Soil Fertilization and Texture on Boron Accumulation and Wood Volume in Corymbia citriodora (Hook) K.D. Hill & L.A.S Johnson
Antônio Lelis Pinheiro
Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Av. PH. Rolfs s/n, 36570000, Viçosa, MG, Brazil.
Karine Fernandes Caiafa
Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Av. PH. Rolfs s/n, 36570000, Viçosa, MG, Brazil.
Daniel Teixeira Pinheiro *
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH. Rolfs s/n, 36570000, Viçosa, MG, Brazil.
Tássia Fernanda Santos Neri Soares
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH. Rolfs s/n, 36570000, Viçosa, MG, Brazil.
Rodrigo Vieira Leite
Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Av. PH. Rolfs s/n, 36570000, Viçosa, MG, Brazil.
Patrícia Ramalho de Barros
Departamento de Solos e Nutrição de Plantas, Universidade Federal de Viçosa, Av. PH. Rolfs s/n, 36570000, Viçosa, MG, Brazil.
Matheus Ferreira França Teixeira
Departamento de Fitotecnia, Universidade Federal de Viçosa, Av. PH. Rolfs s/n, 36570000, Viçosa, MG, Brazil.
*Author to whom correspondence should be addressed.
Abstract
This study aimed to evaluate the effects of soil fertilization and texture on leaf Boron (B) accumulation and its relation with wood volume of Corymbia citriodora Hill & Johnson. The experiment was set in randomized block with four replications, four B fertilization levels (0, 1.1, 2.2 and 4.4 g.plant-1) in two soils types (sandy and clayey). To determine leaf B content, 25 leaves were collected from the median portion of four trees for each treatment. Leaves were dried on oven and B content was determined by the Azomethine-H method using extract obtained by dry digestion. The diameter at breast height and the total height of 25 trees were collected in all treatments and wood volume was calculated. Data were submitted to analysis of variance and the means adjusted to regression equations. The regression coefficients were evaluated by t-test at 1 and 5% probability. It was verified that clay soil produces more wood, compared to sandy soil. There was a gain increase in foliar B as B doses increased in both soil types. Leaf B affected Corymbia citriodora productivity only in clay soil.
Keywords: Eucalyptus, nutrition, fertility, productivity