Mineral fertilization and limestone on the growth of <em>Eucalyptus camaldulensis</em> seedlings

Abstract

The use of substrates can produce seedlings with adequate morphological characteristics for planting in the field. Therefore, experiment was realized in a nursery in order to evaluate the use of limestone and different fertilizer formulations on the production of Eucalyptus camaldulensis seedlings. The seedlings of the specie were produced in tubetes with a capacity to 160 cm³, originating of seeds that were placed to germinate in sand and vermiculite. When they reach 15 cm of height, the plants were transplanted for the treatments tested: T1 - 100% Plantmax®; T2 - Plantmax® + NPK + lime; T3 Plantmax® + lime + N; T4 - Plantmax® + lime + P; T5 - Plantmax® + lime + K; T6 - Plantmax® + N; T7 - Plantmax® + P; T8 - Plantmax® + K; T9 - Plantmax® + limestone, with ten replications in a completely randomized design. The growth evaluation occurred 90 days after the start of analysis with the measuring height, diameter collect, biomass and, concentrations of macronutrients and B. It was verify that is important to consider the use of Plantmax® as substrate, because it does not release nutrients in adequate concentrations for all species. The best conditions for the seedlings production of E. camaldulensis were with substrate containing Plantmax® + calcário + N; Plantmax® + calcário + P; Plantmax® + N; or Plantmax® + P.