Biological soil quality and soil organic carbon change in biodynamic, organic, and conventional farming systems after 42 years

Agronomy for Sustainable Development, Journal Year: 2022, Volume and Issue: 42(6)

Published: Dec. 1, 2022

Abstract Soils are the basis of life on land and ways in which we manage them for crop production, impact their role, functions quality. Conventional farming uses industrial inputs to a level that is economically justified, whilst organic systems avoid mineral fertilizers synthetic chemical pesticides. This study investigates long-term effect conventional soil The DOK trial (bio D ynamic, bio O rganic, K onventionell (German conventional)) running since 1978 Therwil (CH), compares bioorganic (BIOORG), biodynamic (BIODYN), (CONFYM) at two farmyard manure intensities corresponding 0.7 1.4 livestock units per hectare with purely fertilized system (CONMIN) an unfertilized control (NOFERT). treatments vary plant protection receive system-specific matter differing rate With this work, revisit carbon (SOC) dynamics across 42 years redefine previous perception mainly declining SOC contents after 21 management (Fliessbach et al. 2007). After years, found be increased BIODYN lesser extent also BIOORG 1.4. CONFYM showed stable contents, while CONMIN lost SOC. loss was highest NOFERT. Enhanced biological quality under particularly highlights close link between biology changes. detectable 2 decades continuous management. We conclude recycling permits maintenance levels composting manure, as performed 1.4, helps further increase improve

Language: Английский

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Adaptive evaluation for agricultural sustainability of different fertilizer management options for a green manure-maize rotation system: Impacts on crop yield, soil biochemical properties and organic carbon fractions

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 908, P. 168170 - 168170

Published: Nov. 3, 2023

Language: Английский

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Soil organic carbon sequestration in agricultural long-term field experiments as derived from particulate and mineral-associated organic matter

Geoderma, Journal Year: 2023, Volume and Issue: 434, P. 116472 - 116472

Published: April 19, 2023

Soil organic matter (SOM) is indispensable for soil health and, in the context of climate change, considered a significant CO2 sink. Improving agricultural management to increase long-term carbon (SOC) stocks mitigating change requires tools that estimate short and long-cycling SOM pools. In this study, we analyzed changes fast-cycling particulate (POM) slow-cycling mineral-associated (MAOM) induced by common practices, i.e., fertilization crop rotation topsoils from 25 Central European field experiments. When relating MAOM-C contents recent saturation levels, estimated sequestration potentials were only met coarse-textured soils under appropriate or fine-textured extreme fertilization. texture, fertilization, below-ground OC inputs through root exudates biomass decisive estimating MAOM-C, allowing calibration mixed-effects model (Nakagawa's: marginal R2m = 0.6, conditional R2c 0.89). While models containing texture parameters can be validated generalized (R2 0.43), input predictor substantially decreases generalizability 0.14). According quantile regression models, average difference concentration between well-managed control site (without fertilization) 4.1 mg g−1 soil. dependence on bulk density, amounts 1.38 – 1.84 t ha−1 5.06 10.1 CO2-equivalents. POM-C was difficult predict 0.28), presumably due strong POM dynamics. The / ratio inform effects practices before/after comparisons. Under increasing SOC concentration, an indicates do not transfer real sequestration. Because depends also covariate limiting it comparisons sites with different textures. However, our data indicate experiment constantly approximate when POM-C/MAOM-C >0.35. This might used as goal prevent over-fertilization N loss, especially soils. Thereby, help optimize support mitigation strategies Europe.

Language: Английский

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A review of the carbon sequestration potential of fruit trees and their implications for climate change mitigation: The case of Ethiopia

Cogent Food & Agriculture, Journal Year: 2024, Volume and Issue: 10(1)

Published: Jan. 8, 2024

Carbon sequestration is defined as the process of capturing and storing atmospheric carbon dioxide. Fruit crops are indispensable both for climate change mitigation ensuring food security. However, impact fruit trees not adequately investigated. This review assesses potential their implications mitigation. use photosynthesis to absorb CO2 from atmosphere assimilate it into cellulose, lowering buildup. Horn Africa most vulnerable region change, Ethiopia also facing unpredictable weather, which brings sporadic floods droughts that harm agricultural sectors. Dramatic rise 280 ppm in 1850 420.2 ± 0.5 2023 reported link with human activity. In Ethiopian farms, multipurpose rarely cultivated, only experience planting homestead areas. Even though have an enormous store carbon, destruction those results greenhouse gas. Tree plants, including trees, thought 0.42 0.65 pentagrams per year. Above- below-ground biomasses been described sink more than 40% carbon. Agroforestry practices should adopt all species on basis growing stratum. Therefore, order oblige countries versatile meet nutrition security, sequestration, efforts political economic sustainability.

