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Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

Otto, R. ; Castro, S. A. Q. ; Mariano, E. ; Castro, S. G. Q. ; Franco, H. C. J. ; Trivelin, P. C. O.

Bioenergy research, 2016-12, Vol.9 (4), p.1272-1289 [Periódico revisado por pares]

New York: Springer US

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Título:
Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?
Autor: Otto, R. ; Castro, S. A. Q. ; Mariano, E. ; Castro, S. G. Q. ; Franco, H. C. J. ; Trivelin, P. C. O.
Assuntos: Agricultural production ; Alternative energy sources ; Biodiesel fuels ; Biofuels ; Biomass ; Biomass energy ; Biomedical and Life Sciences ; By products ; Consumption ; Efficiency ; Emission standards ; Emissions ; Energy minerals ; Environmental impact ; Ethanol ; Fertilizers ; Fossil fuels ; Fuels ; Laboratories ; Land area ; Life Sciences ; Mineralization ; Nitrogen ; Nitrous oxides ; Nuclear energy ; Plant Breeding/Biotechnology ; Plant Ecology ; Plant Genetics and Genomics ; Plant Sciences ; Production management ; Raw materials ; Renewable energy ; Saccharum ; Soil sciences ; Studies ; Sugar cane ; Sugar industry ; Sugarcane ; Sustainability ; Sustainable development ; Wood Science & Technology
É parte de: Bioenergy research, 2016-12, Vol.9 (4), p.1272-1289
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Land area devoted to sugarcane ( Saccharum spp.) production in Brazil has increased from 2 million to 10 million ha over the past four decades. Studies have shown that, from an environmental perspective, the transformation of nitrogen (N) fertilizers into N 2 O gases can offset the advantages gained by replacing fossil fuels with biofuels. Our objectives here were to review recent developments in N management for sugarcane-biofuel production and assess estimates of N use efficiency (NUE) and N losses based on future scenarios, as well as for life-cycle assessments of bioenergy production. Approximately 60 % of N-based fertilizer applied to sugarcane fields in Brazil is recovered by plants and soils, whereas N losses to leaching and N 2 O emissions can average 5.6 and 1.84 % of the total applied N, respectively. Maintenance of trash, rotation with N-fixing legume species, and optimization of byproducts usage have potential for reducing the N requirements of sugarcane cultivation in Brazil. Moreover, the development of sugarcane genotypes with higher NUEs, along with management systems that consider soil capacity of mineralization, is required for improving the NUE of sugarcane. Strategies to maintain N as NH 4 + in sugarcane-cropped soils also have the potential to reduce N losses and enhance NUE. The development of second-generation biofuels is important for increasing biofuel production while simultaneously maintaining N rates and improving NUE, and sugarcane systems in Brazil show potential for sustainable biofuel production with low N rates and limited N 2 O losses. Reducing N rates in sugarcane fields is thus necessary for improving sugarcane-based biofuel production and reducing its environmental impacts.
Editor: New York: Springer US
Idioma: Inglês

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Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

Otto, R. ; Castro, S. A. Q. ; Mariano, E. ; Castro, S. G. Q. ; Franco, H. C. J. ; Trivelin, P. C. O.

New York: Springer US

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