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

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-treate...

Full description

Saved in:
Bibliographic Details
Published in:Land (Basel) 2022-01, Vol.11 (1), p.133
Main Authors: Slepetiene, Alvyra, Kochiieru, Mykola, Jurgutis, Linas, Mankeviciene, Audrone, Skersiene, Aida, Belova, Olgirda
Format: Article
Language:English
Subjects:
Agricultural practices
Biogas
Carbon
carbon fractions
Crop rotation
Farm buildings
Farming systems
Fertilization
Fertilizers
Field tests
Grasslands
Humic acids
Humic substances
Humification
Influence
Laboratories
Land use
liquid digestate fraction
Manures
Mineralization
mobile humic substances
Nutrients
Organic carbon
Organic matter
Organic soils
Plant growth
Sludge
soil
Soil fertility
Soil layers
Soil treatment
Soil types
Soils
solid digestate fraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:2073-445X
2073-445X
DOI:10.3390/land11010133