The fate of nitrogen derived from mown wetland biomass in a swampy river valley landscape

Agnieszka Jolanta Wysocka-Czubaszek , Robert Czubaszek , Sławomir Roj-Rojewski , Piotr Banaszuk

Abstract

Wetlands provide a natural environment for nutrient attenuation; however, these ecosystems may also be used as a source of nutrients for soil fertilisation. Anaerobic digestion (AD) of mown plants from wet areas is a promising option to solve the problem of harvested biomass, while the digestate produced during the AD process can be a valuable nitrogen (N) fertiliser. An incubation experiment was run to investigate the effect of fertilising with digestates produced from four wetland plant species (reed sweet-grass, common reed, tufted sedge, reed canary grass) on inorganic-N dynamics in arable soil typical for the region. The amount of N in all digestates was similar and ranged from 46.8 ± 5.6 to 61.5 ± 3.1 g kg-1 (dw). The inorganic-N concentration in the soil increased during the first two weeks, mainly due to a reduction in NH4-N. Rapid NO3-N production led to the amount of NO3-N almost doubling as a result of fertilisation. In all amended soils the N dynamics were similar and did not differ from those in soil fertilised with digestate derived from maize. The incorporation of N from biomass harvested in wetlands into soils on the adjacent arable land could play an important role in the N cycle of a swampy river valley landscape by reducing the need for additional N inputs and thus reducing the transfer of N from agricultural uplands to the river
Author Agnieszka Jolanta Wysocka-Czubaszek (FCEE / DAEEM)
Agnieszka Jolanta Wysocka-Czubaszek,,
- Department of Agri-Food Engineering and Environmental Management
, Robert Czubaszek (FCEE / DAEEM)
Robert Czubaszek,,
- Department of Agri-Food Engineering and Environmental Management
, Sławomir Roj-Rojewski (FCEE / DAEEM)
Sławomir Roj-Rojewski,,
- Department of Agri-Food Engineering and Environmental Management
, Piotr Banaszuk (FCEE / DAEEM)
Piotr Banaszuk,,
- Department of Agri-Food Engineering and Environmental Management
Journal seriesMires and Peat, ISSN 1819-754X, (N/A 40 pkt)
Issue year2019
Vol25
Pages1-13
Publication size in sheets0.6
ASJC Classification1104 Aquatic Science; 1105 Ecology, Evolution, Behavior and Systematics; 1111 Soil Science; 2303 Ecology; 2309 Nature and Landscape Conservation
DOIDOI:10.19189/MaP.2017.OMB.319
URL http://mires-and-peat.net/pages/volumes/map25/map2505.php
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Other open licence; with publication
Score (nominal)40
Score sourcejournalList
ScoreMinisterial score = 40.0, 12-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.386; WoS Impact Factor: 2018 = 1.868 (2) - 2018=1.802 (5)
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