Data/hora: 01/06/2024 02:51:52

Biblioteca(s): 	Embrapa Florestas.	
Data corrente: 	17/08/1999	
Data da última atualização: 	12/11/2014	
Autoria: 	ANDERSON, C. A.; LADIGES, Y.	
Título: 	A comparison of three populationso of Eucalyptus obliqua L' herit. Growing on acid and calcareous soils in southern Victoria.	
Ano de publicação: 	1978	
Fonte/Imprenta: 	Australian Journal of Botany, Victoria, v.26, n.1, p.93-109, 1978.	
Idioma: 	Inglês	
Conteúdo: 	In the Otways district, E.obliqua exhibits a wide edaphic tolerance; evidence is presented for the existence of ecotypes in this region. A comparison of three populations from acidic loam, neutral sand and alkaline sand soils showed significant differences in yield response when grown under glasshouse conditions. A tall open-forest population, naturally occurring on fertile acidic loams (pH 4.6-5.2), showed a marked reduction in yield, was severely chlorotic and developed red and necrotic patches on leaves when grown on calcareous sands of pH 6.5 and 8.0. Open-forest and low open-forest populations native to the sands of pH 6.5 and 8.0 respectively also developed some chlorosis, but maintained greater yields, particularly on the soil of pH 6.5. Chlorosis in all populations was correlated with decreased levels of chlorophylls a and b, and carotenoids; on soil of pH 8.0, all populations showed increases in Ca, K, Mg, Na, P, and the P/Fe ratio in leaf tissue. Populations showed differing contents of Fe in seedlings (but with no particular trends), and the low open-forest population developed a significantly low P/Fe ratio when grown on leached calcareous soil of pH 6.5.	
Thesagro: 	Crescimento.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Florestas (CNPF)	
Exemplares: 	CNPF - (28384-1) - ADD - SP - -- - SP0464 -  - SP0464 - DIS