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Singh E, Kumar A, Lo SL. Synergistic roles of carbon dioxide nanobubbles and biochar for promoting direct CO 2 assimilation by plants and optimizing nutrient uptake efficiency. ENVIRONMENTAL RESEARCH 2024; 244:117918. [PMID: 38097059 DOI: 10.1016/j.envres.2023.117918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/26/2023] [Accepted: 12/09/2023] [Indexed: 12/20/2023]
Abstract
This study investigates the synergistic role of carbon dioxide nanobubbles (CNBs) and biochar (BC) on seed germination, plant growth, and soil quality, employing Solanum lycopersicum (tomato) and Phaseolus vulgaris (beans) as test plant species. CNBs, generated and dispersed in both distilled water (DW) and tap water (TW), exhibited distinct characteristics, with TW-CNBs being larger and more stable (peak values of around 18.17 nm and 299.5 nm, zeta potential (ZP) of -5.91 mV), while DW-CNBs have peak values of around 1.63 nm and 216.1 nm, ZP of -3.23 mV. The results suggest CNBs enhance seed germination by upto 20%. CNBs in BC amended soil further promoted plant height and leaf number. CNBs increased dissolved CO2 levels to 2-24 ppm within 40 min, while BC enriched soil organic carbon from 19.20 to 24.96 ppm in beans and 18.33 to 22.35 ppm in tomatoes. The pH levels decreased from 7.68 to 3.78 for TW-CNBs and from 7.41 to 2.13 for DW-CNBs. Additionally, the electrical conductivity (EC) decreased from 112.1 to 99.6 for TW-CNBs, while it increased from 4.15 to 32.1 for DW-CNBs. Together they significantly increased soil available phosphorus and potassium to 4.03-8.06 and 3.58-7.16 kg ha-1; and 5.67-55.74 and 17.57-43.79 kg ha-1 in bean and tomato, respectively. Variations in nutrient concentrations were observed, with substantial increase in Na (16.27% and 6.58%), Zn (3.39% and 0.46%), and Mg (5.05% and 1.44%) content for beans and tomatoes, respectively. Structural equation model and principal component analysis revealed differences between CNB and BC treated soils, highlighting positive impact on soil quality and plant growth compared to control. Integration of CNBs and BC presents a multifaceted approach to enhance soil quality and promote plant growth, offering promising solutions for sustainable agriculture and environmental management.
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Affiliation(s)
- Ekta Singh
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chuo-Shan Rd., Taipei, 10673, Taiwan
| | - Aman Kumar
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chuo-Shan Rd., Taipei, 10673, Taiwan
| | - Shang-Lien Lo
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chuo-Shan Rd., Taipei, 10673, Taiwan; Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, Taipei, 10617, Taiwan.
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Poeplau C, Liang Z, Don A, Seitz D, De Notaris C, Angers D, Barré P, Beillouin D, Cardinael R, Ceschia E, Chenu C, Constantin J, Demenois J, Mary B, Pellerin S, Plaza-Bonilla D, Quemada M, Justes E. Cover crops do increase soil organic carbon stocks-A critical comment on Chaplot and Smith (2023). GLOBAL CHANGE BIOLOGY 2024; 30:e17128. [PMID: 38273485 DOI: 10.1111/gcb.17128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 12/14/2023] [Indexed: 01/27/2024]
Affiliation(s)
| | - Zhi Liang
- Department of Agroecology, Aarhus University, Tjele, Denmark
| | - Axel Don
- Thünen Institute of Climate-Smart Agriculture, Braunschweig, Germany
| | - Daria Seitz
- Thünen Institute of Climate-Smart Agriculture, Braunschweig, Germany
| | - Chiara De Notaris
- Division Impacts on Agriculture, Forests and Ecosystem Services (IAFES), Euro-Mediterranean Center on Climate Change, Viterbo, Italy
| | - Denis Angers
- Agriculture and Agri-Food Canada and Université Laval, Québec, Canada
| | - Pierre Barré
- Laboratoire de Géologie, École Normale Supérieure, CNRS, Université PSL, IPSL, Paris, France
| | | | - Rémi Cardinael
- AIDA, Univ Montpellier, CIRAD, Montpellier, France
- CIRAD, UPR AIDA, Harare, Zimbabwe
- Plant Production Sciences and Technology, University of Zimbabwe, Harare, Zimbabwe
| | - Eric Ceschia
- CESBIO, Université de Toulouse, CNES/CNRS/INRAE/IRD/UT3, Toulouse, France
| | - Claire Chenu
- Ecosys, Université Paris-Saclay, INRAE, AgroParisTech, Palaiseau, France
| | - Julie Constantin
- INRAE, Université de Toulouse, UMR AGIR, Castanet-Tolosan, France
| | - Julien Demenois
- AIDA, Univ Montpellier, CIRAD, Montpellier, France
- CIRAD, UPR AIDA, Montpellier, France
| | - Bruno Mary
- INRAE, BioEcoAgro Joint Research Unit, Laon, France
| | | | - Daniel Plaza-Bonilla
- Department of Agricultural and Forest Science and Engineering - Agrotecnio-CERCA Center, Universitat de Lleida, Lleida, Spain
| | - Miguel Quemada
- Universidad Politécnica de Madrid-CEIGRAM, Madrid, Spain
| | - Eric Justes
- CIRAD, Persyst Department, Montpellier, France
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