Integrating green manure and fertilizer reduction strategies to enhance soil carbon sequestration and crop yield: evidence from a two-season pot experiment

Frontiers in Sustainable Food Systems, Journal Year: 2025, Volume and Issue: 8

Published: Jan. 14, 2025

The excessive use of chemical fertilizers in agricultural production has led to diminishing returns, necessitating alternative methods enhance soil fertility and reduce fertilizer dependency. One promising approach is the integration leguminous green manure, which improves structure, enhances nutrient cycling, supports sustainable farming practices. However, application manure systems with continuous reduction remains underexplored. This study addresses this gap by investigating effects reducing nitrogen phosphorus (N-P) up 24% conjunction multiple cropping soybean on fertility, organic carbon fractions, wheat yield. research employed a pot experiment conducted over two wheat-growing seasons (March 2021 July 2022) at an experimental station Baoji, China. Treatments included CK (control, no fertilizer), CF (conventional reduced N-P applications 6% (RF6), 12% (RF12), 18% (RF18), (RF24). Key findings revealed that RF12 had significant impact grain yield compared CF. incorporation significantly improved alkaline 22.3% available 30.7%, while high-labile (H-LOC) microbial biomass (MBC) increased 34.5 29.6%, respectively. Additionally, notable increase 12.4% content was observed, suggesting enhanced sequestration potential. provides valuable insights into practices demonstrating incorporating alongside moderate can maintain crop yield, improve availability, content, thus supporting reliance promoting long-term sequestration.

Language: Английский

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Green Manure Mediated Improvement in Saline Soils in China: A Meta-Analysis

Agronomy, Journal Year: 2024, Volume and Issue: 14(9), P. 2068 - 2068

Published: Sept. 10, 2024

The application of green manure is a traditional and valuable practice to improve the fertility saline soil. However, impact environmental factors, types returning methods on changes in soil salinity remain poorly quantified at large scale. In present study, we conducted meta-analysis generate comprehensive evaluation effects organic carbon (SOC), salt content, nutrients compared bare China. results showed that with soil, planting could significantly increase SOC content reduce total nitrogen (N), available phosphorus (P) potassium (K) contents. On average, enhanced by 34.82% (percentage change), N 32.23%, P 34.34% K 17.43%, while reducing 47.75%, areas mean annual temperature (MAT) <10 °C or precipitation (MAP) 200–400 mm, had largest SOC, N, P, K. smallest increases were observed an MAT above 15 MAP greater than 800 mm. Green influenced improvement effect mixtures more conducive resulting from mixed lower comparison those both legumes non-legumes. addition, initial experimental years, method Therefore, this identified as promising for improved

Language: Английский

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Substituting leguminous crops for summer maize with optimal nitrogen fertilization strategies to improve soil ecosystem multifunctionality and crop production in semi-humid region

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Legume crop rotation and moderate nitrogen application have been widely recognized in maintaining production improving soil quality. However, the mechanism of how soybean stubble combined with appropriate reduction regulates winter wheat growth, uptake, especially ecosystem multifunctionality (EMF), remain unclear. Therefore, a two-year field experiment was conducted using three different preceding crops (Fallow-F, Soybean-B Maize-M) rates (N0, N1 N2) to investigate effects legume pre-crops reduced input on root above-ground dry matter accumulation distribution, uptake utilization, as well impact yield EMF within cropping system. Compared F M stubbles, B significantly promoted aboveground underground growth wheat, increased by 27.48% 33.35%, respectively. With increase rate, absorption under each stubble, agronomic efficiency (NAE) higher than N2 at level. also improved yield, annual economic benefits EMF, best performance observed N1, where BN1 were average 70.87% higher, 4.17 times other treatments. Pearson correlation analysis revealed positive relationships between weight (RWD), biomass grain accumulation, yield. These findings highlight close relationship while revealing importance This study provides theoretical support for incorporating legumes into systems reduce chemical fertilizer use enhance multifunctionality.

