Data/hora: 03/06/2024 17:03:14

Biblioteca(s): | Embrapa Suínos e Aves.
Data corrente: | 27/10/2017
Data da última atualização: | 09/05/2018
Autoria: | WUADEN, C. R.; NICOLOSO, R. da S.; GRAVE, R. A.; PIGOSSO, A.
Afiliação: | CAMILA ROSANE WUADEN, UDESC/Lages; RODRIGO DA SILVEIRA NICOLOSO, CNPSA; ROBERTO ANDRÉ GRAVE, IFC/Concórdia; ADRIANA PIGOSSO, FACC.
Título: | Soil organic carbon pools as affected by tillage systems and organic nitrogen sources.
Ano de publicação: | 2017
Fonte/Imprenta: | In: SIMPÓSIO INTERNACIONAL SOBRE GERENCIAMENTO DE RESÍDUOS AGROPECUÁRIOS E AGROINDUSTRIAIS, 5., 2017, Foz do Iguaçu, Anais... Concórdia: Sbera: Embrapa Suínos e Aves, 2017. SIGERA. p. 41-44.
Idioma: | Inglês
Conteúdo: | ABSTRACT: We assessed the impact of organic N sources on total organic carbon (TOC), particulate organic carbon (POC), and mineral-associated organic carbon (MAOC) pools in a Nitisol from Southern Brazil under contrasting soil tillage systems. The tillage systems were conventional tillage (CT) and no-tillage (NT). The tested N sources were: 140 kg N ha-1 (total N input) either as mineral fertilizer (urea; MIN), pig slurry (PS), anaerobically digested pig slurry (ADS) and composted pig slurry (CS), besides a control without fertilization (CTR). TOC stocks decreased by 1.0 and 5.1 Mg C ha-1 after two years of CT in both 0-5 and 0-30 cm soil layers, respectively. NT increased TOC stocks by 2.3 Mg C ha-1 at the soil surface and decrease by 1.7 Mg C ha-1 at the 0-30 cm soil layer. NT had higher POC and MAOC stocks than the CT soil. POC was a more sensitive pool than MAOC in response to soil tillage and fertilization practices. Long-term and continuous assessment of SOC pools is needed for evaluation of the impact of organic N sources for C sequestration in NT soil.
Palavras-Chave: | Carbono orgânico; Nitrogênio orgânico.
Thesagro: | Manejo do solo; Plantio.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/165681/1/final8452.pdf
Registro original: | Embrapa Suínos e Aves (CNPSA)
Exemplares: | CNPSA - (21157-1) - UPC - AA - DD -  -  -  - DIS