Data/hora: 03/06/2024 11:09:13

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