Assessment of reactive nitrogen mitigation potential of different nitrogen treatments under direct-seeded rice and wheat cropping system

Jiang, Jingyan; Fan, Hongbo; Pang, Bing-Kun; Zhang, Jingsha; Li, Zhilin; Jiang, Shanshan; Wu, Jie

doi:10.1007/s11356-018-2104-1

Cited by 6 publications

(6 citation statements)

References 50 publications

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“…Soil nutrient loss is a universal phenomenon worldwide [1], and how to control and prevent nutrient loss is also a focal point of international research [2,3]. As one of the largest concentrated karst areas globally [4], the karst area in Southwest China [5] has a low surface soil thickness and high rock exposure rates due to rocky desertification with severe soil erosion on sloping farmland.…”

Section: Introductionmentioning

confidence: 99%

Effects of rainfall intensity on runoff and nutrient loss of gently sloping farmland in a karst area of SW China

et al. 2021

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Nutrient losses from sloping farmland in karst areas lead to the decline in land productivity and nonpoint source pollution. A specially tailored steel channel with an adjustable slope and underground hole fissures was used to simulate the microenvironment of the "dual structure" of the surface and underground of sloping farmland in a karst area. The artificial rainfall simulation method was used to explore the surface and underground runoff characteristics and nutrient losses from sloping farmland under different rainfall intensities. The effect of rainfall intensity on the nutrient loss of farmland on karst sloping land was clarified. The results showed that the surface was the main route of runoff and nutrient loss during the rainy season on sloping farmland in karst areas. The influence of rainfall intensity on the nutrients in surface runoff was more substantial than that on underground runoff nutrients. Nutrient loss was more likely to occur underground than on the surface. The losses of total nitrogen, total phosphorus, and total potassium in surface and underground runoff initially increased and then gradually stabilized with the extension of rainfall duration and increased with increasing rainfall intensity and the amount of nutrient runoff. The output of nutrients through surface runoff accounted for a high proportion of the total, and underground runoff was responsible for a low proportion. Although the amount of nutrients output by underground runoff was small, it could directly cause groundwater pollution. The research results provide a theoretical reference for controlling land source pollution from sloping farming in karst areas.

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Section: Introductionmentioning

confidence: 99%

Effects of rainfall intensity on runoff and nutrient loss of gently sloping farmland in a karst area of SW China

et al. 2021

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“…The methylene urea chains formed in the Urea-Formaldehyde production depend on the activity of microorganisms in a process similar to N mineralization in the soil. Such a process prevents all the N from being readily released into the soil and is thus subject to the transformations needed to produce NH 3 [ 51 , 52 , 53 , 54 , 55 ]. From an agronomic perspective, the lower N-NH 3 losses are due to the reduction of excessive mineral N in the soil solution, which is susceptible to N-losses.…”

Section: Discussionmentioning

confidence: 99%

Technologies for Fertilizers and Management Strategies of N-Fertilization in Coffee Cropping Systems to Reduce Ammonia Losses by Volatilization

Freitas

Bartelega

Santos

et al. 2022

Plants

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The aim of this study was to quantify NH3-N losses from conventional, stabilized, slow-release, and controlled-release N fertilizers in a coffee field. The N fertilizers analyzed were prilled urea, prilled urea dissolved in water, ammonium sulfate (AS), ammonium nitrate (AN), urea + Cu + B, urea + adhesive + CaCO3, and urea + NBPT (all with three split applications), as well as blended N fertilizer, urea + elastic resin, urea-formaldehyde, and urea + polyurethane (all applied only once). NH3-N losses (mean of two crop seasons) were statistically higher for urea + adhesive + CaCO3 (27.9% of applied N) in comparison with the other treatments. Loss from prilled urea (23.7%) was less than from urea + adhesive + CaCO3. Losses from urea + NBPT (14.5%) and urea + Cu + B (13.5%) were similar and lower than those from prilled urea. Urea dissolved in water (4.2%) had even lower losses than those treatments, and the lowest losses were observed for AS (0.6%) and AN (0.5%). For the single application fertilizers, higher losses occurred for urea + elastic resin (5.8%), blended N fertilizer (5.5%), and urea + polyurethane (5.2%); and urea-formaldehyde had a lower loss (0.5%). Except for urea + adhesive + CaCO3, all N-fertilizer technologies reduced NH3-N losses compared to prilled urea.

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“…Previously, Nr losses from agricultural production were mainly evaluated based on emission factors and field experiments (Schroeck et al 2019). For example, as indicated by the field experiments from Jiang et al (2018), Nr losses in crop planting varied with fertilizer applications (e.g. conventional fertilizer, urea-ammonium mixed nitrogen fertilizer, stabilized urea, and organic fertilizer).…”

Section: Life Cycle Inventory Of Nr Lossesmentioning

confidence: 99%

“…Compared with the Nr losses from crop fields (i.e. 36.94-41.20 and 32.41-38.11 kg N ha −1 in wheat and rice fields, respectively) under urea-ammonium mixed nitrogen fertilizer application from Jiang et al (2018), (a) Nr losses from wheat field in 2018 were 17.92%-68.79% lower in most provinces; and (b) Nr losses from rice field in 2018 were 1.38%-77.20% lower in most provinces.…”

Section: Life Cycle Inventory Of Nr Lossesmentioning

confidence: 99%

Gaseous reactive nitrogen losses of agricultural systems in China influenced by crop trade

Yue

et al. 2022

Environ. Res. Lett.

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China plays an important role in the international trade of agricultural commodities. Considering the dynamic reactive nitrogen (Nr) losses of agricultural systems in China, a hypothesis was proposed that crop conversion in China would be correlated with the extent of crop trade, influencing Nr losses in agricultural systems. The objective of this study was to verify the hypothesis based on a hybrid approach, which incorporated life cycle analysis (LCA), copula-Markov Chain Monte Carlo (MCMC) simulation, and copula sampling. The approach was proven to be of benefit in (a) evaluating Nr losses in crop planting based on a LCA framework, (b) identifying dependencies and co-movements of the correlated variables in planting structures and crop trade using copula-MCMC simulations, and (c) recognizing fluctuations in Nr losses of crop planting in the future using copula-based sampling method. The planting structures and international trade of four types of crops (i.e., wheat, soybeans, maize, and rice) in twenty provinces of China indicated significant correlations, thus supporting the initial hypothesis. With the improvement of self-sufficiency in crop production, especially soybeans, Nr losses from the crop production of China in 2025 and 2030 would decrease by 8.43% and 4.26%, compared with those in 2018 (i.e., 1916.74 kt N).

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Assessment of reactive nitrogen mitigation potential of different nitrogen treatments under direct-seeded rice and wheat cropping system

Cited by 6 publications

References 50 publications

Effects of rainfall intensity on runoff and nutrient loss of gently sloping farmland in a karst area of SW China

Effects of rainfall intensity on runoff and nutrient loss of gently sloping farmland in a karst area of SW China

Technologies for Fertilizers and Management Strategies of N-Fertilization in Coffee Cropping Systems to Reduce Ammonia Losses by Volatilization

Gaseous reactive nitrogen losses of agricultural systems in China influenced by crop trade

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