English

Mario Zuffo Alan,Roberta Guilherme Scheila,De Oliveira Ribeiro Flaviane,Maria Monteiro Borges Isabella,De Oliveira Sousa Tiago,Mario Zuffo J Uacute Nior Joacir,Sousa Dos Santos Adaniel,Lima Fonseca W Eacute Verson,Martins Carvalho Rez Acirc Nio,Vinicius Zambiazzi Everton

doi:10.5897/ajar2016.11250

Abstract

This study aimed to evaluate the effect of substrates in the emergence and early development of Baru seedlings. The experiment was performed in a greenhouse in a completely randomized design with five treatments (substrates) and four replications. The substrates were: S1) Oxisol; S2) Oxisol + washed sand (1: 1 v: v); S3) washed sand; S4)  Oxisol + washed sand + manure (1: 1: 1 v: v: v); S5) Oxisol + sand washed + poultry litter (1: 1: 1 v: v: v). The emergence, emergence speed index, seedling height (SH), stem diameter (SD), root length, shoot dry mass (SDM), root dry mass (RDM), SH/SD and SDM/RDM ratios and the Dickson quality index were evaluated. The emergence and early development of seedlings were influenced by the type of substrate. The Oxisol substrate is the most efficient for the early development of Baru seedlings. Key words: Dipteryx alata Vog, emergence, germination, reforestation.

Highlights

Baru (Dipteryx alata Vog., Fabaceae) is a native forest species in Brazil that is preferably propagated via seeds
This study aimed to evaluate the effect of substrates in the emergence and early development of Baru seedlings
The emergence and early development of seedlings were influenced by the type of substrate

Summary

Introduction

Baru (Dipteryx alata Vog., Fabaceae) is a native forest species in Brazil that is preferably propagated via seeds. The species is important for reforestation, wood production and human consumption (Sano et al, 2006). Baru fruits and seeds show great variations (Corrêa et al, 2000; Corrêa et al, 2008; Zuffo et al 2014a). Due to the great importance of Baru in food and for being a reforestation species, the recovery of areas with this species becomes timely, being important to produce seedlings with high quality and low cost (Zuffo et al, 2014b), so that the production of seedlings becomes feasible. In the production of seedlings, the substrate to be used is one of the most important factors because it provides ideal conditions for the seedling germination and the root system development (Negreiro et al, 2004; Ajalla et al, 2012).

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