Data/hora: 09/06/2024 09:43:02

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	31/03/2006	
Data da última atualização: 	14/04/2008	
Autoria: 	BAYER, C.; MARTIN-NETO, L.; MIELNICZUK, J.; MILORI, D. M. P.; BAGNATO, V. S.; SAAB, S. da C.	
Título: 	Tillage and cropping systems effects on soil humic acids characterstics as determined by electron spin resonace and fluorescence spectroscopies.	
Ano de publicação: 	2000	
Fonte/Imprenta: 	In: INTERNATIONAL MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY-IHSS, 10., 2000, Toulouse, France. Entering the third millenium with a common approach to humic substances and organic matter in water, soil and sediments: proceedings... [S.l.]: IHSS, 2000. v.1, p. 175-178.	
Idioma: 	Inglês	
Conteúdo: 	Management systems effect on soil organic matter (SOM) storage has been well characterized, mainly under temperate climatic conditions. In the tropical and subtropical chimates, studies demonstrated to be possible maintain or increase SOM storage in cultivated soils with no-tillage and high crop residue additions to the soil surface. Changes in SOM structure also can occur. So far most of the research on this information exists on this important issue in the tropical and subtropical regions. The use of conventional chemical metods and advanced physico-chemical tehcniques including electron spin resonance (ESR) an fluorescentce spectroscopies have allowed the elucidation of several aspects of the chemical structures, functionalities and reactivity of SOM.	
Palavras-Chave: 	Ácidos húmicos; ESR; SOM.	
Thesaurus Nal: 	soil organic matter.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (9708-1) - UPC - SP - -- - PROCI-00.00016 -  - 2000.00016 - DIS