Análise de comprimento da raiz de Tabebuia aurea (Manso) Benth. and Hook e Handroanthus impetiginosus (Mart. ex DC.) Mattos em sistema de produção vegetal no Cariri Paraibano.

Abstract

Tabebuia aurea (Manso) Benth. & Hook and Handroanthus impetiginosus (Mart. ex DC.) Mattos are species with high socioeconomic and environmental potential, therefore, information is needed on the production of seedlings of these species. The objective of this work was to evaluate the length of the main root of T. aurea and H. impetiginosus seedlings in a plant production system in Paraiban Semiarid. The seeds were collected from an adult matrix in December 2017 in the city of Sumé. The work was carried out in the nursery of the Laboratory of Ecology and Botany - LAEB/UFCG/CDSA under conditions of 50% shading in polyethylene trays containing sand as substrate. The sowing was performed on December 31, 2017. It was evaluated daily and verified the quantity of individuals that emerged and at 30 days after sowing was done the seedling removal and the determination of the main root length. T. aurea root length levels ranged from 3.0 to 20.0 cm. Related the H. impetiginosus, it was found that root length levels ranged from 3.0 to 15.0 cm. H. impetiginosus was distributed in a smaller number of classes and with a larger number of individuals in the more representative classes in relation to T. aurea, pointing to a more homogeneous development pattern. Thus, knowledge of the development of these species becomes fundamental for the sustainable development of the semiarid region.