Principais Coleções do Repositório
Submissões Recentes
Diagnóstico da degradação de pastagens no município de Tangará da Serra Mato Grosso decorrente da produção de bovinos
(Universidade Federal de Lavras, 2025-07-28) Ramos, Gislaine Edicely da Costa; Gionbelli, Mateus Pies; Orientador; Nascimento, Karolina Batista; Meneses, Javier Andrés Moreno; dc.contributor.referee1; dc.contributor.referee2; dc.contributor.referee3; dc.contributor.referee4; dc.contributor.referee5
The study “Diagnosis of Pasture Degradation in the Municipality of Tangará da Serra – MT, Resulting from Cattle Production” focused on evaluating management practices in 40 rural properties, identifying the factors that contribute to pasture degradation. In this regard, practices such as the low frequency of soil analysis, absence of nitrogen fertilization, and the use of inadequate forage species intensify the degradation process. The study revealed relevant social, technological, economic, and cultural impacts, such as the limited adoption of technologies and the persistence of outdated management practices among family farmers. With a clear extension-oriented character, the project actively involved local producers through interviews, contributing to the construction of participatory solutions adapted to the local reality. The research covered the municipality of Tangará da Serra, encompassing small and medium-sized family farmers as the target audience, distributed among the largest rural communities. The 40 interviewed producers were directly benefited, as well as the Municipal Department of Agriculture and other stakeholders interested in the research, such as technicians and students. The impacts of the research fall within the thematic areas of the National Extension Policy — Environment, Technology and Production, and Labor — promoting sustainable practices, rational land use, and socioeconomic inclusion. Furthermore, the study is aligned with several of the 17 Sustainable Development Goals (SDGs) of the United Nations (UN), such as Zero Hunger and Sustainable Agriculture, Decent Work and Economic Growth, Industry, Innovation and Infrastructure, Responsible Consumption and Production, Climate Action, and Life on Land, reinforcing its potential to contribute to the sustainable transformation of livestock production in degraded pasture areas. Thus, the objectives pursued by this study highlight highly relevant elements that may contribute to the development of scientific research, the implementation of public policies, subsidized credit programs, and technical assistance actions, in addition to generating significant social and environmental results in the face of climate change.
Uso dos serviços de polinização e do controle biológico no manejo integrado de pragas e doenças como proposta de manejo sustentável da soja
(Universidade Federal de Lavras, 2025-09-03) Barateiro, João Vitor Ganem Rillo Paz; Carvalho, Stephan Malfitano; Toledo, Vagner de Alencar Arnaut de; Pereira, Heber Luiz; Souza, Jander Rodrigues de; Santos, Deodoro Magno Brighenti dos
Brazil is the world's largest producer and exporter of soybean (Glycine max (L.) Merrill), with an estimated production of 166 million tons, occupying approximately 47 million hectares. Although considered a self-pollinating species, several soybean cultivars show increased productivity when pollinated by bees. This study was conducted in two areas: the first located in the municipality of Piracicaba, São Paulo, at the Esalq-USP Experimental Station, and the second located in the municipality of Capão Bonito, São Paulo, on a private property, during the 2021/22, 2022/23, and 2023/24 harvests. The objective was to evaluate the impact of Apis mellifera bee visits to soybean flowers, providing supplemental pollination, and biological management with products from the Koppert Integrated System on soybean productivity. Four treatments were tested: a) pest control without bees (CONTROL); b) pest control plus bees (CONTROL+BEE); c) biological management plus bees (SIK+BEE); and d) biological management without bees (SIK), with six replicates, represented by transects drawn from a specific hive located on the crop border or from a specific point (in the case of the treatment without bees). In each of these transects, points were distributed according to the distance from the zero point, positioned at 12.5 m, 25 m, 50 m, 100 m, and 200 m. In the case of Capão Bonito, the first distance was 25 m, because it is a crop irrigated via a central pivot, where the entire experimental area was subject to irrigation. Each experimental plot consisted of eight soybean rows, 6 m long, totaling 120 plots in the first area (Piracicaba) and 96 plots in the second area (Capão Bonito). The cultivars sown were BRS 7380 RR and BrasMax Zeus 55I57RSF, respectively. During crop flowering, bee visitation was assessed in the experimental plots in each replicate. After harvesting the plots, the data were subjected to statistical analysis to evaluate the crop yield components in the four treatments. The results revealed that bee pollination significantly increased soybean productivity compared to treatments without bees. Furthermore, bee visitation also increased, highlighting the effectiveness of biological management and the positive impact of proximity to the hive.
