Nitrogen fluxes from irrigated common‑bean as affected by mulching and mineral fertilization

Carvalho, M. T. de M.; Madari, B. E.; Leal, W. G. de O.; Costa, Adriana Rodolfo da; Machado, P. L. O. de A.; Silveira, Pedro Marques da; Moreira, J. A. A.; Heinemann, A. B.

doi:10.1590/s0100-204x2013000500003

Cited by 9 publications

(7 citation statements)

References 24 publications

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“…Luizão et al 1989). In irrigation experiments by Vasconcelos et al (2004) and Carvalho et al (2013), N 2 O fluxes increased after irrigation during the dry season in Brazil. Luizão et al (1989) and Sotta et al (2008) reported that finer textured soils have a higher N availability.…”

Section: Introductionmentioning

confidence: 91%

Direct nitrous oxide (N ₂ O) fluxes from soils under different land use in Brazil—a critical review

Meurer

Franko

Stange

et al. 2016

Environ. Res. Lett.

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Brazil typifies the land use changes happening in South America, where natural vegetation is continuously converted into agriculturally used lands, such as cattle pastures and croplands. Such changes in land use are always associated with changes in the soil nutrient cycles and result in altered greenhouse gas fluxes from the soil to the atmosphere. In this study, we analyzed literature values to extract patterns of direct nitrous oxide (N 2 O) emissions from soils of different ecosystems in Brazil. Fluxes from natural ecosystems exhibited a wide range: whereas median annual flux rates were highest in Amazonian and Atlantic rainforests (2.42 and 0.88 kg N ha −1 ), emissions from cerrado soils were close to zero. The decrease in emissions from pastures with increasing time after conversion was associated with pasture degradation. We found comparatively low N 2 O-N fluxes from croplands (−0.07 to 4.26 kg N ha −1 yr −1 , median 0.80 kg N ha −1 yr −1 ) and a low response to N fertilization. Contrary to the assumptions, soil parameters, such as pH, C org , and clay content emerged as poor predictors for N 2 O fluxes. This could be a result of the formation of micro-aggregates, which strongly affect the hydraulic properties of the soil, and consequently define nitrification and denitrification potentials. Since data from croplands mainly derived from areas that had been under natural cerrado vegetation before, it could explain the low emissions under agriculture. Measurements must be more frequent and regionally spread in order to enable sound national estimates. OPEN ACCESS RECEIVED

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Section: Introductionmentioning

confidence: 91%

Direct nitrous oxide (N ₂ O) fluxes from soils under different land use in Brazil—a critical review

Meurer

Franko

Stange

et al. 2016

Environ. Res. Lett.

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“…The absence of a significant effect of WB amendment on N 2 O fluxes was probably linked to the physical structure of the clay Ferralsol and the aerobic nature of the cropping system. Under well-drained conditions, there is no accumulation of water on the soil surface and the major part of the mineral N applied as top dressing could be lost by ammonia volatilization (Carvalho et al, 2013b). Verhoeven and Six (2014) observed no effect of biochar on N 2 O fluxes under aerobic conditions either.…”

Section: Determining Factors and Potential Effects Of Biochar On Soilmentioning

confidence: 97%

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

Novotny

Maia

Carvalho

et al. 2015

Rev. Bras. Ciênc. Solo

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162

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Biochar (carbonized biomass for agricultural use) has been used worldwide as soil amendment and is a technology of particular interest for Brazil, since its "inspiration" is from the historical Terra Preta de Índios (Amazon Dark Earth), and also because Brazil is the world's largest charcoal producer, generating enormous residue quantities in form of fine charcoal and due to the availability of different residual biomasses, mainly from agroindustry (e.g., sugar-cane bagasse; wood and paper-mill wastes; residues from biofuel industries; sewage sludge etc), that can be used for biochar production, making Brazil a key actor in the international scenario in terms of biochar research and utilization). In the last decade, numerous studies on biochar have been carried out and now a vast literature, and excellent reviews, are available. The objective of this paper is therefore to deliver a critical review with some highlights on biochar research, rather than an exhaustive bibliographic review. To this end, some key points considered critical and relevant were selected and the pertinent literature "condensed", with a view to guide future research, rather than analyze trends of the past.

