Organic management increases soil nitrogen but not carbon content in a tropical citrus orchard with pronounced N2O emissions (2019)
- Authors:
- Escanhoela, Andréa Sibila Bisca - Universidade Federal de São Carlos (UFSCar)
- Pitombo, Leonardo Machado
- Brandani, Carolina Braga - Universidade Federal de São Carlos (UFSCar)
- Navarrete, Acácio Aparecido - Universidade Federal de São Carlos (UFSCar)
- Bento, Camila Bolfarini - Universidade Federal de São Carlos (UFSCar)
- Carmo, Janaína Braga do - Universidade Federal de São Carlos (UFSCar)
- Autor USP: PITOMBO, LEONARDO MACHADO - FSP
- Unidade: FSP
- DOI: 10.1016/j.jenvman.2018.11.109
- Subjects: AGRICULTURA ALTERNATIVA; POMARES; ISÓTOPOS ESTÁVEIS; NITROGÊNIO; EFEITO ESTUFA
- Language: Inglês
- Abstract: The use of organic amendments is important for the sustainability of organic farming, with implications for soil organic matter turnover, nutrient cycling and greenhouse gases (GHGs) emissions to the atmosphere. Here, we investigated how long-term citrus organic farming influenced carbon sequestration and GHG emissions under organic and conventional management. We assessed the effects of management systems on soil organic matter dynamics and GHG emissions, focusing on N2O direct emissions from fertilizers. Soil stable isotope C and N compositions (0–100 cm) were used as parameters to assess changes in soil organic matter dynamics, with native forest as the reference. After the conversion from forest to orange orchard, stocks of soil C increased approximately 40 Mg ha−1, whereas stocks were similar in the organic and conventional treatments. Enrichment of 13C through the entire soil profile showed that organic matter from fertilizer replaced the original soil C by at least 20%, considering that poultry was fed only with C4 plants. By contrast, organic farming increased soil N stocks and inorganic N. Nitrogen emission factors for inorganic and organic fertilizers were 1.47 and 3.14, respectively. Organic management increased soil GHG emissions, primarily N2O emissions. Carbon emissions either as CO2 or CH4 were greater at the mid-rows than those under the crop canopy. We conclude that organic management did not promote C sequestration after six years of management. Moreover, organic management increased N2O emissions, and the GHG balance was more negative for organic than that for conventional farming when the ratio between crop harvest and emissions was determined
- Imprenta:
- Source:
- Título do periódico: Journal of Environmental Management
- ISSN: 0301-4797
- Volume/Número/Paginação/Ano: v.234, p.326-335, 2019
- Este periódico é de assinatura
- Este artigo NÃO é de acesso aberto
- Cor do Acesso Aberto: closed
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ABNT
ESCANHOELA, Andréa Sibila Bisca et al. Organic management increases soil nitrogen but not carbon content in a tropical citrus orchard with pronounced N2O emissions. Journal of Environmental Management, v. 234, p. 326-335, 2019Tradução . . Disponível em: https://doi.org/10.1016/j.jenvman.2018.11.109. Acesso em: 28 mar. 2024. -
APA
Escanhoela, A. S. B., Pitombo, L. M., Brandani, C. B., Navarrete, A. A., Bento, C. B., & Carmo, J. B. do. (2019). Organic management increases soil nitrogen but not carbon content in a tropical citrus orchard with pronounced N2O emissions. Journal of Environmental Management, 234, 326-335. doi:10.1016/j.jenvman.2018.11.109 -
NLM
Escanhoela ASB, Pitombo LM, Brandani CB, Navarrete AA, Bento CB, Carmo JB do. Organic management increases soil nitrogen but not carbon content in a tropical citrus orchard with pronounced N2O emissions [Internet]. Journal of Environmental Management. 2019 ;234 326-335.[citado 2024 mar. 28 ] Available from: https://doi.org/10.1016/j.jenvman.2018.11.109 -
Vancouver
Escanhoela ASB, Pitombo LM, Brandani CB, Navarrete AA, Bento CB, Carmo JB do. Organic management increases soil nitrogen but not carbon content in a tropical citrus orchard with pronounced N2O emissions [Internet]. Journal of Environmental Management. 2019 ;234 326-335.[citado 2024 mar. 28 ] Available from: https://doi.org/10.1016/j.jenvman.2018.11.109 - Spatial modeling applied to environmental monitoring: identifying sources of potentially toxic metals in aquatic system
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Informações sobre o DOI: 10.1016/j.jenvman.2018.11.109 (Fonte: oaDOI API)
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