A global meta‐analysis of yield‐scaled N₂O emissions and its mitigation efforts for maize, wheat, and rice

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(2)

Published: Feb. 1, 2024

Abstract Maintaining or even increasing crop yields while reducing nitrous oxide (N 2 O) emissions is necessary to reconcile food security and climate change, the metric of yield‐scaled N O emission (i.e., per unit yield) at present poorly understood. Here we conducted a global meta‐analysis with more than 6000 observations explore variation patterns controlling factors for maize, wheat rice associated potential mitigation options. Our results showed that average across all available data followed order (322 g Mg −1 , 95% confidence interval [CI]: 301–346) > maize (211 CI: 198–225) (153 144–163). Yield‐scaled individual crops were generally higher in tropical subtropical zones temperate zones, also trend towards lower intensities from low high latitudes. This was better explained by climatic edaphic fertilizer management, their combined effect predicted 70% variance. Furthermore, our analysis significant decrease use efficiency production systems cereal >10 ha (maize), 6.6 (wheat) 6.8 (rice), respectively. highlights indicators can be used as valuable proxies reconciling trade‐offs between mitigation. For three major staple crops, fertilization up 30%, optimizing timing placement application using enhanced‐efficiency fertilizers significantly reduced similar yields. data‐driven assessment provides some key guidance developing effective targeted adaptation strategies sustainable intensification production.

Language: Английский

---

Integrated Effects of Straw Incorporation and N Application on Rice Yield and Greenhouse Gas Emissions in Three Rice-Based Cropping Systems

Agronomy, Journal Year: 2024, Volume and Issue: 14(3), P. 490 - 490

Published: Feb. 28, 2024

Crop straw and N fertilizer applications impact paddy rice yield greenhouse gas (GHG) emissions. However, their interactive effects have not been well documented. This study investigated the of (S), no incorporation (NS), three levels fertilization rates (N0, N1, N2) on single (SR), double (DR), rice-wheat (RW) cropping systems. Straw significantly increased total CH4 emissions by 118.6%, 8.0%, 79.0% in SR, DR, RW, respectively, compared to NS. The GHG DR are 72.6% 83.5% higher than those RW respectively. Compared NS, yield-scaled 27.8%, 15.0%, 89.0% with application average over N1 N2 39.4%, 50.0%, 6.7% There was a significant correlation between methyl coenzyme M reductase (mcrA) rSR = 0.87 (p < 0.05) rRW 0.85 0.05), except rDR 0.06 > 0.05). scientifically supports combined moderate rate rice-based systems maintain high yields mitigate

Language: Английский

---

Functional Nanoparticle-Coated Biochar (FNs-BC)-Based Composites and Their Applications

Composites science and technology, Journal Year: 2025, Volume and Issue: unknown, P. 73 - 105

Published: Jan. 1, 2025

Language: Английский

---

Enhancing soil health through balanced fertilization: a pathway to sustainable agriculture and food security

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: April 28, 2025

Sustainable soil health management is pivotal for advancing agricultural productivity and ensuring global food security. This review comprehensively evaluates the effects of mineral-organic fertilizer ratios on microbial communities, enzymatic dynamics, functional gene abundance, holistic health. By integrating bioinformatics, enzyme activity assays, metagenomic analyses, we demonstrate that balanced fertilization significantly enhances diversity, community stability, resilience against environmental stressors. Specifically, synergistic application mineral organic fertilizers elevates β -glucosidase urease activities, accelerating matter decomposition nutrient cycling while modulating taxa critical transformation pathogen suppression. Notably, replacing 20–40% with alternatives mitigates risks such as greenhouse gas emissions leaching sustaining crop yields. dual approach improves structure, boosts water retention capacity, increases biomass by 20–30%, fostering long-term fertility. Field trials reveal yield 25–40% in crops like rice maize under combined fertilization, alongside enhanced carbon (110.6%) nitrogen content (59.2%). The findings underscore necessity adopting region-specific, strategies to optimize ecological sustainability productivity. Future research should prioritize refining frameworks through interdisciplinary approaches, addressing soil-crop-climate interactions, scaling these practices diverse agroecosystems. aligning policies principles, stakeholders can safeguard health—a cornerstone human wellbeing—while securing resilient systems future generations.

