Data/hora: 09/06/2024 09:02:28

Provedor de dados: | 14
País: | Brazil
Título: | Fast soil solution nutrient and water dynamics in top- and subsoil.
Autores: | RENCK, A.; LEHMANN, J.; KAISER, K.; MARQUES, J.; TEIXEIRA, W. G.
Data: | 1999-07-26
Ano: | 1998
Palavras-chave: | Brasil; Amazonas; Manaus; Tropical rain forest; Floresta Tropical Úmida; Relação Solo-Água; Soil water.
Resumo: | Study for find out the short-term dynamics of applied fertilizer. In a soil pit a data logger system connected to tensiometers and TDR was installed up to a depth of 3.5m under pueraria in an agroforestry system (cupuacu, peach palm, Brazil nut, urucum). After a rainfall event, the soil water suction at 0.1m depth increased immediately, and fast responses were seen even up to a depth of 0.9m. This result may indicate that nutrients may be leached very fast even in these soil with high clay contents. The N concentrations in the soil solution relevantly increased at 0.1m depth during the same time period, as shown for peach palm. First, the ammonium concentrations increased, but nitrate contents followed rapidly indicanting a fast nitrification in the studied soils.
Tipo: | Capítulo em livro técnico (INFOTECA-E)
Idioma: | Inglês

Identificador:

4181

http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/668344

Editor: | In: SHIFT PROJECT ENV 45/2. Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Manaus: EMBRAPA-CPAA/BMBF, 1998.
Relação: | Embrapa Amazônia Ocidental - Capítulo em livro técnico (INFOTECA-E)
Formato: | p. 54-57.