Efeito do sombreamento e do tipo de recipiente no desenvolvimento inicial de mudas de Bauhinia forficata Link e Peltophorum dubium (Spreng.) Taub.

Abstract

The present work seeks to evaluate the influence of shade levels and container type on two native species of the South of Brazil, being Bauhinia forficata Link and Peltophorum dubium (Spreng.) Taub, also popularly known as pata-de-vaca and canafístula. For this, the experiment was conducted in a 2 x 3 factorial scheme, where two containers (tube and plastic bag) and three levels of shading (0, 30 and 50%) were tested. The design was completely randomized and the treatments consisted of: (I) unshaded tubes, (II) 30% shading tubes, (III) 50% shading tubes, (IV) unshaded plastic bag, (V) 30% shading plastic bag and (VI) bag plastic at 50% shading. The evaluations were emergency at 30 days, height, neck diameter, root length, dry mass of shoot and root, as well as the ratio between shoot and root, through dry mass. There was no significant interaction between the factors evaluated in any of the analyzed variables. The pata-de-vaca species showed a significant difference in height and diameter when produced in a plastic bag in full sun, being significantly indifferent in relation to germination. On the other hand, the canafístula showed a better development in a 30% shading tube, showing a significant difference for emergence, neck diameter, aerial dry mass, dry root mass and root to shoot ratio.