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The effect of crop residues, cover crops, manures and nitrogen fertilization on soil organic carbon changes in agroecosystems: a synthesis of reviews

Bolinder, Martin and Crotty, Felicity V. and Elsen, Annemie and Frac, Magdalena and Kismányoky, Tamás and Lipiec, Jerzy and Tits, Mia and Tóth, Zóltan and Kätterer, Thomas (2020). The effect of crop residues, cover crops, manures and nitrogen fertilization on soil organic carbon changes in agroecosystems: a synthesis of reviews. Mitigation and Adaptation Strategies for Global Change. 25 , 929-952
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Abstract

International initiatives are emphasizing the capture of atmospheric CO(2)in soil organic C (SOC) to reduce the climatic footprint from agroecosystems. One approach to quantify the contribution of management practices towards that goal is through analysis of long-term experiments (LTEs). Our objectives were to analyze knowledge gained in literature reviews on SOC changes in LTEs, to evaluate the results regarding interactions with pedo-climatological factors, and to discuss disparities among reviews in data selection criteria. We summarized mean response ratios (RRs) and stock change rate (SCR) effect size indices from twenty reviews using paired comparisons (N). The highest RRs were found with manure applications (30%,N = 418), followed by aboveground crop residue retention and the use of cover crops (9-10%,N = 995 and 129), while the effect of nitrogen fertilization was lowest (6%,N = 846). SCR for nitrogen fertilization exceeded that for aboveground crop residue retention (233 versus 117 kg C ha(-1) year(-1),N = 183 and 279) and was highest for manure applications and cover crops (409 and 331 kg C ha(-1) year(-1),N = 217 and 176). When data allows, we recommend calculating both RR and SCR because it improves the interpretation. Our synthesis shows that results are not always consistent among reviews and that interaction with texture and climate remain inconclusive. Selection criteria for study durations are highly variable, resulting in irregular conclusions for the effect of time on changes in SOC. We also discuss the relationships of SOC changes with yield and cropping systems, as well as conceptual problems when scaling-up results obtained from field studies to regional levels.

Authors/Creators:Bolinder, Martin and Crotty, Felicity V. and Elsen, Annemie and Frac, Magdalena and Kismányoky, Tamás and Lipiec, Jerzy and Tits, Mia and Tóth, Zóltan and Kätterer, Thomas
Title:The effect of crop residues, cover crops, manures and nitrogen fertilization on soil organic carbon changes in agroecosystems: a synthesis of reviews
Year of publishing :2020
Volume:25
Page range:929-952
Number of Pages:24
Publisher:Springer Nature
ISSN:1381-2386
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Soil organic carbon, Carbon sequestration, Management practices, Meta-analysis, Relative response ratio, Stock change rates
URN:NBN:urn:nbn:se:slu:epsilon-p-106851
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-106851
Additional ID:
Type of IDID
DOI10.1007/s11027-020-09916-3
Web of Science (WoS)000542065200001
ID Code:17675
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:06 Oct 2020 07:48
Metadata Last Modified:06 Oct 2020 07:51

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