Data/hora: 04/06/2024 11:22:20

Biblioteca(s): 	Embrapa Unidades Centrais.	
Data corrente: 	18/02/2002	
Data da última atualização: 	18/02/2002	
Autoria: 	KLAUSNER, S. D.; SUHET, A. R.; DUXBURY, J. M.	
Título: 	Estimating Nitrogen Mineralization in a "Cerrado" Dark-Red Latosol, by Laboratory Incubation, and the Effect of Soil Sample Disturbance.	
Ano de publicação: 	1990	
Fonte/Imprenta: 	Pesquisa Agropecuária Brasileira, Brasília, V. 25, n.4, p. 617-623, abr.1990	
Idioma: 	Inglês	
Conteúdo: 	Four dark-red latosols (Haplustox) were sampled at or near the "Centro de Pesquisa Agropecuária dos Cerrados - CPAC" - (Cerrados Agriicultural Research Center), in Planaltina, DF, Brazil. A laboratory soil incubation study, at 35ºC and 0.25 bar water tension, was conducted to evaluate the effect of soil disturbance on N mineralization and to determine the suitability of an incubation procedure for estimating N mineralization in the field. Mineralization rates ranged from 1.2 to 8.8 kg N ha-1 wk-1 over a twelve-week period. The data suggested that as long as there is some degree of soil aggregation, soil disturbance had no effect on N mineralization. The amount of N mineralized during the incubation period in the laboratory showed a low correlation with the N mineralization in the field.	
Palavras-Chave: 	nitrogen analysis in soil; savanna.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Unidades Centrais (AI-SEDE)	
Exemplares: 	AI-SEDE - (21417-1) - UMT - AP - -- - 63072081 - P474 -  - DIS