Changes in Stabile Organic Carbon in Differently Managed Fluvisol Treated by Two Types of Anaerobic Digestate

Alvyra Slepetiene (), Mykola Kochiieru, Aida Skersiene, Audrone Mankeviciene and Olgirda Belova
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Alvyra Slepetiene: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry (LAMMC), Instituto al. 1, Akademija, LT-58344 Kedainiai, Lithuania
Mykola Kochiieru: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry (LAMMC), Instituto al. 1, Akademija, LT-58344 Kedainiai, Lithuania
Aida Skersiene: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry (LAMMC), Instituto al. 1, Akademija, LT-58344 Kedainiai, Lithuania
Audrone Mankeviciene: Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry (LAMMC), Instituto al. 1, Akademija, LT-58344 Kedainiai, Lithuania
Olgirda Belova: Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry (LAMMC), Liepų St. 1, Girionys, LT-53101 Kaunas, Lithuania

Energies, 2022, vol. 15, issue 16, 1-11

Abstract: Biogas and anaerobic digestion has begun to be considered an important renewable and sustainable energy source. The sustainable development of the anaerobic digestion process depends largely on the ability to manage large amounts of by-products generated during the biogas production process. We hypothesized that the use of digestate increases the accumulation of C in stable forms. We supposed that the effect of digestate on soil depends on the land-use system, leading to different stratifications of C. The main task of our research was to ascertain changes in the amount of stabile organic carbon (SOCstabile) in digestate-treated soils. Two field experiments were performed using the same design in 2019–2020. We studied the fertilization effects of digestate on Fluvisol. Fertilization: control; separated liquid digestate 85 kg ha −1 N and 170 kg ha −1 170 N; separated solid digestate 85 kg ha −1 N and 170 kg ha −1 N. A randomized experimental design with three field replicates was used. In terms of carbon stabilization in Fluvisol, soil used for grassland showed an advantage over the arable soil. The study showed that digestate, especially solid digestate, contributes to C accumulation and stabilization in the soil.

Keywords: solid digestate fraction; liquid digestate fraction; stabile soil organic carbon; Fluvisol; crop rotation field; grassland; stratification (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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