https://repositorio.ufu.br/handle/123456789/18944 2026-04-15T12:21:44Z https://repositorio.ufu.br/handle/123456789/48483 Title: Potencial de azospirillum brasilense como condicionador de solo e promotor do crescimento do sorgo em campo Abstract: Increasing agricultural production is inevitable to meet the growing global demand for food. However, the combination of climate change and anthropogenic pressures poses a serious threat to food security. The adoption of conservation practices and efficient land management enhances resilience and sustains soil health and ecosystem services. Therefore, the use of microorganisms in the formulation of commercial inoculants offers integrative benefits capable of improving agricultural productivity while promoting the efficient use of chemical fertilizers, thus representing a sustainable strategy. This study aimed to evaluate the potential effects of applying an Azospirillum brasilense isolate on soil fertility, microbial and enzymatic activities, and crop productivity under field conditions. A literature review was conducted to summarize the mechanisms and effects of this bacterial species on plant production. In addition, two field experiments were carried out using an A. brasilense isolate applied to two Red Latosols (medium- and clay-textured soils) within the Brazilian Cerrado biome under sorghum cultivation. The experimental design consisted of randomized blocks in a 2 × 6 factorial arrangement, including two treatments: (i) A. brasilense CCT-7831 and (ii) a control (without microbial inoculation), with six replicates. Statistical analyses were performed using analysis of variance (ANOVA) followed by Scott–Knott’s test (p < 0.05). The evaluated parameters included rhizospheric soil fertility, microbial and biochemical activity assessed through soil microbial respiration (SMR), and the potential activities of arylsulfatase, β-glucosidase, acid phosphatase, fluorescein diacetate (FDA) hydrolysis, microbial biomass carbon (MBC), and the metabolic quotient (qCO₂). Inoculation with A. brasilense reduced sulfur (S) content in sorghum tissues grown in medium-textured soil. Conversely, A. brasilense application enhanced sorghum yield in clay-textured soil. The inoculant decreased soil phosphorus (P) content in clay soil but increased copper (Cu), iron (Fe), and zinc (Zn) levels in medium-textured soil. Application of A. brasilense reduced MBC in medium-textured soil and acid phosphatase activity in clay soil. Inoculation showed positive correlations with MBC, FDA activity, and soil concentrations of S, K, and Cu, while negative correlations were observed with arylsulfatase, β-glucosidase, acid phosphatase, and the contents of B, S, Cu, P, Mo, Fe, and Ca. Although changes in certain variables were detected following the application of A. brasilense, it is necessary to monitor the effects of selected strains used in inoculation and co-inoculation under different soil conditions and seasonal variations to support the sustainable development of environmentally sound management practices that minimize dependence on chemical fertilizers and pesticides. 2025-12-01T00:00:00Z https://repositorio.ufu.br/handle/123456789/48459 Title: Ações de sustentabilidade da Universidade Federal de Uberlândia na gestão de resíduos sólidos Abstract: Humanity has sought solutions to everyday problems through sustainable practices, but balancing economy, society, and the environment remains a challenge for citizens, companies, and public bodies alike. Public authorities, in particular, must implement actions that ensure the integration of socio-environmental issues into the decision-making process, especially in the development of public policies. Thus, the implementation and monitoring of sustainability actions are fundamental in companies and organizations across all sectors of society. From this perspective, this study presents, in chapters, literature reviews on topics such as reverse logistics, instruments for achieving sustainability, and solid waste, as well as an analysis of sustainability initiatives implemented at the Federal University of Uberlândia (UFU) and in the management of the main solid waste generated by the daily activities of professors, students, technicians, and outsourced staff. The aim was to identify opportunities for future implementations of reverse logistics programs, allowing the reintegration of this waste into the production process or its proper disposal, in order to outline the institution's current sustainable scenario. Several questions were raised: What types of waste are generated? How is this waste disposed of? Is the reuse of materials through selective collection a practice that has been adopted? The methodology was developed in four phases aiming to collect information, discuss related aspects, and organize results and perspectives for improvement and advancements in solid waste management. Regarding environmental education, considering the existence of environmental disciplines in courses offered by UFU (Federal University of Uberlândia), it was observed that 52.97% of undergraduate courses offer at least one discipline related to the environment. Actions should be promoted with constant campaigns to broaden the reach of socio-environmental awareness among students. There has been significant growth in environmental projects, programs, and events over the years. Concerning policies and higher education institutions, the organizational structures of sustainability in Minas Gerais federal universities reveal different approaches and implementation strategies. Of the 11 universities in Minas