INITIAL INCREASE OF “GUATAMBÚ”, Balfourodendron riedelianum (Engl.) Engl. IN DIFFERENT LUMINOSITY INTENSITIES

• Autor(a) principal: Farias, José Antônio Cardoso
• Data de Publicação: 1999
• Outros Autores: Oliveira, Odilson dos Santos, Franco, Elci Terezinha Henz
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/311
• topic: Balfourodendron riedelianum; increase; luminosity

In the nursery at the Department of Science Foresty, of the UFSM, during 8 months, was analysed the behaviour of the seedlings of Balfouodendron riedelianum (Engl.) Engl., in different degrees of luminosity, in the initial growth stage. Blocks with four repetitions and with four levels of luminosity (30, 50, 70 and 100%) were used (at random) as an experimental delineation. The height and neck diameters were take for each 30 (thirty) days period, totaling 5 (five) evaluations, obtaining a final result statistically superior in 30% and 79,59% of luminosity respectively. The total fesh mass, of air part and radicular was obtained with 76,21% 69,98% and 78,75% of luminosity, respectively. The maximun production of drought matter of seedlings was obtained with 67,56% of luminosity, the larger root/aerial part relation with 78,35% and the best radicular prolongation with 76,16% of luminosity, In all of the evaluated parameters, the treatment where the seedlings were exposed to the total light showed a deficient development, with a high rate of mortality. The Balfourodendron riedelianum (Engl.) Engl., according to the aspects seen above, appears to be a specie withfisiologic plasticity.