The Effect of Anaerobic Digestate on the Soil Organic Carbon and Humified Carbon Fractions in Different Land-Use Systems in Lithuania

Alvyra Slepetiene, Mykola Kochiieru, Linas Jurgutis, Audrone Mankeviciene, Aida Skersiene and Olgirda Belova
Additional contact information
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
Linas Jurgutis: 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
Aida Skersiene: 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

Land, 2022, vol. 11, issue 1, 1-17

Abstract: The most important component of agricultural system are soils as the basis for the growth of plants, accumulation of water, plant nutrients and organic matter. The main task of our research was to ascertain changes in soil organic carbon (SOC) and mobile humified carbon fractions in digestate-treated soils. We have performed three field experiments using the same design on two soil types in 2019–2020. We studied the fertilization effects of different phases of digestate on Retisol and Fluvisol. Fertilization treatments: 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. We have found a greater positive effect on the increase in SOC because of the use of the maximum recommended fertilization rate of the solid digestate. The content of mobile humic substances (MHS) tended to increase in grassland and crop rotation field in digestate-treated soil. In our experiment, maximum concentration of SOC was found in 0–10 cm soil layer, while in the deeper layers the amount of SOC, MHS and mobile humic acids proportionally decreased. We concluded, that long-term factors as soil type and land use strongly affected the humification level expressed as HD (%) in the soil and the highest HD was determined in the grassland soil in Fluvisol.

Keywords: carbon fractions; mobile humic substances; humic acids; soil; solid digestate fraction; liquid digestate fraction; Fluvisol; Retisol (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (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)

Downloads: (external link)
https://www.mdpi.com/2073-445X/11/1/133/pdf (application/pdf)
https://www.mdpi.com/2073-445X/11/1/133/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jlands:v:11:y:2022:i:1:p:133-:d:725350

Access Statistics for this article

Land is currently edited by Ms. Carol Ma

More articles in Land from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().