A legume-grass cover crop builds mineral-associated organic matter across variable agricultural soils

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109726 - 109726

Published: Jan. 1, 2025

Language: Английский

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Comparison of equivalent soil mass approaches to estimate soil organic carbon stocks under long-term tillage

Soil and Tillage Research, Journal Year: 2024, Volume and Issue: 238, P. 106021 - 106021

Published: Jan. 31, 2024

In agricultural ecosystems, soil organic carbon (SOC) which is affected by management practices, important for health, food security, and climate change mitigation. However, accurately assessing the influence of practices on SOC storage a challenge, due in part to uncertainty calculation approaches used estimate stocks. Although equivalent mass (ESM) widely recommended over fixed depth (FD) approach, few field studies directly compare FD with different ESM approaches. Hence, magnitude potential difference estimated stocks among not well known. Here, we collected cores (0–60 cm depth) from 24-yr experiment (Ridgetown, Ontario, Canada) investigate (1) effect two tillage systems (conventional tillage: CT, moldboard plowing ∼20 deep; no-tillage zone NT/ZT) estimates (n=448), including concentration (cubic spline interpolation model: ESMcubic_spline, linear ESMlinear, non-modeling fit: ESMnon_model); (2) relative under NT/ZT system. The stock was more pronounced than (P<0.05; except 0–5 depth), indicating that using alone appears be unreliable evaluating system effects sequestration. Furthermore, overestimated (P<0.05), mainly greater bulk density CT (P<0.05). Specifically, 0–60 depth, about 15% (or 30.6 Mg ha−1) cumulative ESMcubic_spline. differences three (ESMcubic_spline, ESMnon_model) were negligible (P>0.05; Cohen’s d<0.2), suggesting these may work equally when increment small (< 10 cm). Overall, recommend approach calculate stock, especially comparing treatments where varies. Our findings help guide policy decision-making towards quantifying considering mitigation practices.

Language: Английский

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Do rotations with cover crops increase yield and soil organic carbon?—A modeling study in southwest Germany

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 375, P. 109167 - 109167

Published: July 29, 2024

Conservation agriculture practices of crop rotation with permanent soil cover have been widely promoted for improving long-term agroecosystem resilience in the face changing climate. However, there has no comprehensive evaluation site-specific services health and yield response to improved rotations without crops (CCs) on field spatial scales. We calibrated applied a process-based agroecosystems model determine effects cropping organic N content mineralization rate, carbon (SOC) change CO2 efflux, yields. A 10-year systems dataset from six sites southwest Germany was used calibrate evaluate DSSAT provide typical management conventional farming system region as business-as-usual (BAU) scenario application. 4-year then designed inclusion commonly grown non-legume legume CCs three cycles at research surrounding region. Crop treatments provided no-CC scenario, therefore effect CC could be tested. Relative BAU no-CC, annual resulted 12% 3% higher 6% 8% SOC respectively. Additional advantage C more pronounced by while were efficient reducing leaching. Combined positive rotational observed winter wheat oilseed rape yields sites. we variability these results regional scale, suggesting environment interactions that should considered recommendations. significantly increased water productivity cereal crops, but did not produce spring barley or silage maize compared unless only certain areas are vulnerable losses. Our findings highlight sequestration potential emphasizing need agronomically environmentally sound systems.

Language: Английский

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Land use footprints and policies in Brazil

Land Use Policy, Journal Year: 2024, Volume and Issue: 140, P. 107121 - 107121

Published: March 2, 2024

Ecological footprints have been assessed widely from a resource production-consumption perspective but much less land use per capita availability-demand standpoint. The later view is key to policy because it sheds light on the need of changing or adapting uses get balance between those ecological (e.g., forests, riparian wetlands) and socioeconomic cropland) value. Thus, purpose this study was introduce LUEF – Land Use Footprint, defined as area specific occupation in region over population that pre-defined timeframe. index then applied Brazilian territory at macro resolution, 2015 2019 period. results identified deforestation, urban densification, cropland/pasture expansion forest restoration main drivers change studied period, well supporters concomitant gross domestic product. also revealed negative consequences changes for water security organic carbon stocks top layer soils (decline). Some regional metrics were proposed revert these consequences, namely control above 100 m2/hab keep National average level, cropland below 900 preserve stock regions' topsoils close (46.9 Mg/ha), reducing greenhouse gas emissions sequel. leveling LUEFs aforementioned values requires intensification ongoing initiatives relevant mitigate footprints. various examples, which included Forest Code, policies family agriculture, Payment Ecosystem Services programs, among others. Overall, recognized Brazil being right track pursue sustainable use.

