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

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Explore the evolution of winter wheat production and its response to climate change under varying precipitation years in the Loess Plateau of China

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 309, P. 109335 - 109335

Published: Feb. 4, 2025

Language: Английский

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Monitoring Key Wheat Growth Variables by Integrating Phenology and UAV Multispectral Imagery Data into Random Forest Model

Remote Sensing, Journal Year: 2022, Volume and Issue: 14(15), P. 3723 - 3723

Published: Aug. 3, 2022

Rapidly developing remote sensing techniques are shedding new light on large-scale crop growth status monitoring, especially in recent applications of unmanned aerial vehicles (UAVs). Many inversion models have been built to estimate variables. However, the present methods focused building for each single stage, and features generally used vegetation indices (VI) or joint VI with data derived from UAV-based sensors (e.g., texture, RGB color information, canopy height). It is obvious these either limited a stage an unstable performance across stages. To address issues, this study selected four key wheat parameters inversion: above-ground biomass (AGB), plant nitrogen accumulation (PNA) concentration (PNC), nutrition index (NNI). Crop multispectral were acquired five Then, band reflectance obtained data, along stages that recorded as phenology indicators (PIs) according Zadok’s scale. These three types formed six combinations (C1–C6): C1 all reflectances, C2 VIs, C3 bands C4 PIs, C5 VIs C6 bands, Vis, PIs. Some integrated PIs verify if can improve model accuracy. Random forest (RF) was build different evaluate feature importance. The results showed good modeling parameters, such R2 0.6 0.79 NRMSE 10.51 15.83%. optimized understand importance better estimations potential using minimize while still achieving predictions. Finally, varied evaluated analyze their performances fertilizer treatments. at treatments (R2 > 0.6). This paper provides reference monitoring estimating based UAV imagery information.

Language: Английский

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Response of greenhouse gases emissions and yields to irrigation and straw practices in wheat-maize cropping system

Agricultural Water Management, Journal Year: 2023, Volume and Issue: 282, P. 108281 - 108281

Published: March 20, 2023

Global water shortages and appropriate crop residues management are the major issues threatening sustainable development of agriculture, food security, environment. In this study, we conducted a one-year field experiment (in 2020–2021) to investigate annual yield, greenhouse gas (GHG) emissions, global warming potential (GWP) intensity (GHGI) in wheat-maize cropping system. Straw practices were kept main plot, including straw incorporation (SI) removal (SR). Irrigation allocated into sub-plots, surface drip irrigation (DI), sub-surface (SDI), partial rootzone (PRI), flood (FP). All treatments fertilized at level 210 kg N ha–1 for each season. The soil acted as net sink CH4 but source N2O emissions during growth period under all treatments. highest direct GHGs, GWP, GHGI found FP compared with other SI or SR. significantly increased yield (5.0%), emission (17.1%) ΔSOC (119.9%), decreased (19.4%) GWPd (19.6%), thus resulting GWP reduction 23.6% SR SDI. Additionally, best treatment minimizing negative environmental impacts was SDI, which reduced by 39.7% (P < 0.05), 43.0% 0.05) SI. We conclude that combined simultaneously mitigates GHG improves enhances C sequestration, making it suitable environment-friendly agricultural practice farming northern China.

Language: Английский

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A Review on Regulation of Irrigation Management on Wheat Physiology, Grain Yield, and Quality

Plants, Journal Year: 2023, Volume and Issue: 12(4), P. 692 - 692

Published: Feb. 4, 2023

Irrigation has been pivotal in sustaining wheat as a major food crop the world and is increasingly important an adaptation response to climate change. In context of agricultural production responding change, improved irrigation management plays significant role increasing water productivity (WP) maintaining sustainable development resources. Considering that cultivated arid semi-arid regions, which consumes high amounts water, developing with efficiency urgently required. Both scheduling methods intricately influence physiology, affect plant growth development, regulate grain yield quality. this frame, review aims provide critical analysis regulation mechanism on formation, key traits involved uptake utilization efficiency, we suggest series future perspectives could enhance wheat.

Language: Английский

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Performance of different corn hybrids and their corresponding water consumption analysis under various water management practices: Insights from experiments conducted under rain-shelters based on the TOPSIS method

European Journal of Agronomy, Journal Year: 2025, Volume and Issue: 168, P. 127587 - 127587

Published: March 25, 2025

Language: Английский

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Optimal irrigation for wheat-maize rotation depending on precipitation in the North China Plain: Evidence from a four-year experiment

Agricultural Water Management, Journal Year: 2024, Volume and Issue: 294, P. 108726 - 108726

Published: Feb. 16, 2024

The North China Plain (NCP) is a remarkable agricultural area with severe water scarcity and uneven precipitation, especially in wheat season. Optimizing irrigation strategies to increase productivity (WP) achieve higher yield winter wheat-summer maize rotation urgently needed has been persistent challenge. A four-year field experiment was conducted explore the impact of on WP subsequent under different precipitation year types (dry normal years, categorized based cumulative from sowing jointing stage (P1)). Four (W0, no irrigation; W1, pre-sowing W2, + W3, anthesis irrigation) were adopted for wheat, identical operations applied maize. Results showed that affected by P1 rather than total precipitation. Irrigation improved enhancing evapotranspiration, spike number, grain 1000-seed weight. water-limited gap between W2 W1 significantly those W0, W3 implying suitable strategy production. Different season had effect but increased 13.2–29.3% 16.1–41.8% compared other treatments through decreasing soil storage before dry years. Therefore, we recommended annual yield, WP, net income years (37.6 mm < 79.9 mm); lower consumption economic benefits (P1 37.6 mm), respectively. Overall, optimizing conditions an effective cope resource shortages crop NCP.

Language: Английский

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Sustainability analysis of irrigated and rainfed wheat production systems under varying levels of nitrogen fertilizer through coupling of emergy accounting and life cycle assessment

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 447, P. 141423 - 141423

Published: Feb. 23, 2024

Language: Английский

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Interactive effects of irrigation system and level on grain yield, crop water use, and greenhouse gas emissions of summer maize in North China Plain

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 864, P. 161165 - 161165

Published: Dec. 24, 2022

Language: Английский

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Subsurface drip irrigation mitigated greenhouse gas emission and improved root growth and yield in apple in semi-arid region

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 308, P. 109290 - 109290

Published: Jan. 8, 2025

Language: Английский

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