Abstract
ABSTRACT Trema micrantha (L.) Blume is a neotropical multipurpose tree species, which could be used in forest restoration and agroforestry. Several cultures, however, require liming to satisfactory yields in acid soils. Therefore, it is important to determine the effect of liming to this native species, in order to include it in agroforestry associations. The aim of this work was to evaluate the morphological changes of T. micrantha, including the calcium oxalate (druses) and cystolith density, as caused by the calcium carbonate (CaCO3) addition. The assay included three treatments: control, pH 5.3; treatment 1, pH 5.5; treatment 2, pH 6.0. The liming reduced the root biomass and increased the shoot biomass. The leaf specific mass and nutrients concentration were not changed. The leaves presented higher density of druses in treatment 2. The cystolith density was not modified, but the cystolith size was increased by the liming. The results indicate liming tolerance in this species.
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