Root System Morphology of Ipê-Roxo Tree Grown in Soil Subjected to Phosphorus Application in Subtropical Climate Region

Phosphorus (P) availability in subtropical soils does not often meet the nutritional demand of native tree species such as ipê-roxo (Handroanthus heptaphyllus); therefore, it is necessary to supply P at planting. However, impact on root system growth remains unknown. The aim current study was investigate effect application morphology H. heptaphyllus plants over a 36-month period climate region. During experiment, subjected fertilization with 40 kg ha−1 were compared untreated control. Plant roots scanned through minirhizotron 18 and 36 months after transplant (MAT), generated images used determine total length, mean diameter volume. height leaf concentrations also evaluated. enhanced whole plant more evident MAT, when soil decreased. results give important information cultivation presenting low availability.