Effects of enhanced-efficiency nitrogen fertilizers on CH4 and CO2 emissions in a global perspective

Han, Yachun; Hou, Zhanhan; Guo, Ningxi; Yang, E.; D, Sun; Fang, Yunting

doi:10.1016/j.fcr.2022.108694

Cited by 15 publications

(7 citation statements)

References 54 publications

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“…Our findings suggest that, compared to CK, the N fertilization treatments significantly affected N 2 O emissions. The CRU significantly decreased the soil N 2 O emissions from lettuce fields compared to conventional N fertilization ( Figure 1 and Figure 3 ), which was in accordance with previous findings [ 10 , 14 , 37 ]. The soil NH 4 + -N and NO 3 − -N levels were significantly lower under CRU than ON, possibly because conventional urea dissolved rapidly in the soil solution upon entering the soil.…”

Section: Discussionsupporting

confidence: 92%

“…CRU can better match fertilizer nutrient release with crop uptake without additional topdressing [ 10 , 12 , 13 ]. Previous meta-analyses indicated that CRU could be applied once as basal fertilizer with no effect on grain yields while reducing reactive N losses by 49% worldwide [ 14 ], thus decreasing the use of N fertilizer and promoting time- and labor-saving crop production [ 15 , 16 ]. The advantageous effects of CRU on grain yield and NUE depend largely on the synchronization of the N release rate with the N requirements of crops [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

Wang,

Cao,

Zhou

et al. 2024

Plants

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Controlled-release urea (CRU) fertilizers are widely used in agricultural production to reduce conventional nitrogen (N) fertilization-induced agricultural greenhouse gas emissions (GHGs) and improve N use efficiency (NUE). However, the long-term effects of different CRU fertilizers on GHGs and crop yields in vegetable fields remain relatively unexplored. This study investigated the variations in GHG emissions at four growth stages of lettuce in the spring and autumn seasons based on a five-year field experiment in the North China Plain. Four treatments were setup: CK (without N application), U (conventional urea—N application), ON (20% reduction in urea—N application), CRU (20% reduction in polyurethane-coated urea without topdressing), and DCRU (20% reduction in polyurethane-coated urea containing dicyandiamide [DCD] without topdressing). The results show that N application treatments significantly increased the GHG emissions and the lettuce yield and net yield, and DCRU exhibited the lowest N2O and CO2 emissions, the highest lettuce yield and net yield, and the highest lettuce N content of the N application treatments. When compared to U, the N2O emission peak under CRU and DCRU treatments was notably decreased and delayed, and their average N2O emission fluxes were significantly reduced by 10.20–20.72% and 17.51–29.35%, respectively, leading to a significant reduction in mean cumulative N2O emissions during the 2017–2021 period. When compared to U, the CO2 fluxes of DCRU significantly decreased by 8.0–16.54% in the seedling period, and mean cumulative CO2 emission decreased by 9.28%. Moreover, compared to U, the global warming potential (GWP) and greenhouse gas intensity (GHGI) of the DCRU treatment was significantly alleviated by 9.02–17.13% and 16.68–20.36%, respectively. Compared to U, the N content of lettuce under DCRU was significantly increased by 6.48–17.25%, and the lettuce net yield was also significantly increased by 5.41–7.71%. These observations indicated that the simple and efficient N management strategy to strike a balance between enhancing lettuce yields and reduce GHG emissions in open-field lettuce fields could be obtained by applying controlled-release urea containing DCD without topdressing.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

Wang,

Cao,

Zhou

et al. 2024

Plants

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“…Our reliance on chemical nitrogen fertilizers for food production will continuously increase as the world population increases to approximately 9.5 billion by 2050. , However, owing to low nitrogen use efficiency (NUE, 30–50%), large amounts of reactive nitrogen are lost to the environment, causing unintended consequences. − Coated controlled-release urea (CRU) has been widely considered as an effective, viable measure to improve NUE and alleviate nitrogen-related environmental impacts. − CRU, which is generally prepared by coating urea granules with waterproof materials, releases nitrogen into the soil at rates closely synchronized with crop nitrogen requirements. − A previous meta-analysis indicated that CRU application can reduce reactive nitrogen losses by 24.3–45.9% while increasing crop yield by 7.7% worldwide . Moreover, CRU can decrease CH 4 and CO 2 emissions by 34.2 and 8.4%, respectively . However, the CRU manufacturing process is complicated and often involves the use of toxic solvents. , In addition, CRU coating materials are commonly derived from high-cost and nonrenewable petrochemical products. − Petroleum-based membranes are nonbiodegradable and accumulate in soil after long-term application, leading to potential pollution risks. , These disadvantages greatly restrict the large-scale adoption of CRU in agriculture. , Therefore, developing sustainable materials with excellent controlled-release and biodegradation properties for petroleum-based polymer membrane replacement is highly desirable yet challenging.…”

