Resumen

FIGUEIREDO, Fábio Afonso Mazzei Moura de Assis et al. Biometric variation effect of eucalipt clonal cuttings on the growth in the field. Rev. Árvore [online]. 2011, vol.35, n.1, pp. 1-11. ISSN 0100-6762.  http://dx.doi.org/10.1590/S0100-67622011000100001.

This work aimed to evaluate the height and root collar diameter effects of the hybrid Eucalyptus grandis x E. urophylla cuttings on the growth after planting in the Aracruz-ES, Mucuri-BA, Montanha-ES and Carlos Chagas-MG sites. The selected classes were: high cuttings with thick root collar diameter (AG), high cuttings with averaged size diameter (AM), average height with thick diameter ( MG), average height and average diameter (MM) , low cutting with average size diameter (PM) and low cutting with fine diameter roots (PF). The values of the classes were: height- A (31-40 cm), M (21-30 cm) and P (10-20 cm); root collar diameter- G (3.1-4.0 cm), M (2.1-3.0 mm) and F (1.5-2.0 mm). The cuttings, 90 days after transplanting to tubes, were taken as hardened and outplanted. The evaluations were in height (A), diameters (D) were measured at the 1st, 2nd, 3rd, 6th and 12th months. Leaf dry mass, wood, bark, branches and fine, average size and thick roots were evaluated at the 6th month. Higher and thicker cutting presented higher initial growth, although the differences showed decreasing values over time. Carlos Chagas showed the worst growth conditions.

Palabras llave : Cutting quality; Morphological characteristics; Clonal cutting and Eucalyptus spp.