Short‐term effects of Kernza and alfalfa on microbial communities DOI Creative Commons
Ranjith P. Udawatta,

Biyensa Gurmessa,

Miguel Salceda

et al.

Agrosystems Geosciences & Environment, Journal Year: 2024, Volume and Issue: 7(2)

Published: May 16, 2024

Abstract Continuous land disturbance could negatively impact microbial community, but perennial crops can potentially reverse this negativity. The objective of study was to evaluate the effects Kernza ( Thinopyrum intermedium ) and alfalfa Medicago sativa L.) on soil structure stress condition using phospholipid fatty acid profiling. conducted at Ross Jones Research Farm, University Missouri consisted four treatments: fertilized, unfertilized, intercrop, monocrop with replications. Treatments were established in September 2021 18.3 m × plots. Soils from 0‐ 5‐cm 5‐ 15‐cm depths sampled (before treatments placed) 2022 analyzed for communities. All communities increased after 1 year crops. Since differences not significant among 2022, may lead positive impacts communities, irrespective crop species management. Moreover, community modifications also observed crops, management, as evidenced changes bacterial indices 2022. While fungi/bacteria ratio increased, Gram‐positive/Gram‐negative bacteria decreased suggesting a reduction stress, which be attributed ecological functions showed improvements biomass alfalfa. As system matures, relative benefits management (fertilization intercropping) plant realized.

Language: Английский

Perennial cropping systems increased topsoil carbon and nitrogen stocks over annual systems—a nine-year field study DOI Creative Commons
Yiwei Shang, Jørgen E. Olesen, Poul Erik Lærke

et al.

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 365, P. 108925 - 108925

Published: Feb. 9, 2024

Enhancing biomass yield simultaneously with soil carbon (C) sequestration is a key aim of climate-smart cropping systems. Perennialization believed to be suitable mitigation strategy for climate change the potential enhancing C stocks. Based on nine-year field experiment in Denmark, we measured changes and nitrogen (N) stocks, yield, stability three perennial (low-fertilized miscanthus, high-fertilized festulolium, no N-fertilized grass-legume mixture) two annual (continuous triticale maize) We found that topsoil (0–20 cm) 0–100 cm stocks N varied significantly between Over nine years, increased by an average 1.4 Mg ha−1 systems, while they decreased 3.4 The 6.8 systems 2.3 system, but 2.5 maize system. Topsoil 0.18 0.08 Changes did not differ Miscanthus, showed highest (17.1, 16.7, 16.4 year−1, respectively). There were significant differences among stability. This study demonstrated obtaining higher compared maintaining high supporting perennialization as promising option agriculture.

Language: Английский

Citations

10
Soil carbon maintained by perennial grasslands over 30 years but lost in field crop systems in a temperate Mollisol DOI Creative Commons
Clarissa L. Dietz, Randall D. Jackson, Matthew D. Ruark

et al.

Communications Earth & Environment, Journal Year: 2024, Volume and Issue: 5(1)

Published: July 3, 2024

Abstract To mitigate climate change, some seek to store carbon from the atmosphere in agricultural soils. However, our understanding about how agriculture affects soil organic is muddied by studies (1) lacking longitudinal data, (2) ignoring bulk density changes, or (3) sampling only surface better understand trends, here we measured changes over 30 years density-corrected, full-soil-depth (90 cm) stocks under 6 cropping systems and a restored prairie Mollisol of southern Wisconsin, USA. Cash-grain alfalfa-based lost carbon. Prairie rotationally-grazed pasture maintained Average losses for cash-grain were −0.80 (±0.12) −0.54 (±0.13) Mg C ha −1 yr , respectively. Sensitivity analysis showed that incomplete methodologies overestimated improvements. Our findings using more comprehensive methods demonstrate inadequacy row-crop need well-managed grasslands protect productive soils Upper Midwest

Language: Английский

Citations

10
Potential U.S. Production of Liquid Hydrocarbons From Biomass With Addition of Massive External Heat and Hydrogen Inputs DOI Creative Commons

Thomas Charlton,

Charles Forsberg, Bruce E. Dale

et al.

