Data/hora: 24/06/2024 00:41:47

Biblioteca(s): 	Embrapa Meio Norte / UEP-Parnaíba.	
Data corrente: 	01/10/1997	
Data da última atualização: 	01/10/1997	
Autoria: 	EGGINTON, G. M.; SMITH, K. A.	
Título: 	Losses of nitrogen by denitrification from a grassland soil fertilizer with cattle slurry and calcium nitrate.	
Ano de publicação: 	1980	
Fonte/Imprenta: 	Journal of Soil Science, v.37, p.69-80, 1980.	
Idioma: 	Inglês	
Conteúdo: 	Losses of N by denitrification from an imperfectly drained grassland soil were measured by the acetylene-inhibition technique over a l-yr period, during which applications of up 200 kg ha-1 of N as cattle slurry or calcium nitrate were made. The quantities of N lost from nitrate-treated soil were much greater than from slury-treated areas and ranged up to 21% of the N applied. THe losses occurred predominantly over brief periods following fertilizer application in hte spring. Ratios of N released as N2 to that release as N2O increased as denitrification rates increased. The highest ratio recorded, 24 may have been a conservative estimate because inhibition of N2O reduction may not have been complete on all occasions. Increased respiration was observedin soil prohave been complete on all occasions. Increased respiration was observed in the soil profile as a result of adding C2H2. This effect should be taken into account in interpreting experiments using the C2H2-inhibition technique. 	
Palavras-Chave: 	Fertilizer; Grassland; Losses; Nitrato de calcio.	
Thesagro: 	Desnitrificação; Esterco; Fertilizante; Nitrogênio; Pastagem.	
Thesaurus Nal: 	calcium nitrate; denitrification; nitrogen.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP)	
Exemplares: 	CPAMN-UEPP - (7963-1) - ADD - SP - -- - 97.00155 -  - 1997.00155 - DIS