Modelo de produção de mudas de espécies arbóreas da Caatinga

Abstract

The production of seedlings in nursery has several difficulties that cause a high mortality during the initial stages of production. In order to optimize productivity in nurseries that aim to restore the Caatinga, the purpose of this work is to define the best substrate composition for the production of native seedlings of this phytophysiognomic domain. The experiment was developed at São Bento Seedlings Nursery, Ourolândia, BA. Seedlings of nine native Caatinga species have grown in seven different substrate compositions, which included the use of sheep manure and Agave sisalana residue. Seedlings were analyzed for height, number of leaves and survival for three months. The results showed that the species present different responses to the substrates; the substrates composed of more components are better for the species analyzed in this study; Agave sisalana residue should be administered in low proportions; and the presence of sheep manure does not influence the overall performance of the seedlings of the species analyzed in this study.