bei Google ScholarTitelangaben
Awad, Yasser Mahmoud ; Blagodatskaya, Evgenia ; Ok, Yong Sik ; Kuzyakov, Yakov:
Effects of polyacrylamide, biopolymer and biochar on the decomposition of 14C-labelled maize residues and on their stabilization in soil aggregates.
In: European Journal of Soil Science.
Bd. 64
(2013)
Heft 4
.
- S. 488-499.
ISSN 1351-0754
DOI: https://doi.org/10.1111/ejss.12034
Abstract
The efficacy of applying plant residues to agricultural soils as a carbon (C) source for microorganisms and C sequestration is dependent on soil physiochemical properties, which can be improved by aggregation using soil conditioners. However, no attempt has been made to assess the effects of soil conditioners such as biochar (BC), biopolymer (BP) or polyacrylamide (PAM) on plant residue decomposition. We assessed the effects of BC, synthesized BP and anionic PAM on the decomposition of 14C-labelled maize residues and on their stabilization in aggregate fractions in sandy and sandy loam soils. Polyacrylamide and BP were applied at 400 kg ha−1 and BC was applied at 5000 kg ha−1, and the soils were incubated for 80 days at 22°C. The conditioners improved the physical and biological properties of both soils, as shown by a 24% increase in the 1–2 mm aggregates. Biochar and BP accelerated the decomposition of plant residues as indicated by 14CO2 efflux, and resulted in reduced stabilization of residues in both soils relative to that observed in the control and PAM treatments. The reduction in 14C incorporation and C stabilization in the BC- and BP-treated soils was observed mainly in the
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER120381 |
| Institutionen der Universität: | Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 22 Jul 2015 05:41 |
| Letzte Änderung: | 22 Jul 2015 05:41 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/16972 |