Gerais, 7 have a Sustainable Logistics Plan, and only 3 have adhered to the Environmental Agenda in Public Administration (A3P). Regarding waste management, UFU has achieved notable progress in reducing the consumption of materials such as paper, toner, and used cups. Between 2014 and 2022, paper consumption fell from 57,203.95 kg to 8,577 kg, and toner consumption decreased by up to 85%. Regarding selective waste collection, the institution, through partnerships with Associations of Waste Pickers and Recyclers in Uberlândia, ensures the proper disposal of dry waste such as paper, plastic, cardboard, PET bottles, scrap metal, and rejects. However, there is still no comprehensive system for waste such as used cooking oil, writing instruments, discarded small electrical appliances, and everyday items like dishwashing sponges, which already have reverse logistics systems in other institutions. Therefore, it was possible to diagnose the role of logistical plans and public policies at UFU (Federal University of Uberlândia) that promote the expansion of solid waste management actions, including reverse logistics, as already occurs individually in other federal universities. 2025-08-25T00:00:00Z https://repositorio.ufu.br/handle/123456789/48413 Title: Evolução e desafios da agricultura orgânica na mesorregião do Triângulo Mineiro e Alto Paranaíba (MG): uma análise de 2016 a 2025 Abstract: Agriculture is one of the oldest activities of humanity. Humanity has made excessive use of pesticides and other management considered unsustainable and harmful to the environment and human health. Thus, systems that include more sustainable forms of agriculture have been created as an alternative for production, such as agroecology, regenerative agriculture, agriculture without the use of pesticides and organic agriculture. It is important to make it possible for those who wish to consume organic products to be available. For an agricultural product to be considered organic in Brazil, it must go through a certification process and comply with legal criteria and guidelines from the Ministry of Agriculture, Livestock and Supply (MAPA). The Triângulo Mineiro and Alto Paranaíba (TMAP) mesoregion, in Minas Gerais (MG), is recognized for its strategic position and the leading role of Agribusiness in the Cerrado Mineiro. However, ecological sustainability initiatives or organic production initiatives need to be evidenced to encourage the transition to organic. This study aims to characterize the organic production initiatives in this mesoregion, in the period from 2016 to 2025, with data from records of the National Registry of Organic Producers (CNPO) of MAPA. Producers, enterprises, certifying entities, their type of certification, in addition to the agricultural scope, activity and products, were identified in the CNPO. It was concluded that, in the region, organic production acts to offer diversification of products and contribute to food security. There is a predominance of primary vegetable production, with a focus on olericulture, fruit growing and coffee, among others. There are also scopes for products of animal origin, animal and vegetable processing, as well as extractivism. In addition, it was observed that family farming is very important in the organic segment, its participation is effective through the Social Control Organizations (OCS), predominant certification in TMAP, with emphasis on OCS AMA & AFAGA, the entity with the highest number of registrations in the region. In addition, there is also the Participatory Conformity Assessment Body (OPAC) Brota Cerrado, demonstrating the great importance of certification by participatory system mechanisms. Certification by audit, absent only in the micro-region of Ituiutaba, focused on product processing, where IBD Certifications and ECOCERT were the certifiers with the most records. 2025-11-24T00:00:00Z https://repositorio.ufu.br/handle/123456789/48383 Title: Análise dos critérios de sustentabilidade em compras da administração pública municipal de Uberlândia no ano de 2024, com foco na aplicação da nova Lei de Licitações n° 14.133/2021 Abstract: Sustainable public procurement is a key strategy to promote economic, social, and environmental development through the acquisition of goods and services by government agencies. It encourages efficient resource use, reduces negative environmental impacts, and stimulates responsible market practices. Since 2024, Law No. 14.133/2021 has mandated adherence to sustainability guidelines in public procurement, marking an important milestone in public administration. This study aims to understand how sustainability criteria are being incorporated into the acquisition of products by the municipal government of Uberlândia, based on the principles and guidelines established by the new Public Procurement Law. The methodology includes bibliographic research and qualitative analysis of public procurement processes conducted in 2024, accessed through transparency portals. The findings are expected to help understand how the municipality is adhering to sustainable procurement practices and to support more effective public policies, guiding managers toward best practices and process improvement. The study ultimately seeks to strengthen the implementation of sustainability in the public sector, fostering a more efficient and environmentally responsible administration. However, it is observed that, in practice, procurement processes still address sustainability predominantly in a formal and normative manner, without necessarily leading to effective structural changes. 2025-12-15T00:00:00Z