Detail publikace

Deciphering the Effectiveness of Humic Substances and Biochar Modified Digestates on Soil Quality and Plant Biomass Accumulation

HOLÁTKO, J. HAMMERSCHMIEDT, T. LÁTAL, O. KINTL, A. MUSTAFA, A. BALTAZÁR, T. MALÍČEK, O. BRTNICKÝ, M.

Originální název

Deciphering the Effectiveness of Humic Substances and Biochar Modified Digestates on Soil Quality and Plant Biomass Accumulation

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The effective use of digestate as exogenous organic matter to enhance soil carbon sequestration depends on the balance between labile and recalcitrant organic carbon, which is influenced by the type of feedstock, the fermentation process, and the fraction (liquid, solid) of the fermented product used. In this work, in order to change the ratio of labile to stable carbon in the resulting fertiliser, the digestate was mixed with organic carbon-rich supplements: biochar and Humac (a humic acid-rich substance). The pot experiment was carried out under controlled conditions with maize (Zea mays L.) in soil amended with the digestate (D), which was incubated with Humac (H), biochar (B), or a combination of both (D + B + H) before the application. Digestate enriched with Humac showed improved short-term nutrient (carbon, phosphorus, nitrogen) transformation, as indicated by soil enzyme activity and the highest maize biomass production of. Total carbon content, C:N ratio, short-term respiration activity, and nitrification were most enhanced by digestate enriched with either biochar or combined biochar + Humac). Long-term nitrogen mineralization was mostly enhanced by digestate + Humac, as indicated by amino-acid-induced respiration and urease activity. Short-term positive effects of digestate + biochar (eventually + Humac) on catabolism were proven, whereas their long-term effects on nutrient mineralization were negative (i.e., biochar-mediated immobilization, sequestration), which should be the focus of further research in future.

Klíčová slova

digestate; soil health; respiration; sustainable agriculture; soil nutrients

Autoři

HOLÁTKO, J.; HAMMERSCHMIEDT, T.; LÁTAL, O.; KINTL, A.; MUSTAFA, A.; BALTAZÁR, T.; MALÍČEK, O.; BRTNICKÝ, M.

Vydáno

30. 6. 2022

Nakladatel

MDPI

Místo

BASEL

ISSN

2073-4395

Periodikum

Agronomy

Ročník

12(7)

Číslo

1587

Stát

Švýcarská konfederace

Strany od

1

Strany do

12

Strany počet

12

URL

https://www.mdpi.com/2073-4395/12/7/1587

BibTex

@article{BUT182171,
  author="Jiří {Holátko} and Tereza {Hammerschmiedt} and Oldřich {Látal} and Antonín {Kintl} and Adnan {Mustafa} and Tivadar {Baltazár} and Ondřej {Malíček} and Martin {Brtnický}",
  title="Deciphering the Effectiveness of Humic Substances and Biochar Modified Digestates on Soil Quality and Plant Biomass Accumulation",
  journal="Agronomy",
  year="2022",
  volume="12(7)",
  number="1587",
  pages="1--12",
  doi="10.3390/agronomy12071587",
  issn="2073-4395",
  url="https://www.mdpi.com/2073-4395/12/7/1587"
}