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“…In contrast to the Amazon and Atlantic forests, where N 2 O emissions range from 0.38 to 16 kg ha -1 , with the highest value in the Amazon forest, and the maximum emission of the Atlantic forest is below 3.42 kg ha -1 (Meurer et al, 2016). Soils under natural Cerrado vegetation showed very low and even negative values, with a median emission of 0.14 kg ha -1 and often below the detection limit, as shown in several studies (Metay et al, 2007;Cruvinel et al, 2011;Bustamante et al, 2012;Carvalho et al, 2013;Martins et al, 2015;Santos et al, 2016;Silva et al, 2017;Sato et al, 2017;Oliveira Filho et al, 2020).…”

Section: Continuementioning

confidence: 80%

“…Among the different factors affecting N 2 O emissions in agricultural soils, the conversion of native Cerrado vegetation to agroecosystems favors the emission of N 2 O to the atmosphere, under sugarcane cropping systems (Silva et al, 2017), integrated cropping-livestock production, no-till and conventional tillage (Martins et al, 2015;Sato et al, 2017). In addition, N 2 O emissions are usually associated with soil moisture (Carvalho et al, 2013;Santos et al, 2016) and nitrogen fertilizer application (Carvalho et al, 2016;Silva et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

N2O emissions from soils under different uses in the Brazilian Cerrado - A review

Sousa¹,

Ramos²,

Figueiredo³

et al. 2021

Revista Brasileira De Ciência Do Solo

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The Cerrado (Brazilian savannah) is a biome of great socio-economic and environmental importance to Brazil. The rapid agricultural expansion in the Cerrado biome areas promoted biogeochemical cycles that affect nitrogen and carbon dynamics, leading to increased greenhouse gas (GHG) emissions. In Brazil, nitrous oxide (N 2 O) is the main gas in agriculture, and agricultural practices increase emissions into the atmosphere. This review aimed to assess the influence of agriculture on N 2 O emissions in the Cerrado region, based on existing data in the literature, and extract patterns of direct N 2 O emissions in different agricultural systems in the Cerrado from existing data. A systematic review of data from 36 scientific publications in the Cerrado region with several crop systems revealed that N 2 O emissions varied from 0.15 kg ha -1 in native cerrado to 4.84 kg ha -1 in conventional tillage. Agricultural systems, nitrogen fertilizer application, and crop residues influence N 2 O emissions. One of the strategies to mitigate emissions is the sustainable intensification of farming systems. Cumulative N 2 O emissions in the Cerrado range from 0.001 to 4.84 kg ha -1 in different land-use scenarios. Soil under the conventional tillage system (CT) had the highest emissions, with an overall average of 1.58 kg ha -1 of N 2 O, compared to no-till system (NT) (0.82 kg ha -1 ) and native Cerrado 0.15 kg ha -1 . Integrated crop-livestock (ICL) systems in the Cerrado had emissions with an overall average of 1.68 kg ha -1 , integrated crop-livestock-forest systems (ICLF) had 1.20 ha -1 , and eucalyptus plantations had 0.48 kg ha -1 .

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Nitrogen fluxes from irrigated common‑bean as affected by mulching and mineral fertilization

Cited by 9 publications

References 24 publications

Direct nitrous oxide (N ₂ O) fluxes from soils under different land use in Brazil—a critical review

Direct nitrous oxide (N ₂ O) fluxes from soils under different land use in Brazil—a critical review

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

N2O emissions from soils under different uses in the Brazilian Cerrado - A review

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Nitrogen fluxes from irrigated common‑bean as affected by mulching and mineral fertilization

Cited by 9 publications

References 24 publications

Direct nitrous oxide (N 2 O) fluxes from soils under different land use in Brazil—a critical review

Direct nitrous oxide (N 2 O) fluxes from soils under different land use in Brazil—a critical review

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

N2O emissions from soils under different uses in the Brazilian Cerrado - A review

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Direct nitrous oxide (N ₂ O) fluxes from soils under different land use in Brazil—a critical review

Direct nitrous oxide (N ₂ O) fluxes from soils under different land use in Brazil—a critical review