Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity

Abstract Background Soil carbon-rich organic amendments (biochar, humic substances) may improve the quality and fertility of arable soil. Their co-application can additively enhance the beneficial effect on soil. Hypothetically, the pre-treatment of biochar, by aging via soaking in a solution of com...

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Main Authors: Tereza Hammerschmiedt, Jiri Holatko, Vaclav Pecina, Dalibor Huska, Oldrich Latal, Antonin Kintl, Maja Radziemska, Sadiq Muhammad, Zygmunt M. Gusiatin, Martina Kolackova, Muhammad Nasir, Tivadar Baltazar, Niaz Ahmed, Martin Brtnicky
Format: Article
Language:English
Published: SpringerOpen 2021-09-01
Series:Chemical and Biological Technologies in Agriculture
Subjects:
Online Access:https://doi.org/10.1186/s40538-021-00242-7
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author Tereza Hammerschmiedt
Jiri Holatko
Vaclav Pecina
Dalibor Huska
Oldrich Latal
Antonin Kintl
Maja Radziemska
Sadiq Muhammad
Zygmunt M. Gusiatin
Martina Kolackova
Muhammad Nasir
Tivadar Baltazar
Niaz Ahmed
Martin Brtnicky
author_facet Tereza Hammerschmiedt
Jiri Holatko
Vaclav Pecina
Dalibor Huska
Oldrich Latal
Antonin Kintl
Maja Radziemska
Sadiq Muhammad
Zygmunt M. Gusiatin
Martina Kolackova
Muhammad Nasir
Tivadar Baltazar
Niaz Ahmed
Martin Brtnicky
author_sort Tereza Hammerschmiedt
collection DOAJ
description Abstract Background Soil carbon-rich organic amendments (biochar, humic substances) may improve the quality and fertility of arable soil. Their co-application can additively enhance the beneficial effect on soil. Hypothetically, the pre-treatment of biochar, by aging via soaking in a solution of commercially available humic substances, could result in synergism, which may exceed the benefit from simple co-application of both amendments to the soil. Therefore, the aim of this study was to investigate the impact of biochar, humic substances, the combination of both, and the impact of biochar aged by humic substances solution on soil microbial activities and plant growth in a short-term pot experiment with lettuce. Results The aging of biochar decreased the C:N ratio as compared to non-activated biochar. The co-application of biochar and humic substances into the soil resulted in the highest microbial biomass carbon and respiration activity. The majority of enzyme activities (β-glucosidase, arylsulfatase, N-acetyl-β-d-glucosaminidase, phosphatase) were the highest in humic substances-amended soil. The application of humic substances and biochar with humic substances seemed to stimulate microbial growth and activity followed by the competition of microflora for nutrients with plants, whereas the aged biochar behaved differently. The plants treated by aged biochar achieved the highest values of dry aboveground and root biomass of all variants. However, the assumed rapid uptake of nutrients by plants resulted in lower nutrient availability for microflora, and a decline in microbial viability. Conclusions Based on this study, the positive effect of co-applied humic substances and biochar on soil fertility, quality, and health can be concluded. The usability of biochar aging by humic solution requires further study. Graphic abstract
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spelling doaj.art-43b768e05ce349e596af0ba678bd0f192022-12-21T21:30:08ZengSpringerOpenChemical and Biological Technologies in Agriculture2196-56412021-09-018111210.1186/s40538-021-00242-7Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activityTereza Hammerschmiedt0Jiri Holatko1Vaclav Pecina2Dalibor Huska3Oldrich Latal4Antonin Kintl5Maja Radziemska6Sadiq Muhammad7Zygmunt M. Gusiatin8Martina Kolackova9Muhammad Nasir10Tivadar Baltazar11Niaz Ahmed12Martin Brtnicky13Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoDepartment of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoDepartment of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoDepartment of Chemistry and Biochemistry, Mendel University in BrnoDepartment of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoDepartment of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoDepartment of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoSoil and Water Testing Laboratory for ResearchDepartment of Environmental Biotechnology, Faculty of Geoengineering, University of Warmia and Mazury in OlsztynDepartment of Chemistry and Biochemistry, Mendel University in BrnoSoil and Water Testing Laboratory for ResearchDepartment of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoDepartment of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya UniversityDepartment of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of Agrisciences, Mendel University in BrnoAbstract Background Soil carbon-rich organic amendments (biochar, humic substances) may improve the quality and fertility of arable soil. Their co-application can additively enhance the beneficial effect on soil. Hypothetically, the pre-treatment of biochar, by aging via soaking in a solution of commercially available humic substances, could result in synergism, which may exceed the benefit from simple co-application of both amendments to the soil. Therefore, the aim of this study was to investigate the impact of biochar, humic substances, the combination of both, and the impact of biochar aged by humic substances solution on soil microbial activities and plant growth in a short-term pot experiment with lettuce. Results The aging of biochar decreased the C:N ratio as compared to non-activated biochar. The co-application of biochar and humic substances into the soil resulted in the highest microbial biomass carbon and respiration activity. The majority of enzyme activities (β-glucosidase, arylsulfatase, N-acetyl-β-d-glucosaminidase, phosphatase) were the highest in humic substances-amended soil. The application of humic substances and biochar with humic substances seemed to stimulate microbial growth and activity followed by the competition of microflora for nutrients with plants, whereas the aged biochar behaved differently. The plants treated by aged biochar achieved the highest values of dry aboveground and root biomass of all variants. However, the assumed rapid uptake of nutrients by plants resulted in lower nutrient availability for microflora, and a decline in microbial viability. Conclusions Based on this study, the positive effect of co-applied humic substances and biochar on soil fertility, quality, and health can be concluded. The usability of biochar aging by humic solution requires further study. Graphic abstracthttps://doi.org/10.1186/s40538-021-00242-7Lactuca sativaEnzyme activitiesPlant biomassPot experimentSoil organic matterSoil amendment
spellingShingle Tereza Hammerschmiedt
Jiri Holatko
Vaclav Pecina
Dalibor Huska
Oldrich Latal
Antonin Kintl
Maja Radziemska
Sadiq Muhammad
Zygmunt M. Gusiatin
Martina Kolackova
Muhammad Nasir
Tivadar Baltazar
Niaz Ahmed
Martin Brtnicky
Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity
Chemical and Biological Technologies in Agriculture
Lactuca sativa
Enzyme activities
Plant biomass
Pot experiment
Soil organic matter
Soil amendment
title Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity
title_full Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity
title_fullStr Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity
title_full_unstemmed Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity
title_short Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity
title_sort assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity
topic Lactuca sativa
Enzyme activities
Plant biomass
Pot experiment
Soil organic matter
Soil amendment
url https://doi.org/10.1186/s40538-021-00242-7
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