Efeitos da incorporação de material de mudança de fase em resíduos de madeiras da Amazônia para armazenamento de energia térmica
(Universidade Federal de Lavras, 2025-09-22) Bertolucci, Ana Cláudia Teixeira; Ferreira, Saulo Rocha; Protásio, Thiago de Paula; Gloria, M’Hamed Yassin Rajiv da; Cureau, Roberta Jacoby; Grabois, Thiago Melo
The search for sustainable and energy-efficient solutions has driven the development of innovative materials for various sectors, including civil construction, urban design, thermal packaging, and energy storage systems. In this context, incorporating phase change materials (PCMs) into natural matrices, such as wood, emerges as a promising strategy for thermal control. PCMs act as latent heat reservoirs, absorbing and releasing energy during phase transitions, which allows for thermal stabilisation of different systems and environments. Wood, in turn, is a renewable resource with a porous structure conducive to impregnating PCMs, as well as having a low carbon footprint and potential for valorising forest residues. In this study, the physical-chemical, mechanical, and anatomical behaviour of wood species with different densities, porosities, and thermal conductivities was investigated after the incorporation of the organic PCM RUBITHERM® RT24 (phase transition temperature of 24°C), impregnated into the samples via a vacuum pump. Two Amazonian species derived from residues of sustainable forest management were used: Parkia spp. (Faveira) and Manilkara spp. (Maçaranduba), aiming to align thermal performance with the valorisation of forest by- products. The results showed that the species with the lower density (0.240 g/cm3), Parkia spp., exhibited a greater capacity to absorb PCM (over 70% of the sample mass), conferring high thermal inertia and delaying temperature variations during the phase transition. The interaction between wood and PCM enabled the development of functional composites with potential to reduce energy consumption in buildings, add value to forest residues, and expand the use of natural materials in thermal efficiency applications.
Projeto de vida: análise da produção de conhecimento científico
(Universidade Federal de Lavras, 2025-09-30) Gualberto, Rodrigo Vicente; Oliveira, Luiz Fernando de; Cruz, Sayonara Ribeiro Marcelino; Rezende, Michelli Godoi
This research, conducted as part of the Professional Master’s Program in Education at the Federal University of Lavras, aimed to investigate the scientific production surrounding the concept of life project, analyzing its relevance to the personal, academic, and social development of young people and its integration into educational practices. The justification for this study lies in the need to understand not only the concept itself but also the factors that facilitate its effective application in the school context, especially in light of recent educational transformations in Brazil. To achieve this, a bibliographic methodology was adopted, as proposed by Gil (2002), which involved reading, analyzing, and interpreting selected academic sources with a qualitative approach, aiming to interpret the phenomenon within its social and educational context. Data analysis and interpretation were conducted based on Bardin’s (1997) content analysis, allowing the identification of patterns, gaps, and relevant contributions to the theme. The findings indicated that the construction of life projects in educational contexts is multifaceted and involves complexities beyond academic performance, encompassing personal, social, and professional dimensions of youth. The conclusion emphasizes that life projects are essential for the holistic development of students, being crucial for promoting their well-being and long-term success. As a result of this investigative process, an educational product was developed aimed at students in the Pedagogy course, preparing them to address the concept of life project with their future students, fostering a more comprehensive development aligned with the unique characteristics of each learner.
Percurso interativo para a promoção da educação alimentar e nutricional em uma escola do campo no estado do Mato Grosso do Sul
(Universidade Federal de Lavras, 2025-08-28) Silva, Diane Olidia Timotheo da; Assis, Thiago Rodrigo de Paula; Vilas Boas, Lucas Guedes; Grando, Raquel Lopes Sinigaglia Caribé
This study aimed to promote Food and Nutritional Education (FNE) for the valorization of school meals through interdisciplinary and cross-cutting activities, based on the disciplines (geography, history, and science) that constitute the "Terra Vida e Trabalho" (Land, Life, and Work) curricular component, in a Rural School setting. It sought the construction of a University Extension Technical Project for execution alongside educators, students, and families of the José de Anchieta POLO Municipal School, at its "Sala Matão" extension, located in a rural settlement in the municipality of Bandeirantes - MS. The adopted methodology was participatory and qualitative. A diagnosis was carried out through interviews based on semi-structured questionnaires, which were applied to educators, parents/guardians, and students. The technical product was the planning and execution of the interactive pathway, contextualized with the local reality, school meals, and family farming in the region. Its construction considered the diagnostic data, the curricular components, their contents, and the principles of FNE. Consolidation occurred through the execution of the following actions: reflection on the act of eating well, field trips to family farming properties, recipe development, a lecture with a nutritionist, reading, writing, and production activities, and interaction with the family at the "feira verdinha" (small green market). The pedagogical activities promoted the valorization of school meals sourced from family farming, presented the origin of the foods, the importance of valuing local products, sustainable production, and the consumption of diversified and regional foods. The planned and executed actions, with participant interaction, align with the premises of FNE and allowed participants to reflect on healthy eating choices, encompassing sociocultural, biological, and environmental dimensions. The results indicated a positive impact of FNE on the participants' vision, suggesting continuity in this school extension and possibilities for implementing the pathway methodology in the school’s POLO unit.