Pre-activated biochar by fertilizers mitigates nutrient leaching and stimulates soil microbial activity

Chemical and Biological Technologies in Agriculture

Research

Tereza Hammerschmiedt¹  Pavel Ryant¹  Tivadar Baltazar¹  Antonin Kintl²  Jiri Holatko³  Martin Brtnicky⁴  Adnan Mustafa⁵  Lukas Trakal⁶  Luke Beesley⁶  Carol Omara-Ojungu⁶ 

[1]Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic

[2]Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic

[3]Agricultural Research, Ltd, Zahradni 400/1, 664 41, Troubsko, Czech Republic

[4]Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic

[5]Agrovyzkum Rapotin, Ltd., Vyzkumniku 267, 788 13, Rapotin, Czech Republic

[6]Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic

[7]Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic

[8]Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic

[9]Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic

[10]Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Benatska 2, 12800, Prague, Czech Republic

[11]Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500, Prague 6 - Suchdol, Czech Republic

关键词: Enhanced biochar;    Soil health;    Crop production;    Fertilization;   

DOI  :  10.1186/s40538-023-00430-7

 received in 2023-05-04, accepted in 2023-06-09,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundPrevious studies have suggested that the targeted application of biochars in agricultural soils may benefit soil health and crop production. Physico-chemical properties of soils after biochar addition have been explored, but less is known about how microbial parameters respond. Therefore, impact of biochar (NB), mineral fertilizer-activated biochar (AB), or mineral fertilizer (MF) application on selected chemical and microbial parameters of lettuce-planted soil was evaluated in a pot experiment.ResultsIn comparison to the control, soil enzymes activities, related to carbon (C), nitrogen (N), and phosphorus (P) cycling, and their content in plant biomass, were significantly increased by the addition of mineral fertilizer with or without biochar (MF, NB + MF). Conversely, microbial respiration (basal and substrate induced) was highly responsive to the activated biochar amendment (AB) as compared to other treatments. N, P, and potassium (K) concentrations in soil pore water were stabilized by the mineral fertilizer-activated biochar, indicating reduced leaching and the likelihood of increased longevity of these nutrients in soils. Enhanced carbon acquisition and mitigated nitrogen acquisition in soil of the most experimental treatments were coupled with higher crop (lettuce) biomass.ConclusionsOur study demonstrates that the application of biochar both with and without mineral fertilizer has the potential to enhance microbial activity and fertility in the tested agricultural soil, but that leaching of fertilizer-borne nutrients may be mitigated by the activation process.Graphical Abstract

【 授权许可】

CC BY   
© The Author(s) 2023

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