GCB Bioenergy, Journal Year: 2025, Volume and Issue: 17(2)

Published: Jan. 28, 2025

ABSTRACT We estimate the U.S. potential to convert biomass into liquid hydrocarbons for fuel and chemical feedstocks, assuming massive low‐carbon external heat hydrogen inputs. The is first a carbon feedstock only secondarily an energy source. This analysis done three estimates of available derived from 2023 Department Energy/U.S. Agriculture “Billion‐Ton Report” two augmented cases with maximum annual production 1326, 4791, 5799, 7432, 8745 million barrels diesel equivalent per year five cases. Constraints, such as assuring long‐term soil sustainability by recycling nutrients some back soils, result in being 70%–80% these numbers. currently consumes about 6900 year. Long‐term hydrocarbon consumption are between 50% 75% current consumption. External additions conversion processes are, respectively 25, 91, 111, 142, 167 tons system strongly negative because nutrient soils improve productivity.

Language: Английский

Citations

2
Crop Rotation With Ley and Nitrogen Fertilisation Reduced Soil Carbon Loss in Three Swedish Long‐Term Field Experiments DOI Creative Commons
Rong Lang, Martin A. Bolinder, Gunnar Börjesson

et al.

European Journal of Soil Science, Journal Year: 2025, Volume and Issue: 76(1)

Published: Jan. 1, 2025

ABSTRACT Increasing soil organic carbon (SOC) stocks by improving cropland management practices has great potential to mitigate climate change. Long‐term field experiments (LTEs) are valuable study effects on properties and crop yield. Yet most LTE studies limited the topsoil, farming systems integrating multiple strategies often not assessed. This used three Swedish LTEs assess of rotations fertilisation SOC changes. One arable rotation with only annual crops a ley annuals, perennial receiving manure were investigated at different application rates mineral fertilisers. We analysed changes in content distribution depths, calculated C inputs phospholipid fatty acids (PLFAs) evaluate how affected relation microbial communities. Both lost 0–20 cm topsoil from 1966 2019 across sites, but sandy site more than clayey sites. The nitrogen (N) reduced losses. In 2019, top 25 3.3 ± 1.6 Mg ha −1 higher compared 2.9 N highest rate no fertilisation. However, positive decreased depth became negative some depths. As result, differences an equivalent 60 declined 0.6 2.4 for 1.0 had significantly belowground rotation, highly associated SOC. Compared total PLFAs, bacterial PLFAs ratio bacteria fungi partly attributed application. Our supports beneficial leys amendments crops. It also highlights risk losing subsoil, especially under Site characteristics helped explain large variation, which must be considered when developing local accrual cropland.

Language: Английский

Citations

1
Deep soil organic carbon: A review DOI
José Carlos Batista Dubeux, M. A. Lira, Flávia Fernanda Simili

et al.

CABI Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: July 4, 2024

Abstract Soil organic carbon (SOC) sequestration promotes several ecological, economic, and social co-benefits. However, most SOC studies rely on topsoil evaluations (0–30 cm), disregarding a significant fraction of the that is stored in deep layers. Understanding relationship between soil climate change imperative guiding sustainable land management practices, informing mitigation strategies, preserving crucial role regulating atmospheric CO 2 levels. We conducted comprehensive literature review to discuss origins carbon, globally standardized methodology recommended for measuring stocks, mechanisms controlling (physical, chemical, biochemical) layers, significance microbial community advancements radiocarbon studies, impact practices SOC, influence stocks. Overall, more empirical data long-term are needed address knowledge gaps terms advance our understanding shaping global cycles resilience. The main challenges accurate estimations budgets high spatial variability, relative lack measurements, need reliable reference modeling improvements. A practical bulk density (BD) estimation layers (i.e., 30–100 cm) improve accuracy C stock should be addressed further studies. Modeling approaches based sensors machine learning techniques promising tools overcome this challenge. there still large variability methods measure report BD stocks worldwide, preventing advances.