Language: Английский

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Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem

Resources Environment and Sustainability, Journal Year: 2025, Volume and Issue: unknown, P. 100202 - 100202

Published: Feb. 1, 2025

Language: Английский

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Green manure roots return drives saline-alkali soil organic carbon accumulation via microbial necromass formation

Soil and Tillage Research, Journal Year: 2025, Volume and Issue: 251, P. 106550 - 106550

Published: March 13, 2025

Language: Английский

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Mechanistic Insights into Farmland Soil Carbon Sequestration: A Review of Substituting Green Manure for Nitrogen Fertilizer

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1042 - 1042

Published: April 26, 2025

Sustainable agricultural intensification requires innovative approaches to simultaneously enhance productivity and mitigate environmental impacts—a challenge critical global food security climate change mitigation. The traditional fertilization system, with a single application of nitrogen fertilizer, while effective for crop yields, often leads soil organic carbon (SOC) depletion, whereas green manure systems offer dual benefit supply SOC sequestration potential. However, the mechanisms by which substitution enhances (SCS) remain systematically underexplored in comparison chemical fertilization. This review examines (1) underlying sequestration, (2) losses associated practices, (3) theoretical foundation practical applications as fertilizer substitute. We provide an in-depth analysis through drives SCS. Furthermore, we identify three areas future investigation: (i) optimization management strategies SCS efficiency; (ii) comprehensive assessment manure’s ecological benefits long-term, multi-scale studies; (iii) evaluation adaptation capacity potential across diverse climatic scenarios. These findings fundamentally advance our understanding role sustainable agriculture establishing its function both source driver. In addition, these insights have immediate relevance policy practice, particularly regions where health storage are prioritized alongside yield.

Language: Английский

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The fate of nitrogen derived from green manure and its influence on crop N agronomic performance

European Journal of Agronomy, Journal Year: 2025, Volume and Issue: 168, P. 127646 - 127646

Published: April 18, 2025

Language: Английский

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Global comprehensive evaluation shows that green manure enhances crop productivity while mitigating gaseous nitrogen losses

Resources Conservation and Recycling, Journal Year: 2025, Volume and Issue: 220, P. 108351 - 108351

Published: May 5, 2025

Language: Английский

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Interactive effects of ammonium sulfate and lead on alfalfa in rare earth tailings: Physiological responses and toxicity thresholds

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 947, P. 174439 - 174439

Published: July 4, 2024

Language: Английский

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Effect of nitrogen reduction combined with biochar application on soda saline soil and soybean growth in black soil areas

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Sept. 20, 2024

The combination of biochar and nitrogen (N) fertilization in agricultural salt-affected soils is an effective strategy for amending the soil promoting production. To investigate effect reduction combined with application on a soda saline soybean growth black areas, pot experiment was set up two levels, 0 (B0) 4.5 t/hm2 (B1); depths, 0-20 cm (H1) 0-40 (H2); conventional (N0) 15% (N1). results showed that improved status significantly increased yield under lower application. Moreover, increasing depth enhanced effectiveness reducing barriers to crop growth, which promoted growth. Increasing K+ Ca2+ contents, content, N fertilizer agronomic efficiency, leaf total nitrogen, use AN, Tr, gs, SPAD, water potential, content its components. However, Na+ SAR, ESP, Na+/K+, Ci efficiency decreased depth. Among treatments low input biochar, B1H1N1 resulted greatest improvement layer compared B0N0; example, by 61.87%, 44.80%, SAR 46.68%, nitrate 26.61%. 20-40 layer, B1H2N1 had improving physicochemical properties, 62.54%, 29.76%, 32.85%, 30.77%. In addition, B0N0, 25.07%, 6.7%, 32.79%, partial factor productivity 28.37%, gs 22.10%, potential 27.33% 6.44%. conclusion, condition soil; it not only effectively regulated distribution salt provided low-salt environment but also activated deep resources. Therefore, among all investigated this study, considered most suitable areas enhancing plants.

Language: Английский

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