Emission estimation of nitrous oxide (N2O) from a wheat cropping system under varying tillage practices and different levels of nitrogen fertiliser

Soil Research ◽  
2016 ◽  
Vol 54 (6) ◽  
pp. 767 ◽  
Author(s):  
Nirmali Bordoloi ◽  
K. K. Baruah ◽  
P. Bhattacharyya
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Use Efficiency ◽  
Wheat Variety ◽  
N2o Emissions ◽  
Nitrogen Use ◽  
Nitrogen Fertiliser ◽  
Tillage Practices ◽  
Significant Difference ◽  
Use Efficiency ◽  
Different Levels

Nitrous oxide is a greenhouse gas with high global warming potential emitted from agricultural sources. The effects of tillage practices and different levels of N fertiliser on seasonal fluxes of N2O were investigated in a field planted with the wheat variety Sonalika. The experiment was conducted during 2012–13 and 2013–14 under conventional tillage (CT) and reduced tillage (RT) farming systems in combination with four different levels of nitrogen fertiliser (i.e. zero nitrogen (F1), 60kgNha–1 (F2), 80kgNha–1 (F3) and 100kgNha–1 (F4)). Both tillage practices and fertiliser significantly (P<0.01) affected seasonal cumulative N2O emissions and wheat yield. However, there was no significant difference in N2O emissions between RTF1 and CTF1 (zero nitrogen). Compared with RT, N2O emission decreased under the CT practice by 2.49%, 10.11%, 7.9% and 27.46% in CTF1, CTF2, CTF3 and CTF4 respectively. Highest and lowest seasonal cumulative fluxes were recorded in RTF4 (N 100kgha–1) and CTF1 (N 0kgha–1) respectively. During the wheat-growing period, nitrogen use efficiency decreased with increasing nitrogen levels and treatment with 60 kg-Nha–1 in the CT practice (CTF2) was found to be effective in increasing nitrogen use efficiency and decreasing yield-scaled N2O emissions.

scholarly journals Nitrogen use efficiency and N<sub>2</sub>O and NH<sub>3</sub> losses attributed to three fertiliser types applied to an intensively managed silage crop

2019 ◽  
Vol 16 (23) ◽  
pp. 4731-4745 ◽  
Author(s):  
Nicholas Cowan ◽  
Peter Levy ◽  
Andrea Moring ◽  
Ivan Simmons ◽  
Colin Bache ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Ammonium Nitrate ◽  
Nitrogen Use Efficiency ◽  
Passive Samplers ◽  
N2o Emissions ◽  
Urease Inhibitor ◽  
Nitrogen Use ◽  
Spatial And Seasonal Variation ◽  
Use Efficiency ◽  
Intensively Managed

Abstract. Three different nitrogen (N) fertiliser types, ammonium nitrate, urea and urea coated with a urease inhibitor (Agrotain®), were applied at standard rates (70 kg N ha−1) to experimental plots in a typical and intensively managed grassland area at the Easter Bush Farm Estate (Scotland). The nitrogen use efficiency of the fertilisers was investigated as well as nitrogen losses in the form of nitrous oxide fluxes (N2O) and ammonia (NH3) during fertilisation events in the 2016 and 2017 growing seasons. Nitrous oxide was measured by the standard static chamber technique and analysed using Bayesian statistics. Ammonia was measured using passive samplers combined with the Flux Interpretation by Dispersion and Exchange over Short Range (FIDES) inverse dispersion model. On average, fertilisation with ammonium nitrate supported the largest yields and had the highest nitrogen use efficiency, but as large spatial and seasonal variation persisted across the plots, yield differences between the three fertiliser types and zero N control were not consistent. Overall, ammonium nitrate treatment was found to increase yields significantly (p value < 0.05) when compared to the urea fertilisers used in this study. Ammonium nitrate was the largest emitter of N2O (0.76 % of applied N), and the urea was the largest emitter of NH3 (16.5 % of applied N). Urea coated with a urease inhibitor did not significantly increase yields when compared to uncoated urea; however, ammonia emissions were only 10 % of the magnitude measured for the uncoated urea, and N2O emissions were only 47 % of the magnitude of those measured for ammonium nitrate fertiliser. This study suggests that urea coated with a urease inhibitor is environmentally the best choice in regards to nitrogen pollution, but because of its larger cost and lack of agronomic benefits, it is not economically attractive when compared to ammonium nitrate.

scholarly journals Rapeseed: how to value varieties with higher nitrogen use efficiency in France

OCL ◽  
2019 ◽  
Vol 26 ◽  
pp. 26 ◽  
Author(s):  
Edwige Charbonnier ◽  
Aline Fugeray-Scarbel ◽  
Stéphane Lemarié
Keyword(s):  
Nitrogen Use Efficiency ◽  
Value Chain ◽  
Rapeseed Oil ◽  
Biodiesel Production ◽  
Greenhouse Gas Balance ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Different Levels ◽  
Gas Balance ◽  
Detailed Presentation

This article focuses on the interest in improving the nitrogen use efficiency of rapeseed varieties in France. We show that this trait is of interest at different levels of the value chain and for different markets. Nitrogen use efficiency improves farmers’ margins by reducing fertilizing costs or increasing yields. Nitrogen use efficiency also improves the GHG (greenhouse gas) balance of rapeseed used for biodiesel production and the image of edible rapeseed oil for consumers within the framework of specific labels. Finally, nitrogen use efficiency can also be seen as a trait that improves the protein content of rapeseed oilcake and, therefore, increases its value compared to competing sources of protein. After a detailed presentation of these different valuations, we provide current or possible measures that have been or could be implemented to encourage different actors in the sector to develop and diffuse this trait.

