Data/hora: 03/06/2024 00:39:43

Biblioteca(s): | Embrapa Amazônia Ocidental.
Data corrente: | 04/12/2000
Data da última atualização: | 04/12/2018
Autoria: | DINKELMEYER, H.; LEHMANN, J.; KAISER, K.; RENCK, A.; TRETER, U.; ZECH, W.
Afiliação: | University of Friedrich-alexander; University of Bayreuth.
Título: | Fate of applied N fertilizer in mixed tree cropping systems in the central Amazon.
Ano de publicação: | 2000
Fonte/Imprenta: | In: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS, 2000, Hamburg. Programa and abstracts... Hamburg: University, 2000.
Páginas: | p. 173.
Idioma: | Inglês
Conteúdo: | The aim of the study was to investigate the fate of 15N in the soil-plant system of a mixed cropping system (pupunha, cupuacu, castanha-do-Para, urucu). Urucu (annatto), cupuacu and pupunha (peach palm) took up more than 90% of the fertilizer under their own canopy. After two weeks castanha-do-Para (Brazil nut) took up more than 70% of the N fertilized to the neighboring tree crops (pupunha, 40%; urucu, 25%; cupuacu, 8%). At the ende of rainy season castanha-do-Para even took up more than 80% from the neighboring trees (pupunha, 42%; urucu, 36%; cupuacu; 6%). Furthermore, pupunha e castanha-do-Para could prevent nutrient leaching with their deep roots and take up N from the subsoil N pool better than urucu and cupuacu. Castanha-do-Para was able to effectively capture N and may contribute to nutrient recycling in the agroforestry. However, this nutrient capture may also lead to nutrient competition and fertilizer placement and amount has to be adjusted accordingly.
Palavras-Chave: | Agrofloresta; Amazonas; Brasil; Fertilizers application; Manaus; Plant soil relations; Root; Urucu.
Thesagro: | Absorção; Adubação; Bactris Gasipaes; Bertholletia Excelsa; Bixa Orellana; Castanha do Para; Conservação do Solo; Cultivo Multiplo; Floresta Tropical Úmida; Nitrogênio; Pupunha; Raiz; Relação Solo-Planta; Theobroma Grandiflorum.
Thesaurus Nal: | absorption; agroforestry; multiple cropping; nitrogen; soil conservation; tropical rain forests.
Categoria do assunto: | --
Registro original: | Embrapa Amazônia Ocidental (CPAA)
Exemplares: | CPAA - (5617-1) - ADD - PL - -- - R634.99 - G375p - 2000.00193 - DIS