Teses e Dissertações

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    Compostagem de resíduos de polpas de frutas : compostagem, uso na produção de mudas e disseminação de conhecimentos
    (2022) Soares, Alessandra Cristina de Lima; Vasconcelos, Erika Socorro Alves Graciano de; Lima, André Suêldo Tavares de; Lima, André Suêldo Tavares de; Vasconcelos, Erika Socorro Alves Graciano de; Gomes, Tâmara Cláudia de Araújo; Barbosa, Tiago Jorge de Araujo
    The fruit pulp manufacturing process is a generator of organic waste, containing peels, seeds and bagasse. At the Cooperative of Small Organized Farmers (COOPEAGRO), located in the Municipality of Maragogi-AL, the pulp manufacturing process produces about 25 tons of this waste per month, which can be used to produce organic compounds. In this way, the objective of this work is to develop organic compounds from residues of fruit pulp agroindustry and evaluate them as substrate for the production of lettuce seedlings. The chemical characterization of the residues generated by the agroindustry was carried out for the purpose of sizing possible compost piles, such as the proportion of different residues to be mixed. The residues tested were pineapple, soursop, passion fruit, guava and acerola. To obtain the compounds, a hexagonal compost was used. After 120 days, the results showed that the monitored parameters followed what is indicated in the literature. The compounds were tested for the production of lettuce seedlings, evaluating seedling height, number of leaves, root length and dry mass of root area and root ball stability. The experimental design used was completely randomized, with 4 treatments (T1 = commercial compost; T2 = passion fruit and acerola; T3 = passion fruit and guava; T4 = passion fruit and soursop) and 5 replications. To represent the 16 experimental units, 8 trays of 128 cells were used, divided in half. The treatment of compost with residues of passion fruit and acerola, stood out from the others, presenting a higher average of the aerial part and root system. Chromatography of the passion fruit and acerola compound showed the best results. The technological products generated will be a patent of the organic compounds obtained, an article submitted to the Brazilian Journal of Agroecology and training at different levels.
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    Levantamento, identificação e mapeamento de estudos sobre nascentes localizadas no bioma caatinga: uma revisão sistemática de literatura
    (2022) Failla, Sara Carvalho; Calheiros, Altanys Silva; Cunha, Ana Catarina Monteiro Carvalho Mori da; Silva, José Pedro da; Barbosa, Tiago Jorge de Araújo
    The water crisis has grown into a chronic global problem, and the majority of the world's water-related ecosystems are suffering from pollution and degradation. The Caatinga biome is located in the Brazilian semi-arid region, which among the existing semi-arid regions is the most biodiverse and populous in the world. However, it has been one of the most threatened biomes in that country due to the various unsustainable human practices in the region. Therefore, the need for actions and studies dedicated to this ecosystem, which presents little scientific research, is notorious, especially regarding water courses and their sources, which, in addition to being scarce, are vulnerable to human activities and climate change. Mapping studies in the region dedicated to water issues and their recovery, are of paramount importance to stimulate well-timed and targeted actions aimed at reducing, reversing and avoiding environmental degradation, increasing food and water security. Given the above, the present study aimed to carry out a systematic literature review to map the springs located in the Caatinga biome and identify the impacts caused by human actions on their degradation. A literature review was conducted with research carried out on springs in the Caatinga. Searches were carried out using the main available databases, and the data found were mapped in order to highlight regions of low knowledge production. Initially, 1830 scientific papers were found with the search strings utilized, however, not a single scientific paper met all the established inclusion criteria and only 10 papers have partially met the selection criteria. The period of selected researches was from 2006 to 2021 and only five of the nine states that make up this biome have researches on this subject. It should be noted that the very low production made it impossible to carry out a more cohesive and complete systematic literature mapping, evidencing the great scarcity of studies and the importance of new scientific productions on this biome that is so important for the country.