Straw amendment and nitrification inhibitor controlling N losses and immobilization in a soil cooling-warming experiment

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschung

Authors

  • Hao Chen
  • Christoph Rosinger
  • Sergey Blagodatsky
  • Rüdiger Reichel
  • Bo Li
  • Amit Kumar
  • Steffen Rothardt
  • Jie Luo
  • Nicolas Brüggemann
  • Henning Kage
  • Michael Bonkowski
It is common practice in agriculture to apply high‑carbon amendments, e.g. straw, or nitrification inhibitors (NI) to reduce soil nitrogen (N) losses. However, little is known on the combined effects of straw and NI and how seasonal soil temperature variations further affect N immobilization. We conducted a 113-day mesocosm experiment with different levels of 15N-fertilizer application (N0: control; N1: 125 kg N ha−1; N2: 250 kg N ha−1) in an agricultural soil, amended with either wheat straw, NI or a combination of both in order to investigate N retention and loss from soil after a cooling-warming phase simulating a seasonal temperature shift, i.e., 30 days cooling phase at 7 °C and 10 days warming phase at 21 °C. Subsequently, soils were planted with barley as phytometers to study 15N-transfer to a following crop.

Straw addition significantly reduced soil N-losses due to microbial N immobilization. Although carbon added as straw led to increased N2O emissions at high N fertilization, this was partly counterbalanced by NI. Soil cooling-warming strongly increased ammonification (+77 %), while nitrification was suppressed, and straw-induced microbial N immobilization dominated. N immobilized after straw addition was mineralized at the end of the experiment as indicated by structural equation models. Re-mineralization in N2 was sufficient, but still suboptimal in N0 and N1 at critical times of early barley growth. N-use efficiency of the 15N tracer decreased with fertilization intensity from 50 % in N1 to 35 % in N2, and straw amendment reduced NUE to 25 % at both fertilization rates. Straw amendment was most powerful in reducing N-losses (−41 %), in particular under variable soil temperature conditions, but NI enforced its effects by reducing N2O emission (−40 %) in N2 treatment. Sufficient N-fertilization coupled with straw application is required to adjust the timely re-mineralization of N for subsequent crops.
OriginalspracheEnglisch
Aufsatznummer162007
ZeitschriftScience of the Total Environment
Jahrgang870
Anzahl der Seiten11
ISSN0048-9697
DOIs
PublikationsstatusErschienen - 20.04.2023

Bibliographische Notiz

Publisher Copyright:
© 2023 Elsevier B.V.

    Fachgebiete

  • Ökosystemforschung - 15N labelling, N immobilization, Nitrification, Nitrogen use efficiency, Soil microbial biomass, Temperature effect

DOI

Zuletzt angesehen

Publikationen

  1. Sustainability Reporting for Start ups
  2. Materialexplosion und Avantgardeanspruch
  3. Labor market adjustments after a large import shock
  4. Relationship and Participation
  5. "Hollerith" Feathered Crystal
  6. Assessing nature’s contributions to people
  7. One-third Co-determination in German Supervisory Boards and its Economic Consequences. New Evidence for Employment
  8. Environmental Governance of China's Belt and Road Initiative
  9. Weibliche Medien um 1900
  10. APPschaffung der Lehrkraft?
  11. Ecosystem Services Justice
  12. Mobile cognitive therapy
  13. Texte, Textsorten und Textvernetzung
  14. Reise mit leichtem Gepäck
  15. Neue Hoffnung für das UGB?
  16. Marktorientierte Markenbewertung
  17. Effect of biaxial compressive stress state on the microstructure evolution and deformation compatibility of rolled sheet Mg alloy AZ31 at room temperature
  18. Schreibwissenschaft methodisch
  19. “€14,875?!”
  20. Bat pest control contributes to food security in Thailand
  21. Germany must go back to its low-carbon future
  22. Tag questions across Irish English and British English
  23. Conflicting demands of chemistry and inclusive teaching—a video‐based case study
  24. Localized accelerated degradation of magnesium
  25. Gender and Diversity aspects in Engineering Education and their impact on the design of engineering curricula
  26. Vorwort
  27. Fehler beim Controlling
  28. Der Übersetzer als Performer
  29. ‚Ich sehe was, was Du nicht siehst‘
  30. The safe-and-sustainable-by-design concept
  31. NAVIGATING PROFESSIONAL CAREERS AND INTERNAL ACTIVISM
  32. Briefe schreiben in Klasse 9 und 11
  33. Kostenmanagement
  34. The Influence of Personality on Career Decisiveness of Business Students
  35. Fishing in the Amazonian Forest
  36. Eucamaragnathus desenderi, a new ground beetle species from Africa (Coleoptera, Carabidae)
  37. BAuA-Working Time Survey (BAuA-WTS)
  38. Green in grey
  39. BRANGE EFFECTS IN HEDONIC EVALUATION OF OLFACTORY STIMULI
  40. Art. 17 OECD MA