Data/hora: 02/06/2024 02:44:15

Biblioteca(s): | Embrapa Agrobiologia; Embrapa Pantanal.
Data corrente: | 27/06/1995
Data da última atualização: | 05/07/1996
Autoria: | JORDAN, C.; CASKEY, W.; ESCALANTE, G.; HERRERA, R.; MONTAGNINI, F.; TODD, R.; UHL, C.
Título: | Nitrogen dynamics during conversion of primary Amazonian rain forest to slash and burn agriculture.
Ano de publicação: | 1983
Fonte/Imprenta: | Oikos, v.40, n.1, p.131-139, 1983.

Idioma:

Inglês
Português

Conteúdo: | The standing stocksand fluxes of nitrogen were measured for four years in an experimental slah and burn agricultural site and control forest in the Amazon Basin of Venezuela. During the study, there was a decrease of about 15% in nitrogen in the system as a whole due to leaching, harvesting, and dednitrification. However, nitrogen levels in the soil did not change, due to replenishment by nitrogen entering the soil from decomposing slash. Since nitrogen levels in the soil remained high, scarcity of nitrogen is probably not responsible for the observed decline in crop yields, and lack of nitrogen is not expected to affect succession in the abandoned agricultural plot.
Palavras-Chave: | Amazon Basin of Venezuela; Burn agriculture; Dinamica; Nitrogen synamics; Queima; Rain forest.
Thesagro: | Agricultura; Agronomia; Fertilidade do Solo; Floresta Tropical; Matéria Orgânica; Nitrogênio; Rotação de Cultura.
Thesaurus Nal: | Amazonia.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)

Exemplares:

CNPAB - (9235-1) - ADC - SP - -- -  -  - 07649 - DIS
CPAP - (32655-1) - ADD - SP - -- - SP3023 -  - 3023 - DIS