Language: Английский

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Sediment particle size distribution, source of organic matter and environmental implications in the Liao River, northeast China

CATENA, Journal Year: 2025, Volume and Issue: 249, P. 108696 - 108696

Published: Jan. 5, 2025

Language: Английский

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Organic cropping systems alter metabolic potential and carbon, nitrogen and phosphorus cycling capacity of soil microbial communities

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109737 - 109737

Published: Feb. 1, 2025

Language: Английский

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Augmenting the stability of soil aggregate carbon with nutrient management in worldwide croplands

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 370, P. 109052 - 109052

Published: April 30, 2024

Language: Английский

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THE IMPORTANCE OF SOIL ORGANIC MATTER (SOM) ON SOIL PRODUCTIVITY AND PLANT GROWTH

Biological and Agricultural Sciences Research Journal, Journal Year: 2023, Volume and Issue: 2023(1), P. 11 - 11

Published: May 3, 2023

Soil organic matter (SOM) is vital to soil health and plays a critical role in crop production. This review paper examines the impact of SOM on health, production, challenges opportunities associated with managing SOM. The emphasizes importance interdisciplinary research, technological advancements, supportive policies addressing dynamics management complexities. highlights nutrient supply, structure improvement, water-holding capacity, microbial activity enhancement, which are fundamental for sustainable agricultural systems. Various practices enhance SOM, including amendments, cover cropping, conservation tillage, rotation, discussed. Despite benefits such as slow formation rates, trade-offs other objectives, economic viability exist. Addressing these requires further knowledge exchange, integrating traditional modern technologies. Future perspectives research needs include advancing collaboration, harnessing emerging technologies, understanding interactions between climate change, exploring novel practices, quantifying ecosystem services, gaps, providing policy support incentives. Sustainable strategies can be developed by embracing identified needs. These optimize levels, promote productivity, contribute global food security environmental sustainability. Overall, this provides valuable insights researchers, policymakers, stakeholders their efforts agriculture.

Language: Английский

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Dynamic stability of mineral-associated organic matter: enhanced stability and turnover through organic fertilization in a temperate agricultural topsoil

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 184, P. 109095 - 109095

Published: June 18, 2023

Soil organic matter (SOM) plays a vital role for soil quality, sustainable food production and climate change mitigation. It is common knowledge that SOM consists of different pools with varying qualities, quantities, turnover times. However, it still poorly understood how mineral fertilization affects the formation stabilization mineral-associated (MAOM) long can remain there. Here, we report on long-term effects farming systems stability fine silt clay-sized MAOM fraction (<6.3 μm) Haplic Luvisol (0–20 cm) in DOK trial (Switzerland). We compared three contrasting (CONMIN = pure mineral, CONFYM + organic, BIODYN organic) an unfertilized control (NOFERT) between 1982 2017. performed specific surface area (SSA) measurements fractionated samples from to 2017, before after removal OM, measured 14C activity selected during entire period estimated mean residence time (MRT) model taking into account 'bomb 14C' radioactive decay. found constant MAOM-C contents under fertilization. Results SSA analysis indicate best conditions sorption mechanisms without The modelled MRTs were significantly higher NOFERT (238 ± 40 yrs) CONMIN (195 27 yrs), (138 18 (140 19 implying high C (i.e. more active MAOM) at Our findings show not dead OM but corroborates concept 'dynamic stability'. Continuous inputs fertilizers their rapid are needed stabilize "stable" fraction.

Language: Английский

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Effects of fertilizer application on phthalate ester pollution and the soil microbial community in plastic-shed soil on long-term fertilizer experiment

Chemosphere, Journal Year: 2022, Volume and Issue: 308, P. 136315 - 136315

Published: Sept. 7, 2022

Language: Английский

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