Effects of Split Application of Urea on Greenhouse Gas and Ammonia Emissions From a Rainfed Maize Field in Northeast China DOI Creative Commons

Dan Dong,

Weichao Yang,

Hao Sun

et al.

Frontiers in Environmental Science, Journal Year: 2022, Volume and Issue: 9

Published: Jan. 20, 2022

Split application of nitrogen (N) fertilizers during different crop growth stages to fulfill the N requirements reduces soil mineral concentrations and improves efficiency fertilizer use, can decrease nitrous oxide (N 2 O) emission from soil. However, inconsistent results regarding O emissions have been reported in rainfed areas. Furthermore, few long-term studies explained effects split on methane (CH 4 ) flux, thus limiting complete assessment total greenhouse gas (GHG) emissions. Therefore, monitoring is urgently required understand impacts GHG In this study, a 6-year field experiment was conducted maize (Z ea mays L.) Northeast China. The included three treatments: no representing control (CK), single at sowing stage (SU), jointing ratio 1: (SF). Between stages, were significantly higher SU than SF. high observed SF for 1 month after possibly because time coincided with optimum precipitation temperature conditions, which stimulated Overall, showed significant difference between During study period, did not affect cumulative CH flux. Compared CK, yield-scaled GWP treatment increased by 18.7% ( p < 0.05). Ammonia (NH 3 volatilization 272% that SU. findings indicated exhibited an environmental risk increasing NH field. Thus, suggested applied should be employed fields mitigate emissions, maintain efficient yields.

Language: Английский

Combination of organic fertilizer and slow-release fertilizer increases pineapple yields, agronomic efficiency and reduces greenhouse gas emissions under reduced fertilization conditions in tropical areas DOI
Zhenghao Liang, Xin Jin, Pengfei Zhai

et al.

Journal of Cleaner Production, Journal Year: 2022, Volume and Issue: 343, P. 131054 - 131054

Published: Feb. 22, 2022

Language: Английский

Citations

45
Higher N2O emissions from organic compared to synthetic N fertilisers on sandy soils in a cool temperate climate DOI Creative Commons
Søren O. Petersen, Leanne Peixoto, Helle Sørensen

et al.

Agriculture Ecosystems & Environment, Journal Year: 2023, Volume and Issue: 358, P. 108718 - 108718

Published: Aug. 28, 2023

The atmospheric increase in N2O is mainly derived from N fertilisation agriculture, and improved emission estimates are needed for effective mitigation. This study presents first of country-specific emissions synthetic liquid organic fertilisers Denmark. Representative crop rotations were established four locations across Denmark to provide a realistic context the estimation emissions, i.e., dairy farm rotation Western Denmark, pig Southwestern an arable Eastern sites light-textured typical Northern Europe, whereas rainfall varied considerably among years. A randomised block design was used, all crops represented triplicate each year with monitoring between April 2020 March 2022. Spring barley part rotations, here three (NS, NPK urea ammonium nitrate) eight (three cattle slurries, slurries two digestates) applied 1 m2 plots at either or order compare same fertiliser materials under contrasting site conditions. Identical methodologies management, application, measurement flux calculation, used ensure comparability. Manually operated chambers measurements. continuous indicated strong seasonal pattern main during spring. side-by-side comparison several sources years showed average factor spring period 0.15% (95% C.I. −0.17 0.37%, n = 16), (pig cattly 1.02% 0.75 – 1.30%, 44). higher fertilisers, which significant sites, opposition new factors recently proposed refinement IPCC methodology national inventories. conflicting results discussed reference region-specific conditions types, particular predominance soils low clay content, manure may explain deviations global estimates. annual difference 0.1 0.2% input (n 8), feasibility estimating based on growing season only discussed.

Language: Английский

Citations

19
Combined impact of reduced N fertilizer and green manure on wheat yield, nitrogen use efficiency and nitrous oxide (N2O) emissions reduction in Jharkhand, eastern India DOI
Raushan Kumar, Nirmali Bordoloi

Field Crops Research, Journal Year: 2024, Volume and Issue: 318, P. 109591 - 109591

Published: Sept. 24, 2024

Language: Английский

Citations

7
Response of N2O emissions to N fertilizer reduction combined with biochar application in a rain-fed winter wheat ecosystem DOI
Wei Li,

Huanxin Xie,

Zhangheng Ren

et al.

Agriculture Ecosystems & Environment, Journal Year: 2022, Volume and Issue: 333, P. 107968 - 107968

Published: April 5, 2022

Language: Английский

Citations

24
Innovative nitrogen management strategy reduced N2O emission while maintaining high pepper yield in subtropical condition DOI
Fen Zhang, Xiao Ma, Xiaopeng Gao

et al.

Agriculture Ecosystems & Environment, Journal Year: 2023, Volume and Issue: 354, P. 108565 - 108565

Published: May 8, 2023

Language: Английский

Citations

14
Reducing nitrogen fertilizer applications mitigates N2O emissions and maintains sugarcane yields in South China DOI

Zhuoting Li,

Qiangsheng Xu,

Yanni Lu

et al.

