Uso de substrato compostado no desenvolvimento de mudas florestais nativas

Abstract

One of the biggest sociaevironmental problems is related to the production of solid waste. The bigger part of this waste is formed from organic materials that are considered useless. The purpose of this work was to perform the composting of brewery waste with bed of turkey poultry in order to obtain stable compound to be applied in the seedlings development of native forest species. The process was carried out in the experimental area of solid waste of UTFPR-FB, with brewery waste and turkey poultry bed. During the development of the process, the parameters temperature, pH, volatile solids content and water content were monitored. When stabilized the compost, this was taken to the nursery, where it was carried out with the planting of five native species, in four different substrate treatments. Only one of the five species tested survived to the end of the experiment, Parapiptadenia rigida (Brenth.) Brenan. At 30 and 60 days, it was observed the height parameters, harvest diameter, amount of leaves, height/diameter relation (H/D), and at 90 days, besides these, the root and shoot dry mass, root length and Dickson Quality Index (DQI). After statistical analysis of the phytomorphological parameters, it was found that the treatments that presented the best results were the ones with predominance of the commercial substrate, which was proved after the calculation of the DQI. At the end of the experiment, it is concluded that the brewery waste alone is not suitable for composting. Although the development of the seedlings the composted substratum is not indicated for uses in substitution of the commercial substrate for the production of Parapiptadenia rigida (Brenth.) Brenan seedlings.