Data/hora: 05/06/2024 05:33:52

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	14/07/1992	
Data da última atualização: 	14/07/1992	
Autoria: 	IGUE, K.; FUENTES, R.; BORNEMISZA, E.	
Afiliação: 	IICA-CEIT, Turrialba.	
Título: 	Mineralizacion de P-organico en suelos acidos de Costa Rica.	
Ano de publicação: 	1971	
Fonte/Imprenta: 	Turrialba, v.21, n.1, p.47-52, 1971.	
Idioma: 	Espanhol	
Conteúdo: 	Mineralization of organic phosphorus was studied in three volcanic soils of Costa Rica. The results indicated that for Juray (Alluvial) and Birrisito (vitrandept) mineralization was observed measured by an increase in inorganic P, after 10 months incubation. For Colorado series (distropets) imobilization occured. For the first 3 months of incubation inmobilization was observed for all soils. When inorganic P was fractionated the results show no relationship with mineralizartion, it rather shows variability of the Al-P, Fe-P and Ca-P during the incubation period. Lime application did not show any definite pattern. There was no effect for Colorado soil, but decreased and increased organic-P for Birrisito and Juray respectively. When temperature was compared there was no difference between room temperature (23oC) and 35oC. Phosphate application increased inorganic fractions of P, and increased organic P for Colorado soil. Mineralization seems to have occured for soils high in total P and high in organic P. - The authors.	
Palavras-Chave: 	Regiao tropical; Torride zone.	
Thesagro: 	Acidez; Solo Ácido.	
Thesaurus Nal: 	acid soils; Costa Rica; tropical soils.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPSO - (13835-1) - ADD - SP - -- - 9605 -  - 9605 - DIS