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Sazonalidade do incremento em diâmetro do tronco de árvores de Eucalyptus grandis pelo uso de dendrômetros

Sette Junior C.R., Tomazello Filho M., Lousada J.L., Laclau J.P.. 2012. Ciência Florestal, 22 (4) : p. 763-775.

The present work aimed to evaluate the seasonal increment in diameter of Eucalyptus grandis trees for 24 months and its relationship with the climatic variables and fertilization with nitrogen and with sewer mud. The trees were planted in the spacing of 3 x 2 m and fertilized with nitrogen (planting, 6, 12, 18 months) and sewer mud (planting and 8 months). 20 trees were selected by treatment according witch the distribution of basal area and installed dendrometer bands at a 1.3 meter. The results showed a clear effect of the climatic variables on the seasonal increment in diameter of trees, being observed a delay period (lag) of 28 days for the answer of the trees in relation to the climatic variables. Regading to the fertilization effect, it was observed that the increment of trunk diameter was higher in the eucalyptus trees with organic in relation to mineral fertilization with nitrogen.

Mots-clés : engrais azoté; engrais organique; fertilisation; croissance; dendrométrie; facteur climatique; variation saisonnière; eucalyptus grandis; sao paulo

Thématique : Production forestière; Physiologie végétale : croissance et développement; Fertilisation

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