Data/hora: 15/06/2024 15:34:07

Biblioteca(s): | Embrapa Amazônia Ocidental.
Data corrente: | 04/12/2000
Data da última atualização: | 17/06/2015
Autoria: | CAMPOS, C. E. B.; LEHMANN, J.
Afiliação: | Bolsista CNPq; University of Bayreuth.
Título: | Contrasting tree effects on soil P sorption and availability on a Xanthic Ferralsol.
Ano de publicação: | 2000
Fonte/Imprenta: | In: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS, 2000, Hamburg. Programa and abstracts... Hamburg: University, 2000.
Páginas: | p. 174.
Idioma: | Inglês
Conteúdo: | The central objective of these work is the investigation of the availability of soil P as affected by two tree species (cupuacu, urucu, pueraria) with widely different P return, in tne Manaus-AM (Brasil). Phosphorus adsorption did not increase with an exposure longer than 8 h. Therefore, adsorption isotherms can be done within 8 h in the studied soils. In general, about 50% of the added P were adsorbed by the soil matrix. The adsorption decreased for soils which received higher amounts of P fertilizer, indicating that adsorption sities were already blocked by previous fertilization. soils under cupuacu adsorbed more of the added P than soil under ururcu (annatto). This can be explained by the high amounts of organic P which is present in soils under urucu as an effect of high P recycling through litterfall.
Palavras-Chave: | Agrofloresta; Cultivo multiple; Fertilizers application; Potash fertilizers; Root.
Thesagro: | Absorção; Adubação; Bactris Gasipaes; Conservação do Solo; Cupuaçu; Fertilizante Fosfatado; Floresta Tropical Úmida; Pueraria Phaseoloides; Pupunha; Raiz; Theobroma Grandiflorum.
Thesaurus Nal: | adsorption; agroforestry; multiple cropping; soil conservation; tropical rain forests.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/125524/1/p.-174.pdf
Registro original: | Embrapa Amazônia Ocidental (CPAA)
Exemplares: | CPAA - (5618-1) - UPC - RA - PP - R634.99 - G275p - 2000.00193 - DIS