Data/hora: 05/06/2024 14:22:14

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	11/09/2003	
Data da última atualização: 	24/02/2010	
Autoria: 	FERREIRA, M.; MORENO, R.; GONÇALVES, P.; MATTOSO, L. H. C.	
Afiliação: 	Embrapa Instrumentação Agropecuária, São Carlos, SP.	
Título: 	Evaluation of natural rubber from clones of Hevea brasiliensis.	
Ano de publicação: 	2002	
Fonte/Imprenta: 	Rubber Chemistry Technology, Akron, v. 75, n. 1, p. 171-177, Mar.-Apr. 2002.	
Idioma: 	Inglês	
Conteúdo: 	The latex and natural rubber from rubber trees [Hevea brasiliensis (Willd. exAdr. de Juss.) Muell Aerg.] from clones (RRIM 600, IAN 873, GT 1 and PB 252) recommended to the state of São Paulo, Brazil, were studied in three different tapping systems. The parameters studied were dry rubber content (DRC), percentages of ash and of nitrogen, Wallace Plasticity (Po) and Mooney Viscosity (Vr). The rubber properties vary considerably as a function of clone type, tapping method and season of the year. DRC tends to decrease in the beginning of the dry, cold season (May and June), whereas both nitrogen % and ash% increase in the same period. A good linear correlation was obtained for Po and Vr. The highest Po and Vr were obtained for RRIM 600.	
Palavras-Chave: 	Borracha natural; Latex natural.	
Thesagro: 	Hevea Brasiliensis; Latex.	
Thesaurus Nal: 	rubber.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (8032-1) - UMT - SP - -- - PROCI-02.00122 -  - 2002.00122 - DIS