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Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

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  • Songping Luo

    (College of Resources and Environment, Southwest University, Chongqing 400715, China
    Guizhou Technology Consulting Research Center of Soil and Water Conservation, Guiyang 550002, China)

  • Binghui He

    (College of Resources and Environment, Southwest University, Chongqing 400715, China)

  • Dandan Song

    (College of Resources and Environment, Southwest University, Chongqing 400715, China)

  • Tianyang Li

    (College of Resources and Environment, Southwest University, Chongqing 400715, China)

  • Yaopeng Wu

    (College of Resources and Environment, Southwest University, Chongqing 400715, China)

  • Lei Yang

    (State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China)

Abstract

Biochar has been widely used to ameliorate soil quality and increase crop productivity through enhancement of nutrient availability and microbial community. The Karst yellow soil in China is characterized by severe soil degradation owing to intensive nutrient leaching. However, the biochar addition effects on the changes of Karst yellow soil are unclear, and the adequate number of biochar dosages to explain optimum of plant growth in this soil area remains poorly understood. In this study, pot experiments were conducted to examine the effects of biochar addition (1%, 3%, 5%, 7%, and 9% by weight; 0% as a control) on bacterial abundance and community structure via high-throughput sequencing coupled with bioinformatics methods applied to Karst yellow soil with planting ryegrass ( Lolium perenne L. ) and daylily ( Hemerocallis fulva ). After adding biochar for 188 days, significantly increased pH, soil organic matter, total nutrient contents, and bacterial abundance, but decreased available nitrogen, were observed. Changed bacterial community structures were found in biochar treatments compared with those without biochar. In both soils of planted ryegrass and daylily, the optimum soil bacterial abundance was found in 7% biochar dosage, but the lowest values were in the controls (0%). Taxonomic analysis identified that Micrococcaceae (24.53%), Oxalobacteraceae (11.87%), and Nocardioidaceae (7.89%) were the dominant family in the soil of ryegrass growth, and Micrococcaceae (16.20%), Xanthomonadaceae (6.94%), and Nocardioidaceae (6.41%) were the dominant family in soil of daylily growth. Canonical correspondence analysis showed that the alterations of soil bacterial abundance and community were highly interrelated with soil chemical properties. The results provided a better understanding of the mechanisms underlying the plant-soil microbe interactions and their responses to biochar dosages in low fertility soil regions.

Suggested Citation

  • Songping Luo & Binghui He & Dandan Song & Tianyang Li & Yaopeng Wu & Lei Yang, 2020. "Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily," Sustainability, MDPI, vol. 12(5), pages 1-19, March.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:5:p:2124-:d:330455
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    References listed on IDEAS

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    1. Gyami Shrestha & Samuel J. Traina & Christopher W. Swanston, 2010. "Black Carbon’s Properties and Role in the Environment: A Comprehensive Review," Sustainability, MDPI, vol. 2(1), pages 1-27, January.
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    1. Zhang, Cong & Huang, Xian & Zhang, Xingwei & Wan, Li & Wang, Zhenhong, 2021. "Effects of biochar application on soil nitrogen and phosphorous leaching loss and oil peony growth," Agricultural Water Management, Elsevier, vol. 255(C).
    2. Sokkeang Be & Soydoa Vinitnantharat & Anawat Pinisakul, 2021. "Effect of Mangrove Biochar Residue Amended Shrimp Pond Sediment on Nitrogen Adsorption and Leaching," Sustainability, MDPI, vol. 13(13), pages 1-19, June.

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