Seasonal effects on ammonia, nitrous oxide, and methane emissions for beef cattle excreta and urea fertilizer applied to a tropical pasture

Autor(es)

Cardoso, Abmael da Silva ^[1] ; Oliveira, Serena Capriogli ^[1] ; Janusckiewicz, Estella Rosseto ^[2] ; Brito, Liziane Figueiredo ^[1] ; Morgado, Eliane da Silva ^[3] ; Reis, Ricardo Andrade ^[1] ; Ruggieri, Ana Claudia ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Zootecnia, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil

^[2] Univ Estadual Mato Grosso Sul, Rodovia Aquidauana UEMS Km 12, BR-79200970 Aquidauana, MS - Brazil

^[3] Univ Fed Uberlandia, Rua Joao Naves Avila 2121, BR-38408100 Uberlandia, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SOIL & TILLAGE RESEARCH; v. 194, NOV 2019.
• Citações Web of Science: 1

Resumo

In this study we conducted four field trials (two wet- and two dry-season) to quantify N2O and CH4 emissions, NH3 volatilization, and N2O emission factors (EF3PRP) following the application of cattle dung, urine, dung plus urine, and urea fertilizer on a palisade-grass pastureland in Brazil. The EF3PRP differed with treatment and season. Wet season EF3PRP were 0.36%, 1.02%, and 0.84% and dry season EF3PRP were 0.32%,0.47%, and 0.34% for dung, urine, and dung plus urine, respectively. These emission factors are maybe lower than the default proposed by the Intergovernmental Panel on Climate Change (IPCC; 2%). Methane emissions also differed according to the treatment and season, and annualized dung emissions were 0.54 kg CH4 head(-1) year(-1). The fraction of total-N from animal manure and urine emitted as NH3 (FracGASM) in the wet season for dung, urine and dung plus urine was 7.2%, 6.3%, and 6.4%, respectively; lower than the rate of dry season volatilization from urine (14.2%) and dung plus urine (11.5%). Observed FracGASM is probably lower than the IPCC guideline (20%). Emissions of N2O, CH4, and the volatilization of NH3 after urea treatment were not influenced by season; N2O emissions from urea were 0.85%, CH4 emissions were 112 g CH4-C ha(-1), and N-fertilizer lost as NH3 was 16.9%. The emission factors observed in this experiment differed from the IPCC Guidelines; observed N2O emissions were lower than the guideline (1%), and FracGASF was higher than the 10% guideline. (AU)

• Processo FAPESP: 12/04605-1 - Emissões de gases de efeito estufa em pastos de Brachiaria submetidos a diferentes intensidades de pastejo
• Beneficiário: Eliane da Silva Morgado
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/24782-8 - Efeito do biochar sobre a contribuição da nitrificação e desnitrificação para os fluxos de N2O em solo tropical e temperado
• Beneficiário: Abmael da Silva Cardoso
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 13/00204-5 - Perdas de nitrogênio por volatilização e emissão de N2O pelas excretas bovinas em pastagens
• Beneficiário: Serena Capriogli Oliveira
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 11/00060-8 - Balanço de gases de efeito estufa e estratégias de mitigação em pastos de Brachiaria submetidos a diferentes manejos
• Beneficiário: Telma Teresinha Berchielli
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/06718-8 - Balanço de Nitrogênio, emissão de gases de efeito estufa e mitigação de N2O na produção de bovinos de corte em pastagens
• Beneficiário: Abmael da Silva Cardoso
• Modalidade de apoio: Bolsas no Brasil - Doutorado