Nitrous oxide emissions and nitrogen use efficiency of manure and digestates applied to spring barley

2017 ◽  
Vol 239 ◽  
pp. 188-198 ◽  
Author(s):  
Khagendra R. Baral ◽  
Rodrigo Labouriau ◽  
Jørgen E. Olesen ◽  
Søren O. Petersen
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Use Efficiency ◽  
Spring Barley ◽  
Nitrous Oxide Emissions ◽  
Nitrogen Use ◽  
Use Efficiency

Nitrous oxide and nitric oxide emissions and nitrogen use efficiency as affected by nitrogen placement in lowland rice fields

2017 ◽  
Vol 110 (2) ◽  
pp. 277-291 ◽  
Author(s):  
Yam Kanta Gaihre ◽  
Upendra Singh ◽  
S. M. Mofijul Islam ◽  
Azmul Huda ◽  
M. R. Islam ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Nitrogen Use Efficiency ◽  
Rice Fields ◽  
Lowland Rice ◽  
Nitrogen Use ◽  
Nitric Oxide Emissions ◽  
Use Efficiency

scholarly journals Nitrogen-Use Efficiency, Nitrous Oxide Emissions, and Cereal Production in Brazil: Current Trends and Forecasts

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0135234 ◽  
Author(s):  
Marcel Viana Pires ◽  
Dênis Antônio da Cunha ◽  
Sabrina de Matos Carlos ◽  
Marcos Heil Costa
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Use Efficiency ◽  
Nitrous Oxide Emissions ◽  
Nitrogen Use ◽  
Current Trends ◽  
Brazil Current ◽  
Cereal Production ◽  
Use Efficiency

scholarly journals Effect of straw incorporation and nitrification inhibitor on nitrous oxide emission in various cropland soils and its microbial mechanism

2021 ◽  
Author(s):  
Yabo Zhang ◽  
Feng Liu ◽  
Juntao Wang ◽  
Hangwei Hu ◽  
Jizheng He ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Balance ◽  
Nitrification Inhibitor ◽  
N2o Emission ◽  
Soil Types ◽  
Nitrogen Use ◽  
Nosz Gene ◽  
Use Efficiency ◽  
Straw Incorporation

Nitrification inhibitor and straw incorporation are widely used to improve crop nitrogen use efficiency in agricultural soil, but their effects on nitrous oxide (N2O) emission across different soil types and the microbial mechanisms remain less understood. In this study, we used controlled experiment and DNA-based molecular analysis to study how nitrification inhibitor (dicyandiamide, DCD) and straw incorporation affect soil nitrogen balance, N2O emission and microbial nitrifiers/denitrifers in three distinct agricultural soils (the black, fluvo-aquic and red soils) across China. Both DCD and straw incorporation improved nitrogen balance by increasing NH4+ and decreasing NO3- in all soils. DCD tended to decrease N2O emission from all soils especially the Fluvo-aquic one, while straw incorporation reduced N2O emission only in the fluvo-aquic soil but increased N2O emission in the other two especially the red soil (by ~600%). T-RFLP analysis revealed that the denitriers community structure are distinct among the three soils, but was not strongly affected by DCD or straw incorporation. qPCR analysis revealed that DCD or straw incorporation had no significant effect on nitrifier abundance, but increased nitrous oxide reductase nosZ gene abundance in the black/fluvo-aquic soil rather than the red soil. Structural equational modelling further confirmed that, when accounting for treatments and soil properties, nosZ gene abundance is the only biological factor significantly determined N2O emission in different soil types. Taken together, our work advanced the knowledge on the agricultural practices and N2O emission in cropland soils, and suggested that straw incorporation may not be a good choice for the red and black soil areas; management practices should be used as per soil type to balance between nitrogen use efficiency and N2O emission.

scholarly journals Assessing Wheat Response to N Fertilization in a Wheat–Maize–Soybean Long-Term Rotation through NUE Measurements

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 941
Author(s):  
Roxana Vidican ◽  
Anamaria Mălinaș ◽  
Ioan Rotar ◽  
Rozalia Kadar ◽  
Valeria Deac ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilization ◽  
Agricultural Research ◽  
N Uptake ◽  
Wheat Variety ◽  
N Fertilization ◽  
Wheat Crop ◽  
Nitrogen Use ◽  
Use Efficiency

Nitrogen fertilization is indispensable in increasing wheat crop productivity but, in order to achieve maximum profitable production and minimum negative environmental impact, improving nitrogen use efficiency (NUE) should be considered. The aim of this study was to evaluate the nitrogen use efficiency (NUE) in a long-term wheat–maize–soybean rotation system with the final purpose of increasing the overall performance of the wheat cropping system. Research was undertaken at the Agricultural Research Development Station Turda (ARDS Turda), located in Western Transylvania Plain, Romania. The experimental field was carried out at a fixed place during seven wheat vegetation seasons. The plant material consisted of a wheat variety created by the ARDS Turda (Andrada), one variety of maize (Turda 332) and one variety of soybean (Felix). The experiment covered two planting patterns: wheat after maize and wheat after soybean and five levels of nitrogen fertilization (control-unfertilized, fertilization with 0—control plot, 30, 60, 90 and 120 kg N ha−1 y−1). The following indices were assessed: NUE (nitrogen use efficiency), N uptake and PFP (partial factor productivity). The results of the present study suggest that reduced N-fertilization doses could improve N uptake and utilization for both planting patterns.

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