Abstract

RODRIGUEZ-JUAREZ, Mitzy I. et al. Boron fertilization in plantations of Eucalyptus urophylla S. T. Blake in Tabasco. Rev. Chapingo ser. cienc. for. ambient [online]. 2014, vol.20, n.2, pp.203-213. ISSN 2007-4018.  https://doi.org/10.5154/r.rchscfa.2013.09.038.

This study was carried out in commercial Eucalyptus urophylla plantations owned by the Forestaciones Operativas de México, S.A. de C.V. (FOMEX) company in Huimanguillo, Tabasco, Mexico, to determine the effect of boron (B) fertilization on the growth of this species. Follow-up was given to 199 E. urophylla treesthat received different B doses (0, 6 and 12 g·tree^-1) during establishment. Tree diameter and height were measured at 1.5, 4.5 and 11 years of age. Destructive sampling was performed by separating the bole, branches, twigs + leaves to quantify biomass and its distribution. In addition, total leaf nutrient content was evaluated and the response to B application was measured using vector analysis. Results showed that B fertilization favored growth in height and wood volume, but this effect was not observed in aerial biomass accumulation. Vector analysis showed increased leaf P, K and Ca content when B was applied at a dose of 6 g·tree^-1. At the higher dose (12 g·tree^-1), foliar biomass was lower, presenting similar net nutrient contents and concentrations to those of the smallest leaves.

Keywords : Tree growth; aerial biomass; nutrients; vector analysis.

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