Language: Английский

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Conservation Practices Boost Soil-Protected Organic Carbon Stocks in Olive Orchards

Agriculture, Journal Year: 2024, Volume and Issue: 14(8), P. 1354 - 1354

Published: Aug. 13, 2024

Carbon farming practices are pivotal for enhancing soil organic carbon (SOC) storage in agricultural systems. This study focuses on evaluating the effects of spontaneous cover crops as a conservation strategy compared to conventional management total, non-protected, and protected SOC fractions, well saturation, olive groves across 13 paired sites (26 total) Andalucía, Spain. The research evaluates concentrations different fractions: non-protected (250–2000 µm), physically (53–250 chemically (<53 µm). results reveal that managed with temporary (CC) over last 8–12 years generally exhibit higher those conventionally (BS), significant differences observed multiple sites. CC exhibited stocks, averaging 42.6 Mg C ha−1 29.7 BS, at 10.3 versus 4.8 ha−1. A direct relationship was identified between total both indicating studies orchards is far from being saturated SOC. Moreover, farms had lower saturation deficit (45.3%) BS (67.2%). findings show maintaining significantly contributed sequestration reduced deficits by increasing stocks

Language: Английский

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Solutions and insights for agricultural monitoring, reporting, and verification (MRV) from three consecutive issuances of soil carbon credits

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 369, P. 122284 - 122284

Published: Aug. 29, 2024

Regenerative agricultural practice adoption on conventionally managed fields has gained momentum as a climate mitigation strategy, given the ability of these practices to sequester carbon or reduce greenhouse gas emissions. However, geospatial and temporal variability impact specific practices, such cover cropping no-till, pose challenges for scalable quantification emissions reduction deploying incentives drive increased adoption. To quantify while accounting uncertainty at scale, Indigo Ag created monitoring, reporting, verification (MRV) pipeline produce soil credits produced large scales (hundreds thousands hectares). The ingests field data from enrolled farmers, checks quality, uses hybrid sampling biogeochemical modeling estimates uncertainty, then applies deductions based calculated leakage total project-wide monitor durability carbon. implementation project (CAR1459) 2018 2022 553,743 ha U.S. cropland utilizing is estimated have reduced by 398,408.5 tCO

Language: Английский

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Balancing legume-cereal proportions in cover crop mixtures to minimize N2O emissions

Geoderma, Journal Year: 2025, Volume and Issue: 454, P. 117195 - 117195

Published: Feb. 1, 2025

Language: Английский

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Long-term effects of tillage practices and future climate scenarios on topsoil organic carbon stocks in Lower Austria – a modelling and long-term experiment study

International Soil and Water Conservation Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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The role of transaction costs for the optimal supply of carbon sequestration from cover crops in Denmark

Carbon Management, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 5, 2025

Language: Английский

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Analysis of Land Suitability for Maize Production under Climate Change and Its Mitigation Potential through Crop Residue Management

Land, Journal Year: 2024, Volume and Issue: 13(1), P. 63 - 63

Published: Jan. 4, 2024

Land Suitability Analysis (LSA), under the impact of climate change, is a fundamental approach to design appropriate land management strategies for sustainable crop production and food security. In this study, FAO framework was used assess change on suitability maize in Flanders, Belgium. The current LSA revealed marginal cultivation, characterizing most agricultural Flanders identifying precipitation as limiting factor suitability. LSA, two scenarios, based projections from several CMIP5 Global Circulation Models, transformed into future assembled multi-model ensemble (MME) projected changes. results indicate an average reduction approximately 7% by 2099 high-emission scenario. potential Soil-Improving Cropping System (SICS) mitigate impacts statistically significant both low- scenarios. This research provides valuable insights MME modeling its associated uncertainty, with application SICS long-term mitigation measure promote practices.

Language: Английский

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