Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system
The paper consolidates the role of conventional and stabilized N fertilizers used in coffee crop production in Brazil and their N2O emissions in tropical systems. The experiment consisted of the combination of three fertilizers and five doses with four repetitions, totalling 60 experimental plots. T...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Atmospheric Environment: X |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590162123000242 |
| _version_ | 1797394821842731008 |
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| author | Leonardo Fernandes Sarkis Mateus Portes Dutra Camila Almeida dos Santos Bruno José Rodrigues Alves Segundo Urquiaga Douglas Guelfi |
| author_facet | Leonardo Fernandes Sarkis Mateus Portes Dutra Camila Almeida dos Santos Bruno José Rodrigues Alves Segundo Urquiaga Douglas Guelfi |
| author_sort | Leonardo Fernandes Sarkis |
| collection | DOAJ |
| description | The paper consolidates the role of conventional and stabilized N fertilizers used in coffee crop production in Brazil and their N2O emissions in tropical systems. The experiment consisted of the combination of three fertilizers and five doses with four repetitions, totalling 60 experimental plots. The factors of the experiment were conventional urea (U), ammonium nitrate (AN), and urea + NBPT (UNBPT), while the doses were 0, 150, 275, 400, and 525 kg ha−1 year−1 of N. The municipality is located in a region at 1100 m of altitude, 20°53′26.04″ S and 44°52′04.14″ W. A randomized block design with a 3 × 5 factorial scheme was used. This region, traditional in coffee production, has a tropical humid climate, classified as Cwa according to the Köppen scale, with temperate summer and dry winter. UNBPT and the ammonium nitrate mitigated the N2O emissions by 50.6% and 78.5%, respectively, in comparison to the conventional urea. High C stocks were found in the 1 m soil layer, from 117 to 162 t ha−1 of organic C, indicating the importance of the soil as a C sink in coffee plantations. N stocks varied from 33 to 17 t ha−1 of N but no differences among the treatments were found. Approximately 50% of soil C was in the 0–0.4 m layer as a consequence of the greater amount of plant biomass, nutrients, and biological activity. Soil C:N ratio in the entire layer varied from 4.2 to 9.2. Our results indicate that nitrification is the most predominant process of N2O emissions. The standard EF proposed by the IPCC overestimates the N2O emissions in the Brazilian coffee plantations and the emissions differ according to the N fertilizer technology. These coffee crop systems have an important ability to stock C and N in the soil. |
| first_indexed | 2024-03-09T00:25:17Z |
| format | Article |
| id | doaj.art-6bf257951232463bbbafa7f11e88131f |
| institution | Directory Open Access Journal |
| issn | 2590-1621 |
| language | English |
| last_indexed | 2024-03-09T00:25:17Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Atmospheric Environment: X |
| spelling | doaj.art-6bf257951232463bbbafa7f11e88131f2023-12-12T04:35:47ZengElsevierAtmospheric Environment: X2590-16212023-12-0120100224Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop systemLeonardo Fernandes Sarkis0Mateus Portes Dutra1Camila Almeida dos Santos2Bruno José Rodrigues Alves3Segundo Urquiaga4Douglas Guelfi5Department of Soil Science, Federal University of Lavras, Lavras, MG, BrazilDepartment of Soil Science, Federal University of Lavras, Lavras, MG, BrazilNutrient Cycling Center, Embrapa Agrobiology, Rio de Janeiro, BrazilNutrient Cycling Center, Embrapa Agrobiology, Rio de Janeiro, BrazilNutrient Cycling Center, Embrapa Agrobiology, Rio de Janeiro, BrazilDepartment of Soil Science, Federal University of Lavras, Lavras, MG, Brazil; Corresponding author. Department of Soil Science – Laboratory of Fertilizer and Soil Amendment Sector, Federal University of Lavras, Lavras, MG, Brazil.The paper consolidates the role of conventional and stabilized N fertilizers used in coffee crop production in Brazil and their N2O emissions in tropical systems. The experiment consisted of the combination of three fertilizers and five doses with four repetitions, totalling 60 experimental plots. The factors of the experiment were conventional urea (U), ammonium nitrate (AN), and urea + NBPT (UNBPT), while the doses were 0, 150, 275, 400, and 525 kg ha−1 year−1 of N. The municipality is located in a region at 1100 m of altitude, 20°53′26.04″ S and 44°52′04.14″ W. A randomized block design with a 3 × 5 factorial scheme was used. This region, traditional in coffee production, has a tropical humid climate, classified as Cwa according to the Köppen scale, with temperate summer and dry winter. UNBPT and the ammonium nitrate mitigated the N2O emissions by 50.6% and 78.5%, respectively, in comparison to the conventional urea. High C stocks were found in the 1 m soil layer, from 117 to 162 t ha−1 of organic C, indicating the importance of the soil as a C sink in coffee plantations. N stocks varied from 33 to 17 t ha−1 of N but no differences among the treatments were found. Approximately 50% of soil C was in the 0–0.4 m layer as a consequence of the greater amount of plant biomass, nutrients, and biological activity. Soil C:N ratio in the entire layer varied from 4.2 to 9.2. Our results indicate that nitrification is the most predominant process of N2O emissions. The standard EF proposed by the IPCC overestimates the N2O emissions in the Brazilian coffee plantations and the emissions differ according to the N fertilizer technology. These coffee crop systems have an important ability to stock C and N in the soil.http://www.sciencedirect.com/science/article/pii/S2590162123000242Greenhouse gasesNitrogen fertilizersUrease inhibitorsCoffea arabica |
| spellingShingle | Leonardo Fernandes Sarkis Mateus Portes Dutra Camila Almeida dos Santos Bruno José Rodrigues Alves Segundo Urquiaga Douglas Guelfi Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system Atmospheric Environment: X Greenhouse gases Nitrogen fertilizers Urease inhibitors Coffea arabica |
| title | Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system |
| title_full | Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system |
| title_fullStr | Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system |
| title_full_unstemmed | Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system |
| title_short | Nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system |
| title_sort | nitrogen fertilizers technologies as a smart strategy to mitigate nitrous oxide emissions and preserve carbon and nitrogen soil stocks in a coffee crop system |
| topic | Greenhouse gases Nitrogen fertilizers Urease inhibitors Coffea arabica |
| url | http://www.sciencedirect.com/science/article/pii/S2590162123000242 |
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