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 377, P. 109250 - 109250

Published: Aug. 22, 2024

Language: Английский

Citations

5
Interaction between soil and fertiliser nitrogen drives plant nitrogen uptake and nitrous oxide (N2O) emissions in tropical sugarcane systems DOI Creative Commons
Naoya Takeda, Johannes Friedl, Robert Kirkby

et al.

Plant and Soil, Journal Year: 2022, Volume and Issue: 477(1-2), P. 647 - 663

Published: May 4, 2022

Abstract Aims High nitrogen (N) fertiliser inputs in intensive sugarcane systems drive productivity but also significant emissions of nitrous oxide (N 2 O), a potent greenhouse gas. Fertiliser and soil N availability for both plant uptake O across different rates remain unknown, hindering efficient management. This study investigated the contribution their interaction to two intensively managed tropical systems. Methods temporal resolution measurements were combined with 15 recoveries four rates, (100, 150, 200 250 kg ha − 1 ) soil, emissions. Results Cumulative ranged from 0.3 4.1 , corresponding emission factors ranging 0.7 2.4%. Native accounted > 60% cumulative total uptake. addition increased native compared unfertilised control, highlighting between N, which determined overall magnitude response dependent on site conditions. Overall loss responded exponentially 50% applied permanently lost even at recommended rate. Conclusions The its demonstrate importance integrating fertility management rate recommendations maintain crop reduce environmental impacts.

Language: Английский

Citations

20
Appropriate N fertilizer addition mitigates N2O emissions from forage crop fields DOI
Jiao Ning, Shanning Lou,

Yarong Guo

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 829, P. 154628 - 154628

Published: March 16, 2022

Language: Английский

Citations

18
Nonlinear response of N2O and N2 emissions to increasing soil nitrate availability in a tropical sugarcane soil DOI Creative Commons
Robert Kirkby, Johannes Friedl, Naoya Takeda

et al.

Journal of Soils and Sediments, Journal Year: 2023, Volume and Issue: 23(5), P. 2065 - 2071

Published: March 9, 2023

Abstract Purpose The reduction of the greenhouse gas nitrous oxide (N 2 O) to dinitrogen ) via denitrification and N O source partitioning between nitrification remain major uncertainties in sugarcane systems. We therefore investigated magnitude product stoichiometry production pathways from a tropical soil response increasing nitrate (NO 3 − availability. Methods Microcosms were established using (Qld, Australia) emissions measured following fertilisation with 15 NO –N equivalent 25, 50 100 μg g −1 soil, simulating contents previously observed situ, mimicking flood irrigation by wetting close saturation. Results Cumulative increased exponentially availability, while cumulative followed an exponential increase maximum. Average daily exceeded 5 µg accounted for > 99% denitrification. suggests preferential even when levels had only diminishing effect on overall rate. fraction emitted was function water, heterotrophic respiration. Conclusions Our findings show driven excess , though complete dominated low O/(N + ratio questions use as proxy rates, highlighting need in-situ measurements account losses

Language: Английский

Citations

10
Revised emission factors for estimating direct nitrous oxide emissions from nitrogen inputs in Australia’s agricultural production systems: a meta-analysis DOI Creative Commons
Peter Grace, Daniele De Rosa,

Iurii Shcherbak

et al.

Soil Research, Journal Year: 2023, Volume and Issue: 62(1)

Published: Nov. 26, 2023

Context Agricultural soils are a major source of emissions the greenhouse gas nitrous oxide (N2O). Aim Quantify direct N2O from Australian agricultural production systems receiving nitrogen (N) inputs synthetic and organic fertilisers, crop residues, urine dung. Method A meta-analysis agriculture (2003–2021) identified 394 valid emission factors (EFs), including 102 EFs with enhanced efficiency fertilisers (EEFs). Key results The average EF all N sources (excluding EEFs) was 0.57%. Industry-based for fertiliser ranged 0.17% (non-irrigated pasture) to 1.77% (sugar cane), an Australia-wide 0.70%. Emission were independent topsoil carbon content, bulk density pH. revised non-irrigated cropping (grains) industry is now 0.41%; however, geographically-defined recommended. Urea most common 0.72% compared (0.20%), dung (0.06%) organo-mineral mixtures (0.26%). in rainfed environments increased by 0.16% every 100 mm over 300 mean annual rainfall. For each additional 50 kg ha−1 fertiliser, 0.13%, 0.31% 0.38% horticulture, irrigated high rainfall industries, respectively. use 3,4 dimethylpyrazole-phosphate (DMPP) produced significant reductions 55%, 80% 84% Conclusions implications Incorporation into 2020 National Greenhouse Accounts (NGA) 12% increase application fertilisers. lack country-specific residue decomposition data deficiency NGA.

Language: Английский

Citations

10