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Vertical and horizontal shifts in the microbial community structure of paddy soil under long-term fertilization regimes

Title data

Liu, Qiong ; Atere, Cornelius Talade ; Zhu, Zhenke ; Shahbaz, Muhammad ; Wei, Xiaomeng ; Pausch, Johanna ; Wu, Jinshui ; Ge, Tida:
Vertical and horizontal shifts in the microbial community structure of paddy soil under long-term fertilization regimes.
In: Applied Soil Ecology. Vol. 169 (2022) . - 104248.
ISSN 0929-1393

Abstract in another language

Knowledge remains limited on how the structure of microbial community in paddy soils changes in relation to different types of fertilizers with same amount of nutrients. Thus, here, soil samples were collected at 0–10, 10–20, 20–30, and 30–40 cm depths from a paddy field subjected to four long-term fertilization treatments (no fertilization, mineral fertilization, mineral fertilization combined with rice straw, and chicken manure) and analyzed for microbial biomass and community composition. In unfertilized soils, microbial biomass decreased from 0 to 40 cm (with actinomycetes < gram-positive (G+) bacteria < gram-negative (G−) bacteria < fungi). This ordering was retained after fertilization, but the decline with depth was less pronounced. Both mineral and mineral plus organic fertilization increased the biomass of G+ bacteria compared to G− bacteria (22.7–56.2% increase) and actinomycetes (14.8–52.5% increase). Thus, over the long term, G+ bacteria benefited the most from mineral fertilizer than the other microbial groups. The partial replacement of mineral fertilizer with manure primarily enhanced the abundance of G+ bacteria at 0–30 cm soil depth, whereas replacement with straw enhanced the abundance of fungi at 10–20 cm soil depth. Our findings demonstrate that the structure of the microbial community is strongly impacted by long-term fertilization, independent of fertilizer type.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Mineral fertilizer; Microbial community composition; Straw addition; Soil depth; Organic manure; Paddy soil
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professor Agroecology > Professor Agroecology - Juniorprof. Dr. Johanna Pausch
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 550 Earth sciences, geology
500 Science > 570 Life sciences, biology
Date Deposited: 17 Oct 2023 05:12
Last Modified: 17 Oct 2023 05:12