期刊
MINERALS
卷 12, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/min12040409
关键词
bioaugmentation; Bacillus amyloliquefaciens; RhizoVital (R) 42; bioavailability; phytoextraction; trace elements; germanium; rare earth elements
资金
- Sachsische Aufbaubank (SAB) [LIP 2018-2 100343232 AP2]
- European Social Funds
- Fazit Stiftung
- Publication Fund of the TU Bergakademie Freiberg
This study investigates the effect of soil bioaugmentation on a field scale and finds that inoculation with Bacillus amyloliquefaciens FZB42 can increase crop biomass production and affect plant accumulation of target elements. The results also suggest that soil bioaugmentation can enhance soil element bioavailability.
This study is an investigation of the effect of soil bioaugmentation (inoculation) on a field scale with the commercially available product RhizoVital (R) 42, containing Bacillus amyloliquefaciens FZB4, on element bioavailability, plant biomass production, as well as accumulation of rare earth elements (REEs), germanium, and selected trace elements. Zea mays and Helianthus annuus were selected as test plants. Post-harvest, results showed inoculation increased biomass production of Z. mays and H. annuus by 24% and 26%, albeit insignificant at p <= 0.05. Bioaugmentation enhanced Z. mays shoot content of P, Cd, and Ge by percentages between 73% and 80% (significant only for Ge) and decreased shoot content of REET, Pb, and Cu by 28%, 35%, and 59%, respectively. For H. annuus grown on bioaugmented soil, shoot content of Ca, Cu, Ge, REET, and Pb increased by over 40%, with a negligible decrease observed for Cd. Summarily, results suggest that bioaugmentation with Bacillus amyloliquefaciens FZB42 could enhance biomass production, increase soil element bioavailability enhance, and increase or reduce plant accumulation of target elements. Additionally, differences in P use efficiency could influence bioaugmentation effects on P accumulation.
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