Data/hora: 20/06/2024 20:26:55

Biblioteca(s): | Embrapa Clima Temperado.
Data corrente: | 15/03/2023
Data da última atualização: | 15/03/2023
Autoria: | NUNES, R. S. G.; DELOSS, A. DE M.; MARTINAZZO, R.; BAMBERG, A. L.; SILVEIRA, C. A. P.; BAYER, C.; SANTOS, D. C. DOS; VIEIRA, F. C. B.
Afiliação: | ROSANGELA SILVA GONCALVES NUNES, UNIVERSIDADE FEDERAL DO PAMPA; ALISSON DE MELLO DELOSS, UNIVERSDIDADE FEDERAL DO PAMPA; ROSANE MARTINAZZO, CPACT; ADILSON LUIS BAMBERG, CPACT; CARLOS AUGUSTO POSSER SILVEIRA, CPACT; CIMELIO BAYER, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; DAIANE CARVALHO DOS SANTOS, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; FREDERICO COSTA BEBER VIEIRA, UNIVERSIDADE FEDERAL DO PAMPA.
Título: | Mitigation of ammonia and greenhouse gases emissions from urea coated with oil shale residues in a silvopastoral system.
Ano de publicação: | 2023
Fonte/Imprenta: | Journal of Environmental Management, v. 326, 116779, 2023.
ISSN: | 0301-4797
Idioma: | Inglês
Conteúdo: | The objective of this work was to investigate the viability of using retorted oil shale as urea coating (U + ROS) in the decrease of N losses by ammonia (NH3?N) volatilization. The experiment was carried out in a silvopastoral system with a randomized block design with split-plots. The main treatments consisted of spatial arrangements of the trees, while the subdivision of the plots constituted the surface application of common urea (U) and retorted oil shale-coated urea (U + ROS) for the pasture. In addition to NH3 measurements, fluxes of N2O and CH4 in the soil were determined, as well as soil moisture and contents of mineral N (0?5 cm). Independently of tree spacing, the use of ROS along with urea (U + ROS) showed a mean decrease of 15.9% in the accumulated NH3 volatilization and 24.1% in the peaks of emission, although it was not significantly different from the U treatment (P <0.10). In addition, it did not increase significantly the N2O and CH4 emissions, evidencing a potential to decrease N losses by ammonia volatilization, with no impact on greenhouse gases emissions from the soil.
Palavras-Chave: | Xisto betuminoso.
Thesagro: | Fertilizante Nitrogenado; Metano.
Thesaurus Nal: | Oil shale.
Categoria do assunto: | --
Registro original: | Embrapa Clima Temperado (CPACT)
Exemplares: | CPACT - (22555-1) - UPC - AP - DD -  -  -  - DIS