https://repositorio.uema.br/jspui/handle/123456789/1880 2026-09-01T21:48:50Z https://repositorio.uema.br/jspui/handle/123456789/6564 Título: Qualidade, perdas e condições de comercialização de frutas e hortaliças na CEASA de São Luís Abstact: The commercialization of fruits and vegetables is a critical stage in the supply chain, especially in urban centers where the demand for fresh food is high. This study aimed to diagnose the commercialization conditions, losses, and hygienic-sanitary aspects of fruits and vegetables at the Supply Center of Maranhão (CEASA), in São Luís – MA. Twenty points of sale were evaluated through the application of questionnaires and interviews with vendors. The fruits with the highest losses were grapes (1035 kg/week), melon (473.5 kg), and papaya (345.3 kg), while among vegetables, potatoes (622 kg), carrots (405 kg), and onions (370 kg) stood out. Lettuce and parsley showed high loss rates and non-conformities in quality standards, especially in firmness, absence of damage, and dehydration. Only 37.5% of the stalls sold certified products, and 50% offered items with labeling and traceability. The hygienic-sanitary conditions were also concerning: 62.5% of the stalls had pest infestations, and only 7.5% had proper sanitary facilities. It is concluded that there are significant structural and operational deficiencies, requiring public and educational actions aimed at improving commercialization practices, food safety, and loss reduction. 2025-01-01T00:00:00Z https://repositorio.uema.br/jspui/handle/123456789/6563 Título: Qualidade de sementes florestais de diferentes árvores matrizes de Bixa arborea Huber (urucum do brejo) Abstact: Forest seeds have great social, economic, and ecological importance, as they are essential resources for species reproduction, contributing to the conservation and maintenance of ecosystem functional dynamics. Therefore, forest seeds used for seedling production and the recovery of degraded areas must originate from mother trees that exhibit superior visual and physiological traits compared to others. Thus, the objective of this study was to evaluate the physical, physiological, and sanitary quality of seeds from different mother trees of Bixa arborea Huber (swamp annatto). The experiments were conducted at the Tissue Culture Laboratory (LCT), Seed Laboratories (LSs), Plant Pathology and Plant Health Laboratory (LFF), Environmental Sciences and Biodiversity Laboratory (LCAB), and greenhouse facilities belonging to the Tissue Culture Laboratory (LCT) at the State University of Maranhão, São Luís – MA campus. The experimental design was completely randomized (CRD), with five different mother trees (Luzinete 1, Luzinete 2, Luzinete 3, Luzinete 4, and Maria Colíder) and four replicates, totaling 20 experimental units. Data were subjected to Tukey's test. Among the five mother trees analyzed, Luzinete 1 stood out in terms of physical quality, presenting higher moisture content. Regarding physiological quality, it showed superior shoot length, vigor index I and II, fresh and dry mass of normal seedlings, seedling emergence, emergence speed index, and stem diameter. For sanitary quality, Luzinete 1 had the lowest fungal incidence, with Aspergillus being the most frequently observed fungal genus. Overall, Luzinete 1 exhibited the best physiological performance and is therefore considered the most suitable for forestry purposes. 2025-07-07T00:00:00Z https://repositorio.uema.br/jspui/handle/123456789/6562 Título: Qualidade fisiológica de sementes de algodoeiro submetidas a tratamento com bioinsumo a base de Bacillus aryabhattai e arbolina. Abstact: The cotton plant crop presents high sensitivity to water deficit, which compromises its development and productivity. In this context, the present study had as objective to evaluate the effects of the cotton seed treatment with Bacillus aryabhattai and Arbolina on germination, emergence, rooting, development and productivity of the crop submitted to water stress. The experiment was conducted on a laboratory and a greenhouse, utilizing BRS 700 B3RF cultivar seeds. The experimental design adopted was completely randomized in a 2 × 4 × 2 factorial scheme, considering the presence or absence of Bacillus aryabhattai (Auras️) inoculation, four doses of Arbolina (0, 2, 4 e 8 mL kg⁻¹ of seed) and two water regimes (irrigated and deficit). The analyzed variables included germination and emergence rates, emergence The cotton plant crop presents high sensitivity to water deficit, which compromises its speed index, shoot and root systems dry mass, as well as the plant development under water stress conditions. The laboratory results indicated a significant effect of Auras (Bacillus aryabhattai) and Arbolina treatments on germination and root development, with the 4 ml kg⁻¹ Auras dose showing the highest germination percentage. The interaction between the factors significantly influenced the seedling emergence and the germination speed index. Complementary studies will be conducted to evaluate the impacts on the final crop productivity. 2025-01-01T00:00:00Z https://repositorio.uema.br/jspui/handle/123456789/6561 Título: O uso de drone na avaliação da distribuição longitudinal de plantas de milho (zea mays l) semeadas com uma semeadora tração humana Abstact: Precision agriculture has expanded with the use of technologies such as drones, enabling efficient crop monitoring. This study aimed to evaluate the performance of a human-powered seeder in the longitudinal distribution of maize (Zea mays L.) seeds using aerial images captured by a drone. The experiment was conducted under no-tillage conditions in Bom Lugar – Maranhão, Brazil. DJI Mini 3 drone flights were carried out at different phenological stages of the crop, generating orthomosaics and Digital Elevation Models (DEM) using Agisoft Metashape software. Planting failures were estimated through supervised classification in the SPRING software, allowing the identification of plantability gaps, stand uniformity issues, and operational deficiencies in the seeder. The results demonstrated that drone technology is effective for diagnostics and agronomic decision-making in small-scale farming systems, contributing to resource optimization and increased productivity. 2025-01-01T00:00:00Z