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Role of Nutrient-Enriched Biochar as a Soil Amendment during Maize Growth: Exploring Practical Alternatives to Recycle Agricultural Residuals and to Reduce Chemical Fertilizer Demand
Kizito, Simon1,2; Luo, Hongzhen1; Lu, Jiaxin1; Bah, Hamidou3; Dong, Renjie1; Wu, Shubiao4
Corresponding AuthorWu, Shubiao(wushubiao@gmail.com)
2019-06-01
Source PublicationSUSTAINABILITY
ISSN2071-1050
Volume11Issue:11Pages:22
AbstractRecycling and value-added utilization of agricultural residues through combining technologies such as anaerobic digestion and pyrolysis could double the recoverable energy, close the nutrient recycle loop, and ensure cleaner agricultural production. This study assessed the beneficial application of biochar to soil to recycle digestate nutrients, improve soil quality, and reduce conventional chemical fertilizer. The addition of digestate-enriched biochar improved soil quality as it provided higher soil organic matter (232%-514%) and macronutrients (110%-230%) as opposed to the unenriched biochar and control treatments. Maize grown in soil amended with digestate-enriched biochar showed a significantly higher biomass yield compared to the control and non-enriched biochar treatments but was slightly lower than yields from chemical fertilizer treatments. The slightly lower yield (20%-25%) achieved from digestate-enriched biochar was attributed to slower mineralization and release of the adsorbed nutrients in the short term. However, digestate-enriched biochar could in the long term become more beneficial in sustaining soil fertility through maintaining high soil organic matter and the gradual release of micronutrients compared to conventional chemical fertilizer. Positive effects on soil micronutrients, macronutrients, organic matter, and biomass yield indicates that enriched biochar could partly replace chemical fertilizers and promote organic farming in a circular economy concept.
Keywordagricultural residues anaerobic digestate nutrient recycle agroecosystems corn fertilization
DOI10.3390/su11113211
Indexed BySCI
WOS KeywordANAEROBIC-DIGESTION ; BIOGAS PRODUCTION ; CROP YIELD ; WASTE ; PYROLYSIS ; SLOW ; PHOSPHATE ; SORPTION ; RELEASE ; MANURE
Language英语
Funding Projectproject of Research Fund for International Young Scientist[51650110489] ; European Union's Seventh Framework Programme for Research, Technological Development and Demonstration[609033]
WOS Research AreaScience & Technology - Other Topics ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS IDWOS:000472632200216
Funding Organizationproject of Research Fund for International Young Scientist ; European Union's Seventh Framework Programme for Research, Technological Development and Demonstration
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26506
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorWu, Shubiao
Affiliation1.China Agr Univ, Coll Engn, Key Lab Clean Utilizat Technol Renewable Energy, Minist Agr, Beijing 100083, Peoples R China
2.Makerere Univ, Coll Agr & Environm Sci, Sch Forestry Environm & Geog Sci, POB 7062, Kampala, Uganda
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
4.Aarhus Univ, Aarhus Inst Adv Studies, DK-8000 Aarhus C, Denmark
Recommended Citation
GB/T 7714
Kizito, Simon,Luo, Hongzhen,Lu, Jiaxin,et al. Role of Nutrient-Enriched Biochar as a Soil Amendment during Maize Growth: Exploring Practical Alternatives to Recycle Agricultural Residuals and to Reduce Chemical Fertilizer Demand[J]. SUSTAINABILITY,2019,11(11):22.
APA Kizito, Simon,Luo, Hongzhen,Lu, Jiaxin,Bah, Hamidou,Dong, Renjie,&Wu, Shubiao.(2019).Role of Nutrient-Enriched Biochar as a Soil Amendment during Maize Growth: Exploring Practical Alternatives to Recycle Agricultural Residuals and to Reduce Chemical Fertilizer Demand.SUSTAINABILITY,11(11),22.
MLA Kizito, Simon,et al."Role of Nutrient-Enriched Biochar as a Soil Amendment during Maize Growth: Exploring Practical Alternatives to Recycle Agricultural Residuals and to Reduce Chemical Fertilizer Demand".SUSTAINABILITY 11.11(2019):22.
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