Germinação e crescimento inicial de adenanthera pavonina l. adubada com composto orgânico

Abstract

Substrates composed of organic waste composting from agricultural activities are economic alternatives, and acessible to producers, both family and those that produce on a large scale. As the organic compounds have a varied constitution, information about their germination and initial growth of tree species are essential for the success of their use for the production of seedlings. In this context, objective of this work was to evaluate substrates composed of organic compounds and soil in the germination and initial growth of Adenanthera pavonina L. The experiment was conducted in agreenhouse at the Federal University of Recôncavo da Bahia, at the Center of Agrarian, Environmental and Biological Sciences of the Cruz das Almas Campus – BA. The treatments were arranged in a completely randomized design, consisting of organic compound combined with Latosol samples in the following proportions: (0:100; 20:80; 40:60; 60:40; 80:20 v.v). The seed germination determinants were evaluated at 30 days and seedling growth and quality at 90 days after sowing. The addition of organic compost from the pruning of trees plus cattle manure and goats to the soil compose substrates for the production of seedlings did not influence germination, emergence, germination speed index and seed emergence speed index. The seedlings of Adenanthera pavonina L. grown on substrates consisting of 52.5 : 47.5 (v/v) of organic compound: Latosol presented the highest quality index of Dickson being, therefore, the recommended substrate formulation for the production of seedlings.