The undefined N source might be overestimated by 15 N tracer trials

© 2020 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 27(2021), 3 vom: 21. Feb., Seite 467-468
1. Verfasser: Quan, Zhi (VerfasserIn)
Weitere Verfasser: Zhang, Xin, Fang, Yunting
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Letter Comment Fertilizers Soil Nitrogen N762921K75
Beschreibung
Zusammenfassung:© 2020 John Wiley & Sons Ltd.
Based on data from previous 15 N-tracer trials, Yan et al. (Global Change Biology, 26, 191-199; 2020) accounted the sources of cereal crop nitrogen (N) from fertilizer inputs (from both current and previous seasons) and possible uptake of nonfertilizer N inputs, leaving a significant part of N source undefined. We argue that the undefined N source does not reflect the net change in soil N stock and might be overestimated for three reasons: (a) higher yield in 15 N tracer trials; (b) a low residue return rate is assumed; (c) underestimated contribution by fertilizer inputs from previous seasons due to the lack of long-term trials
Beschreibung:Date Completed 21.04.2021
Date Revised 21.04.2021
published: Print-Electronic
CommentOn: Glob Chang Biol. 2020 Jan;26(1):191-199. - PMID 31789452
Citation Status MEDLINE
ISSN:1365-2486
DOI:10.1111/gcb.15371