Language: Английский

Citations

5
Patterns and determinants of microbial- and plant-derived carbon contributions to soil organic carbon in tea plantation chronosequence DOI
Quan Tang, Wei Li,

Wenxia Dai

et al.

Plant and Soil, Journal Year: 2024, Volume and Issue: unknown

Published: May 12, 2024

Language: Английский

Citations

4
Early impacts of marginal land‐use transition to Miscanthus on soil quality and soil carbon storage across Europe DOI Creative Commons
Marta Bertola, Elena Magenau, Enrico Martani

et al.

GCB Bioenergy, Journal Year: 2024, Volume and Issue: 16(6)

Published: May 20, 2024

Abstract Miscanthus , a C 4 perennial rhizomatous grass, is low‐input energy crop suitable for marginal land, which cultivation can improve soil quality and promote organic carbon (SOC) sequestration. In this study, four promising hybrids were chosen to evaluate their short‐term potential, in six European sites, sequester SOC physical, chemical, biological topsoil. Overall, no differences among detected terms of impacts on sequestration rate after years was +0.4 Mg ha −1 year but land‐use transition from former cropland or grassland showed contrasting trajectories. unfertilized lands, high‐yielding genotypes caused depletion K (−216 kg ), followed by Ca (−56 (−102 ) lesser extent N. On the contrary, turnover matter increased available P content (+164 2 O 5 ). identified as main driver changes quality. High input labile plant stimulated an increment microbial biomass enzymatic activity. Here, novel approach applied estimate different organs. Despite high estimated (0.98 with significant sites hybrids, it not initial nutrients (N, P) content, well elemental stoichiometric ratios C, key factors controlling dynamics. Introducing lands positively over short term, targeted fertilization plans are needed secure yield long term sink capacity cropping system.

Language: Английский

Citations

4
Carbon Stock Dynamics in Biosphere Reserves and Mountainous Forest Ecosystems DOI Creative Commons
Ermias Debie, Tesfaye Wasihun Abro

Trees Forests and People, Journal Year: 2025, Volume and Issue: unknown, P. 100789 - 100789

Published: Jan. 1, 2025

Language: Английский

Citations

0
Predicting bulk density in Brazilian soils for carbon stocks calculation: a comparative study of multiple linear regression and Random Forest models using continuous and categorical variables DOI Creative Commons
Wharley Pereira dos Santos, Carlos Manoel Pedro Vaz,

Ladislau Martin‐Neto

et al.

Discover Soil., Journal Year: 2025, Volume and Issue: 2(1)

Published: Feb. 3, 2025

Language: Английский

Citations

0
Estimating Soil Carbon Sequestration Potential in Portuguese Agricultural Soils Through Land-Management and Land-Use Changes DOI Open Access

Mariana Raposo,

Paulo Canaveira,

Tiago Domingos

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(3), P. 1223 - 1223

Published: Feb. 3, 2025

Soil carbon sequestration (SCS) is a nature-based, low-cost climate mitigation strategy that also contributes to the adaptation of agricultural systems. Some land-use and land-management practices potentially lead an enhancement soil organic (SOC) sink, such as no-till, use cover crops, leaving residues on fields, improving variety legume species in grasslands reducing grazing intensity. However, uncertainties remain both estimating measuring impact application certain practices, these vary with soil, historic land use. IPCC (Intergovernmental Panel Climate Change) guidelines are commonly used estimate SOC potentials at different tiers. Here, IPCC’s tier 1 methodology was applied (1) potential nine (2) emission or four current land-change trends for n = 7092 unique sites mainland Portugal. The conversion irrigated crops improved resulted highest average unit (1.05 tC ha−1 yr−1), while cropland poor degraded pasture (abandonment) loss (−0.08 yr−1). abandonment results national up 0.09 MtC yr−1, improvement pastures has potential, equal 0.6 yr−1 (2.2 MtCO2eq about 4% Portugal’s emissions 2021, if all managed areas. enable comparison between uses; however, enhance accuracy, higher tailored Portuguese context should be developed.

Language: Английский

Citations

0