Section: Introductionmentioning

confidence: 99%

“…12 Moreover, CRU can decrease CH 4 and CO 2 emissions by 34.2 and 8.4%, respectively. 13 However, the CRU manufacturing process is complicated and often involves the use of toxic solvents. 14,15 In addition, CRU coating materials are commonly derived from high-cost and nonrenewable petrochemical products.…”

Section: Introductionmentioning

confidence: 99%

All-Natural Plant-Derived Polyurethane as a Substitute of a Petroleum-Based Polymer Coating Material

Yang,

Zhang,

Sun

et al. 2024

J. Agric. Food Chem.

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The development of efficient, biobased polyurethane controlled-release fertilizers from sustainable and eco-friendly biomaterials has received increased research attention, owing to concerns regarding global food security and environmental sustainability. Most previous studies focused on replacing petroleum-based polyols with biopolyols; however, the other main raw material, isocyanate, remained a petrochemical product. Herein, all-natural, plant-derived polyurethane-coated urea was successfully developed using castor oil and biobased isocyanate, and the performance of the coating shell before and after modification was compared. The results showed that the incorporation of a low dose of lauric acid copper into the coating material simultaneously enhanced the hydrophobicity and elasticity of the all-biobased polyurethane membrane, which prolonged the nitrogen release longevity from 3 to 112 days. In addition, the modified membrane showed excellent biodegradability in a soil environment. The novel all-biobased polyurethane coating material and modification technique provide insight for developing sustainable and ecofriendly controlled-release fertilizers.

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“…"This can be attributed to a harmonized input of inorganic N fertilizers, the implementation of nitrification inhibitors, and the adoption of integrated fertilizer management strategies. Conversely, the concentration of atmospheric CH4 has exhibited a dramatic and concerning increase" [8,9]. "For instance, in the early 2000s, CH4 levels were rising at a rate of approximately 0.5 ppb (parts per billion) per year.…”

Section: Introductionmentioning

confidence: 99%

Conservation Agriculture as a Climate Change Mitigation Strategy: A Review

Mandloi,

Bangre,

Aher

et al. 2023

IJECC

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To enhance our comprehension of agriculture's role in addressing climate change, accurate assessment of its capacity for carbon sequestration is crucial. This assessment encompasses multiple considerations, including regional climate patterns, crop choices, soil management practices, and soil types. Climate change poses a significant threat to food and nutritional security on local, national, and global scales. The amplified concentrations of greenhouse gases, such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), present immediate challenges. Vulnerable populations, especially those in impoverished conditions, face heightened risk of food insecurity due to the impacts of climate change. Additionally, the conversion of non-agricultural land, like forests, into agricultural use, and human-generated emissions of greenhouse gases from agricultural activities significantly contribute to climate change. The escalating concentration of greenhouse gases, particularly CO2, in the atmosphere leads to global warming. Over the last century (1906–2005), the global mean surface temperature has risen by approximately 0.60 to 0.90°C, with the most rapid increase occurring in recent decades. The global average temperature continues to steadily climb and is projected to rise by 2°C by 2100, potentially resulting in significant global economic losses. The increasing concentration of CO2, a major greenhouse gas, is a cause for concern. This rise has fostered enhanced plant growth and productivity due to increased photosynthesis. However, the benefits of heightened photosynthesis are offset by higher temperatures, leading to increased crop respiration rates, greater evapotranspiration, heightened pest infestations, shifts in weed species, and reduced crop durations. This paper reviews the literature on climate change, its potential drivers, its effects on agriculture, and its influence on the physiological and metabolic processes of plants. It also explores potential and reported implications for plant growth, productivity, and mitigation strategies. In recent years, there has been a growing recommendation for the adoption of conservation agriculture as a more sustainable alternative to conventional farming practices. Conservation agriculture not only supports soil health but also enhances agricultural productivity, making it a crucial tool for mitigating the impacts of climate change.

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Effects of enhanced-efficiency nitrogen fertilizers on CH4 and CO2 emissions in a global perspective

Cited by 15 publications

References 54 publications

Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

All-Natural Plant-Derived Polyurethane as a Substitute of a Petroleum-Based Polymer Coating Material

Conservation Agriculture as a Climate Change Mitigation Strategy: A Review

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