacterial genera with high richness (Phormidium sp., Cellulosimicrobium sp., Yaniella sp., and Cloacibacterium sp.) overlapped in M1 vs. M3 and in M2 vs. M3. Compound fertilizer was the most effective at encouraging broomcorn millet growth (plant height, stem diameter, panicle weight, grain weight, and yield).
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