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

Denitrification Losses in Response to N Fertilizer Rates—Integrating High Temporal Resolution N2O, In Situ 15N2O and 15N2 Measurements and Fertilizer 15N Recoveries in Intensive Sugarcane Systems DOI Creative Commons
Naoya Takeda, Johannes Friedl, Robert Kirkby

et al.

Journal of Geophysical Research Biogeosciences, Journal Year: 2023, Volume and Issue: 128(9)

Published: Aug. 28, 2023

Abstract Denitrification is a key process in the global nitrogen (N) cycle, causing both nitrous oxide (N 2 O) and dinitrogen ) emissions. However, estimates of seasonal denitrification losses O + N are scarce, reflecting methodological difficulties measuring soil‐borne emissions against high atmospheric background challenges regarding their spatio‐temporal upscaling. This study investigated response to fertilizer rates (0, 100, 150, 200, 250 kg ha −1 on two intensively managed tropical sugarcane farms Australia, by combining automated monitoring, situ measurements using 15 gas flux method recoveries at harvest. Dynamic changes O/(N ratio (<0.01 0.768) were explained fitting generalized additive mixed models (GAMMs) with soil factors upscale temporal‐resolution data daily over season. Cumulative ranged from 12 87 , increasing non‐linearly rates. Emissions accounted for 31%–78% dominated environmentally benign The contribution loss decreased rates, suggesting significance other pathways including leaching runoff higher delivers blueprint approach extrapolate temporal spatial scales, which can be applied fertilized agroecosystems. Robust determined this will help improve cropping system modeling approaches, advancing our understanding cycle across scales.

Language: Английский

Citations

4
Assessment of direct nitrous oxide emissions and emission factors from sugarcane plantations using different rates of chemical fertilizer application in western Thailand DOI
Patikorn Sriphirom,

Benjamas Rossopa,

Nimaradee Boonapatcharoen

et al.

Clean Technologies and Environmental Policy, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Language: Английский

Citations

1
Integrated management to achieve synergy in sugarcane production and quality in China DOI

Haofu Liu,

Yingcheng Wang,

Tingyao Cai

et al.

Field Crops Research, Journal Year: 2024, Volume and Issue: 317, P. 109552 - 109552

Published: Aug. 28, 2024

Language: Английский

Citations

1
Bioavailable Cu can influence nitrification rate in New Zealand dairy farm soils DOI
Dumsane Themba Matse, Paramsothy Jeyakumar, Peter Bishop

et al.

Journal of Soils and Sediments, Journal Year: 2021, Volume and Issue: 22(3), P. 916 - 930

Published: Nov. 29, 2021

Language: Английский

Citations

8
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 &lt; 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

Citations

6