Language: Английский

---

Trade‐off between soil carbon sequestration and net ecosystem economic benefits for paddy fields under long‐term application of biochar

GCB Bioenergy, Journal Year: 2023, Volume and Issue: 16(1)

Published: Dec. 18, 2023

Abstract The application of biochar and nitrogen fertilizer can increase rice yield, soil organic carbon (SOC) storage reduce greenhouse gas (GHG) emissions. However, few studies have systematically evaluated the footprint (CF) net ecosystem economic benefits (NEEB) paddy ecosystems under long‐term fertilizer. Here, life cycle assessment method was used to quantify CF NEEB fields different rates in 7 years. Three 0 (B0), 4.5 (B1) 13.5 t ha −1 year (B2) two (N0) 300 kg (N) were set. results showed that B2 significantly increased methane (CH 4 ) emission by 38%, decreased nitrous oxide (N 2 O) 29%, global warming potential 27% compared with B0. Besides that, ΔC SOC 87%–173% reduced 1.6–1.8 Mg CO eq . Among them, CH N O emissions contributed 46%–95% total GHG emissions, production transportation 17%–52% Nitrogen yield 85% N0, which could bring largest NEEB. Biochar had a negative influence on regardless application. This might be attributable fact gains from caused cannot outweigh high cost biochar. These suggest improve sequestration CF, but also effect filed.

Language: Английский

---

Rice straw incorporation and Azolla application improves agronomic nitrogen-use-efficiency and rice grain yields in paddy fields

Frontiers in Soil Science, Journal Year: 2024, Volume and Issue: 4

Published: May 21, 2024

In paddy soils, excessive application of N fertilizer often results in substantial losses due to low utilization efficiency. However, this condition can be mitigated by enhancing soil organic carbon content. Two-year field experiment was carried out at Mkula Irrigation Scheme Kilombero Valley, Tanzania with the aim investigating impact Azolla, rice straw incorporation and reduced levels nitrogen input from NPKS-containing fertilizers on use efficiency, chemical properties grain yield. Assuming that technology will introduce a novel perspective research, shedding light alternative potentially more sustainable methods for management it particularly relevant sub-Saharan Africa, where annual cost is expected continue rising. The treatments involved absolute control, half dose (50 kg ha -1 ), full (100 combination these doses PKS, dry Azolla (3.4 t ) (6.9 through omission approach. experimental area sandy clay loam texture, very strongly acid (pH 4.8), normal electrical conductivity (0.06 dS m amounts recorded (1.35%), total (0.33%), 0.68 mg −1 available P, exchangeable potassium (0.15 cmol (+) calcium (0.19 sodium percentage (3.75%), cation exchange capacity (1.6 ). showed +100 + 30 P K 20 S resulted higher yield, uptake agronomic efficiency N. being an effective biofertilizer, significantly contributes fixation enrichment. Interestingly, study demonstrates co-application straw, 50% achieving high yields, minimizing over-dependence fertilizer, agricultural development, environmental conservation.

Language: Английский

---

Enhancing crop yield and microbial diversity in saline-affected paddy soil through biochar amendment under aquaculture wastewater irrigation

European Journal of Soil Biology, Journal Year: 2024, Volume and Issue: 123, P. 103681 - 103681

Published: Sept. 26, 2024

Language: Английский

---

Nitrification and urease inhibitors mitigate global warming potential and ammonia volatilization from urea in rice-wheat system in India: A field to lab experiment

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 898, P. 165479 - 165479

Published: July 17, 2023

Language: Английский

---

Biochar amendments to tropical paddy soil increase rice yields and decrease N2O emissions by modifying the genes involved in nitrogen cycling

Soil and Tillage Research, Journal Year: 2023, Volume and Issue: 235, P. 105917 - 105917

Published: Oct. 10, 2023

Language: Английский

---

Biochar Can Partially Substitute Fertilizer for Rice Production in Acid Paddy Field in Southern China

Agronomy, Journal Year: 2023, Volume and Issue: 13(5), P. 1304 - 1304

Published: May 6, 2023

Biochar application has been confirmed as an efficient way to increase the productivity of agricultural system. However, potential biochar combined with reducing fertilization on yield, and fertilizer utilization efficiency rice (Oryza sativa) farming system acidic soil remains be further studied. Field micro-plot experiments two factors were performed in 2018 2019 evaluate responses yield nutrient (60, 80, 100 t/ha) reduction (70%, 85%, standard doses N-P-K fertilizer). Taoyouxiangzhan Taiyou 553 used late growing season 2019, respectively. The results showed that compared control without adding under fertilization, 70% had no negative effects N, P, K accumulation after application. increased partial fertilizers was decreased. agronomic significantly applications fertilizer. In both years, micro-plots highest N P physiological efficiency, well 2019. Compared different combinations by 34.24~75.48%, 27.44~84.84%, 78.52~166.70%, To sum up, can partially substitute for production acid paddy fields southern China. When amount added is ≥60 t/ha, still ensure absorption rice, improve stable rice.

Language: Английский

---