SHADING AND SUBSTRATE ON THE PRODUCTION OF SEEDLINGS OF Erythrina velutina Willd.

Erythrina velutina Willd. (Fabaceae) \ue9 utilizada na medicina tradicional do nordeste brasileiro por suas propriedades sudor\uedfica, calmante, emoliente, peitoral e anest\ue9sica local. O objetivo deste estudo foi avaliar o efeito de diferentes substratos e sombreamento na produ\ue7\ue3o de mudas de Erythrina velutina. O delineamento experimental utilizado foi o inteiramente casualizado, em esquema fatorial 5 x 2 (cinco substratos e dois sombreamentos), com quatro repeti\ue7\uf5es e 10 plantas na parcela. Os substratos foram arisco, arisco + esterco bovino 2:1 v/v, arisco + esterco bovino 3:1 v/v, areia + esterco bovino 2:1 v/v e areia + esterco bovino 3:1 v/v. Os sombreamentos foram pleno sol (0% de sobreamento) e 50% de sombreamento. As caracter\uedsticas avaliadas foram o di\ue2metro do coleto, altura, \ue1rea foliar, biomassa verde e seca das ra\uedzes e da parte a\ue9rea, rela\ue7\ue3o altura/di\ue2metro e \uedndice de qualidade de Dickson. N\ue3o houve diferen\ue7a significativa para o di\ue2metro entre os diferentes substratos. O ambiente a pleno sol favoreceu o di\ue2metro e a biomassa das ra\uedzes, enquanto a altura foi favorecida pelo ambiente sombreado. Os substratos com esterco bovino curtido em sua composi\ue7\ue3o favorecem o desenvolvimento das plantas de Erythrina velutina. Mudas de maior qualidade s\ue3o produzidas a pleno sol e no substrato arisco + esterco bovino curtido na propor\ue7\ue3o 2:1.Erythrina velutina Willd. (Fabaceae) is used in traditional medicine in northeastern Brazil for its sudorific properties, soothing, emollient, pectoral and local anesthetic. The aim of this study was to evaluate the effect of substrate and shading on seedlings of Erythrina velutina. The experimental design was completely randomized in factorial scheme 5 x 2 (five substrates and two shades), with four replications and 10 plants in each plot. The substrates were arisco, arisco + cattle manure 2:1 v/v, arisco + cattle manure 3:1 v/v, sand + cattle manure 2:1 v/v, sand + cattle manure 3:1 v/v. The shadings were 0% shading (full sunlight) and 50% shading. The characteristics evaluated were stem diameter, height, leaf area, green and dry biomass of roots and shoots, height/diameter and Dickson quality index.There was no significant difference in diameter between the different substrates. The environment in full sun favored the diameter and the root biomass whereas the height was favored by shade. The substrates with cattle manure in its composition favors the development of plants of Erythrina velutina and higher seedling quality are produced in full sun and substrate arisco + cattle manure in the ratio 2:1