Avaliação do desenvolvimento de mudas de eucalipto: alternativas de revitalização de mudas e efeito de diferentes substratos

Abstract

The quality of the seedlings is affected, among other factors, by the type of substrate and the residence time of the seedlings in nurseries when high makes its use in the field setting in your discard causing economic damage. This study aimed to assess the development of Eucalyptus seedlings when submitted to different types of substrates and alternatives for the revitalization of seedlings in late age: alternatives for the revitalization of seedlings and effect of different substrates. The Chapter I addressed the assessment of the effect of pruning in the revitalization of late seedlings of Eucalyptus in nursery conditions and field. The revitalisation through pruning on the basis of the neck and root has resulted in the best alternative for regeneration of seedlings. Chapter II assessed the effect of substrates and clones in the development of eucalyptus seedlings, from a test factorial 2x7 (2 genetic materials and 7 substrates), the conclusion is that the clones showed differences in the rooting and selection at 70 and 120 days of age, and the substrates, Carolina Forest Soil® (CAR), Amafibra (AMA) and the mixture at a ratio of 1:1 (v.v) Carolina Forest Soil® and Trimix (CAR TRI) showed good development in rooting, percentage of healthy seedlings and quality, are suitable for the production of Eucalyptus seedlings.