Long‐term agricultural practice effects on carbon and nitrogen isotopes of soil organic matter fractions

Autor: Johan Desrochers, Kristofor R. Brye, Erik D. Pollock
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Agrosystems, Geosciences & Environment, Vol 5, Iss 1, Pp n/a-n/a (2022)
Druh dokumentu: article
ISSN: 2639-6696
DOI: 10.1002/agg2.20232
Popis: Abstract Understanding the effects of long‐term traditional and alternative agricultural management practice effects on carbon (C) and nitrogen (N) cycling and storage within particulate organic matter (POM) and light fractions (LF) within various soil aggregate‐size classes can be illuminated by isotopic 13C/12C (δ13C) and 15N/14N (δ15N) differences. The objective of this study was to evaluate the effects of residue level, residue burning, tillage, and irrigation on δ13C and δ15N values of the bulk‐soil, macro‐ (>250 μm) and micro‐aggregate‐(53–250 μm), coarse‐ (>250 μm), and fine‐ (53–250 μm) POM, and coarse‐ and fine‐LF in the top 10 cm following 13 yr of consistent management in a wheat (Triticum aestivum L.)–soybean [Glycine max (L.) Merr.] double‐crop system on a silt‐loam soil in eastern Arkansas. Various treatment combinations affected (p
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