Data/hora: 15/06/2024 18:22:19

Biblioteca(s): 	Embrapa Tabuleiros Costeiros.	
Data corrente: 	14/02/1996	
Data da última atualização: 	16/02/2012	
Autoria: 	WILLIAMS, T. D. H.; WALKER, T. W.	
Título: 	Fractionation of phosphate in a maturity sequence of New Zealand basaltic soil profiles: I	
Ano de publicação: 	1969	
Fonte/Imprenta: 	Soil Science, v. 107, p. 22-30, 1969.	
Idioma: 	Inglês	
Conteúdo: 	Chang and Jackson (6) stated that the transformations of inorganic phosphate during soil weathering followed the sequence: calcium phosphate, aluminum phosphate, iron phosphate, occluded phosphate. In proposing this theory they took the view that aluminum and iron bound phosphate in soils was predominantly in the form of discrete crystalline phases such as variscite, strengite, etc. This view, referred to here as the "discrete phosphate" theory, has often been questioned, for example in recent papers by Bache (1,2), Bauwin and Tyner (3), Hsu (11) and Raupach (18). The Alternative theory, called here the "dispersed phosphate" theory, regards iron and aluminum bound phosphate in soils as consisting of phosphate ions chemisorbed on the surfaces or occluded.	
Palavras-Chave: 	Fertilização; Nova Zelandia; Profiles.	
Thesagro: 	Fósforo; Levantamento; Solo.	
Thesaurus Nal: 	soil.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Tabuleiros Costeiros (CPATC)	
Exemplares: 	CPATC - (12778-1) - ADD - SP - DD -  -  -  - DIS