Publication Details

Category Text Publication
Reference Category Journals
DOI 10.5194/bg-6-1139-2009
Title (Primary) Mineral fertilization did not affect decay of old lignin and SOC in a 13C-labeled arable soil over 36 years
Author Hofmann, A.; Heim, A.; Gioacchini, P.; Miltner, A. ORCID logo ; Gehre, M.; Schmidt, M.W.I.
Source Titel Biogeosciences
Year 2009
Department ISOBIO; UBT
Volume 6
Issue 7
Page From 1139
Page To 1148
Language englisch
Abstract Retardation of soil organic carbon (SOC) decay after nitrogen addition to litter or soil has been suggested in several recent studies and has been attributed to a retardation in lignin decay. With our study we tested the long-term effect of mineral fertilization (N+P) on the decay of the SOC component lignin in arable soil. To achieve this, we tracked 13C-labeled lignin and SOC in an arable soil that is part of a 36-year field experiment (conversion from C3 to C4 crops) with two mineral fertilization levels. We could show that fertilization neither retarded nor enhanced the decay of old SOC or lignin over a period of 36 years, proposing that decay of lignin was less sensitive to fertilization than previously suggested. However, for new, C4-derived lignin there were indications that decay might have been enhanced by the fertilization treatment, whereas decay of new SOC was unaffected.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=272
Hofmann, A., Heim, A., Gioacchini, P., Miltner, A., Gehre, M., Schmidt, M.W.I. (2009):
Mineral fertilization did not affect decay of old lignin and SOC in a 13C-labeled arable soil over 36 years
Biogeosciences 6 (7), 1139 - 1148 10.5194/bg-6-1139-2009